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Highly Accurate Attitude Estimation of Unmanned Aerial Vehicle Payloads Using Low-Cost MEMS. 基于低成本MEMS的无人机有效载荷高精度姿态估计。
IF 3 3区 工程技术
Micromachines Pub Date : 2025-05-27 DOI: 10.3390/mi16060632
Xuyang Zhou, Long Chen, Changhao Sun, Wei Jia, Naixin Yi, Wei Sun
{"title":"Highly Accurate Attitude Estimation of Unmanned Aerial Vehicle Payloads Using Low-Cost MEMS.","authors":"Xuyang Zhou, Long Chen, Changhao Sun, Wei Jia, Naixin Yi, Wei Sun","doi":"10.3390/mi16060632","DOIUrl":"10.3390/mi16060632","url":null,"abstract":"<p><p>Low-cost MEMS sensors are widely utilized in UAV platforms to address attitude estimation problems due to their compact size, low power consumption, and cost-effectiveness. Diverse UAV payloads pose new challenges for attitude estimation, such as magnetic interference environments and high dynamic environments. In this paper, we propose a hierarchical decoupled attitude estimation algorithm, termed HDAEA. Initially, a novel hierarchical decoupling approach is introduced for the attitude and angle representation of the direction cosine matrix, enabling the representation of angles in a new manner. This method reduces the data dimensionality and nonlinearity of observation equations. Furthermore, a magnetic interference identification algorithm is proposed to compute the magnetic interference intensity accurately and quantitatively. Combining the quantified errors of estimated state variables, an error model for magnetic interference and attitude angles in high-dynamic environments is constructed. Subsequently, the proposed error model is employed to calibrate the hierarchical decoupled angles using accelerometer and magnetometer measurements, effectively mitigating the impact of magnetic interference on the calculation of pitch angles and roll angles. Moreover, the integration of the proposed hierarchical decoupled attitude estimation algorithm with the error-state extended Kalman filter reduces system nonlinearity and minimizes linearization errors. Experimental results demonstrate that HDAEA exhibits significantly improved attitude estimation accuracy of UAV payloads.</p>","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"16 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12195543/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144506466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low Thermal Stress and Instant Efficient Atomization of Narrow Viscous Microfluid Film Using a Paper Strip Located at the Edge of a Surface Acoustic Wave Atomizer. 利用位于表面声波雾化器边缘的纸条实现窄粘性微流体膜的低热应力和即时高效雾化。
IF 3 3区 工程技术
Micromachines Pub Date : 2025-05-27 DOI: 10.3390/mi16060628
Yulin Lei, Yusong Li, Jia Ning, Yu Gu, Chenhui Gai, Qinghe Ma, Yizhan Ding, Benzheng Wang, Hong Hu
{"title":"Low Thermal Stress and Instant Efficient Atomization of Narrow Viscous Microfluid Film Using a Paper Strip Located at the Edge of a Surface Acoustic Wave Atomizer.","authors":"Yulin Lei, Yusong Li, Jia Ning, Yu Gu, Chenhui Gai, Qinghe Ma, Yizhan Ding, Benzheng Wang, Hong Hu","doi":"10.3390/mi16060628","DOIUrl":"10.3390/mi16060628","url":null,"abstract":"<p><p>A traditional SAW (surface acoustic wave) atomizer directly supplies liquid to the surface of the atomized chip through a paper strip located in the path of the acoustic beam, resulting in irregular distribution of the liquid film, which generates an aerosol with an uneven particle size distribution and poor directional controllability, and a high heating phenomenon that can easily break the chip in the atomization process. This paper presents a novel atomization method: a paper strip located at the edge of the atomizer (PSLEA), which forms a micron-sized narrow liquid film at the junction of the atomization chip edge and the paper strip under the effect of acoustic wetting. By using this method, physical separation of the atomized aerosol and jetting droplets can be achieved at the initial stage of atomizer startup, and an ideal aerosol plume with no jetting of large droplets, a uniform particle size distribution, a vertical and stable atomization direction, and good convergence of the aerosol beam can be quickly formed. Furthermore, the effects of the input power, and different paper strips and liquid supply methods on the atomization performance, as well as the heating generation capacity of the liquid in the atomization zone during the atomization process were explored through a large number of experiments, which highlighted the advantages of PSLEA atomization. The experiments demonstrated that the maximum atomization rate under the PSLEA atomization mode reached 2.6 mL/min initially, and the maximum thermal stress was 45% lower compared with that in the traditional mode. Additionally, a portable handheld atomizer with stable atomization performance and a median aerosol particle size of 3.95 μm was designed based on the proposed PSLEA atomization method, showing the great potential of SAW atomizers in treating respiratory diseases.</p>","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"16 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12194971/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144506484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Novel Variable Volume Capillary Microgripper for Micromanipulation in Aqueous Media. 一种用于水介质显微操作的新型可变体积毛细管微钳。
IF 3 3区 工程技术
Micromachines Pub Date : 2025-05-27 DOI: 10.3390/mi16060633
Enrique Mancha-Sánchez, Andrés J Serrano-Balbontín, Inés Tejado, Blas M Vinagre
{"title":"A Novel Variable Volume Capillary Microgripper for Micromanipulation in Aqueous Media.","authors":"Enrique Mancha-Sánchez, Andrés J Serrano-Balbontín, Inés Tejado, Blas M Vinagre","doi":"10.3390/mi16060633","DOIUrl":"10.3390/mi16060633","url":null,"abstract":"<p><p>This study presents a novel capillary microgripper for manipulating micrometer-sized objects directly within aqueous environments. The system features dynamic, vision-based feedback control of a non-volatile silicone oil droplet volume, enabling precise adjustment of the capillary bridge force for the adaptable capture of varying object sizes. This approach ensures extended working time and stable operation in water, mitigating the issues associated with evaporation common in other systems. COMSOL Multiphysics simulations analyzed capillary bridge formation. Experimental validation demonstrated successful different object shapes and sizes capture in an aqueous environment and further explored active release strategies necessary due to the non-volatile fluid, confirming the system potential for robust underwater micromanipulation.</p>","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"16 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12195430/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144506432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Pipette for High-Resolution Sampling and Delivery of pL Bio-Samples. 一种用于高分辨率采样和输送pL生物样品的移液器。
IF 3 3区 工程技术
Micromachines Pub Date : 2025-05-27 DOI: 10.3390/mi16060630
Ziyang Han, Pengfei Gong, Hengxiang Su, Zehang Gao, Shilun Feng, Jianlong Zhao
{"title":"A Pipette for High-Resolution Sampling and Delivery of pL Bio-Samples.","authors":"Ziyang Han, Pengfei Gong, Hengxiang Su, Zehang Gao, Shilun Feng, Jianlong Zhao","doi":"10.3390/mi16060630","DOIUrl":"10.3390/mi16060630","url":null,"abstract":"<p><p>Conventional laboratory methods for handling valuable biological samples typically use pipettes or needles, which are prone to issues such as dead volume and sample waste. Furthermore, the sampling and processing of pathogenic bacteria, such as <i>Escherichia coli</i> (<i>E. coli</i>) in environmental wastewater, require labor-intensive procedures with multiple complex steps. To overcome these limitations, we developed a pipette integrated with a microfluidic chip for bacteria sampling and delivery. This pipette can provide the negative pressure to microfluidic chips for sampling, the constant temperature unit for biological reaction, and programs for automatic control (suction, heating, liquid discharge, and cleaning) and display. The droplet chip employs a cross-channel structure to generate droplets and incorporates a designated droplet storage and detection area. Utilizing this innovative device, we have demonstrated the generation, transportation, and storage of pL droplets, as well as quantitatively detected <i>E. coli</i> samples across various concentrations. The test results have demonstrated the overall reliability and data consistency of the system. Overall, our device achieves the precise sampling of pL volumes, offering a simple yet promising solution for the sampling and delivery of bio-samples in remote settings.</p>","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"16 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12195456/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144506435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Artificial Intelligence QRS Detection Algorithm for Wearable Electrocardiogram Devices. 一种可穿戴式心电图设备的人工智能QRS检测算法。
IF 3 3区 工程技术
Micromachines Pub Date : 2025-05-27 DOI: 10.3390/mi16060631
Zihao Li, Wenliang Zhu, Yiheng Xu, Yunbo Guo, Junbo Li, Peng Song, Ying Liang, Binquan You, Lirong Wang
{"title":"An Artificial Intelligence QRS Detection Algorithm for Wearable Electrocardiogram Devices.","authors":"Zihao Li, Wenliang Zhu, Yiheng Xu, Yunbo Guo, Junbo Li, Peng Song, Ying Liang, Binquan You, Lirong Wang","doi":"10.3390/mi16060631","DOIUrl":"10.3390/mi16060631","url":null,"abstract":"<p><p>At the core of AI-driven electrocardiogram diagnosis lies the precise localization of the QRS complex. While QRS detection methods for multiple leads have been researched adequately in the last few decades, their multi-lead strategies still need to be designed manually. Therefore, a QRS detector that can fuse multiple leads automatically is still worth investigating.</p><p><strong>Methods: </strong>The proposed QRS detector comprises a leads-distillation module (LDM) and a QRS detection module. The LDM can distill multi-lead signals into single-lead ones. This procedure minimizes the weight proportions assigned to noisy leads, enabling the network to generate a novel signal that facilitates the recognition of QRS waves. The QRS detection module, utilizing U-Net, is capable of discerning QRS complexes from the novel signal.</p><p><strong>Results: </strong>Our method demonstrates outstanding performance with a parameter count of only 5216. It achieves an excellent F1 score of 99.83 on the MITBIHA database and 99.77 on the INCART database, specifically in the inter-patient pattern. In the cross-database pattern, our approach maintains a strong performance with an F1 score of 99.22 on the INCART database and an F1 score of 99.09 on the MITBIHA database.</p><p><strong>Conclusion: </strong>Our method provides a novel idea for universal multi-lead QRS detection. It possesses advantages, such as reduced computational parameters, enhanced precision, and heightened compatibility.</p><p><strong>Significance: </strong>Our method canceled the repeated deployment of the QRS detection function to different lead configurations in the electrocardiogram (ECG) diagnostic system. Moreover, the scaling operation may become a simple tool to decrease the computational load of the network.</p>","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"16 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12195197/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144506441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultra-Broadband Wearable Antenna with Thermal Sensitivity Based on Surface-Modified TiO2-PTFE-PDMS Nanocomposites. 基于表面改性TiO2-PTFE-PDMS纳米复合材料的热敏超宽带可穿戴天线。
IF 3 3区 工程技术
Micromachines Pub Date : 2025-05-27 DOI: 10.3390/mi16060629
Baoli Mi, Qingya Meng, Junping Duan, Bowen Su, Ma Jian, Yangyi Shi, Binzhen Zhang
{"title":"Ultra-Broadband Wearable Antenna with Thermal Sensitivity Based on Surface-Modified TiO<sub>2</sub>-PTFE-PDMS Nanocomposites.","authors":"Baoli Mi, Qingya Meng, Junping Duan, Bowen Su, Ma Jian, Yangyi Shi, Binzhen Zhang","doi":"10.3390/mi16060629","DOIUrl":"10.3390/mi16060629","url":null,"abstract":"<p><p>In this study, a composite substrate with adjustable dielectric properties was prepared, and its promising application in wearable medical device antennas was demonstrated. 3-Methacryloxypropyltrimethoxysilane (KH570) was used to modify titanium dioxide (TiO<sub>2</sub>) nano-powder, and the modified powder was blended with a mixture of polydimethylsiloxane (PDMS) and polytetrafluoroethylene (PTFE) under the action of anhydrous ethanol. The resulting polymer material had the advantages of hydrophobicity, softness, low loss, and a high dielectric constant. Meanwhile, the effects of the KH570 mass fraction on the microstructure and dielectric properties of TiO<sub>2</sub>-PTFE-PDMS composites were investigated, and the results showed that when the mass fraction was 5%, the composites exhibited better dielectric properties in the range of 2-12 GHz. Finally, an ultra-wideband antenna with an operating frequency band in the range of 2.37-11.66 GHz was prepared based on this composite substrate. The antenna demonstrated significant potential for future applications in detecting environmental thermal changes due to its special temperature-sensitive linear frequency shift characteristics, and its effect on the human body under bending conditions was studied. In addition, specific absorption rate (SAR) measurements were performed to assess the effects of antenna radiation on the human body in practical applications.</p>","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"16 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12195483/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144506542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental Study on Surface Polishing of SLM-316L Stainless Steel via Laser Treatment and Mechanical Grinding. SLM-316L不锈钢表面激光抛光与机械磨削的实验研究。
IF 3 3区 工程技术
Micromachines Pub Date : 2025-05-27 DOI: 10.3390/mi16060634
Wei Fang, Qiuling Wen, Jiaxin Hu, Feng Jiang, Zhongwei Hu, Xian Wu, Jinlin Yang, Xiaoguang Wang
{"title":"Experimental Study on Surface Polishing of SLM-316L Stainless Steel via Laser Treatment and Mechanical Grinding.","authors":"Wei Fang, Qiuling Wen, Jiaxin Hu, Feng Jiang, Zhongwei Hu, Xian Wu, Jinlin Yang, Xiaoguang Wang","doi":"10.3390/mi16060634","DOIUrl":"10.3390/mi16060634","url":null,"abstract":"<p><p>The 316L stainless steel material boasts exceptional corrosion resistance and plasticity, among other benefits, and finds extensive application in automotive components, molds, aerospace parts, biomedical equipment, and more. This work focuses on the surface polishing of selective laser melting (SLM) 316L stainless steel using 1064 nm nanosecond laser processing and mechanical grinding. The influence of laser processing parameters on the surface roughness of SLM-316L stainless steel was investigated using an orthogonal experiment. After laser processing, the surface roughness of SLM-316L stainless steel was reduced from 7.912 μm to 1.936 μm, but many randomly distributed irregular micro-cracks appeared on the surface. EDS and XRD detections illustrated that iron oxides were generated on the surface of SLM-316L stainless steel after laser processing. Mechanical grinding was further performed to achieve a nanometer surface finish and remove the metal oxides and micro-cracks generated on the surface of SLM-316L stainless steel after laser processing. The AFM measurement results indicate that the surface roughness of SLM-316L stainless steel was reduced to approximately 3 nm after mechanical grinding. Moreover, the micro-cracks and iron oxides on the surface of laser-processed SLM-316L stainless steel were completely removed. This work provides guidance for the precision polishing of SLM-316L stainless steel.</p>","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"16 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12194992/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144506456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Path-Driven Fluid Routing and Scheduling Method for Continuous-Flow Microfluidic Biochips with Delay Time Optimization. 基于延迟时间优化的连续流微流控生物芯片路径驱动流体路径与调度方法。
IF 3 3区 工程技术
Micromachines Pub Date : 2025-05-26 DOI: 10.3390/mi16060625
Zhisheng Chen, Bowen Liu, Hongjin Su, Zhen Chen, Genggeng Liu, Xing Huang
{"title":"A Path-Driven Fluid Routing and Scheduling Method for Continuous-Flow Microfluidic Biochips with Delay Time Optimization.","authors":"Zhisheng Chen, Bowen Liu, Hongjin Su, Zhen Chen, Genggeng Liu, Xing Huang","doi":"10.3390/mi16060625","DOIUrl":"10.3390/mi16060625","url":null,"abstract":"<p><p>Routing and application mapping are critical stages in the design of continuous-flow microfluidic biochips (CFMBs). The routing stage determines the channel network connecting components and ports, while application mapping schedules fluid transportation and wash operations based on the designed biochip architecture. Existing methods typically handle these stages separately: routing focuses solely on physical metrics without considering subsequent scheduling requirements, while application mapping adopts one-shot scheduling strategies that can lead to suboptimal solutions. This paper proposes an integrated path-driven methodology that jointly optimizes routing and application mapping. For routing, we develop a hybrid particle swarm optimization algorithm that incorporates conflict awareness and channel utilization strategies. For application mapping, we introduce an iterative approach that leverages historical scheduling information to progressively optimize fluidic-handling and wash operations. Experimental results on both real and synthetic benchmarks demonstrate significant improvements over state-of-the-art methods, achieving reductions of 22.05% in total channel length, 21.79% in intersections, 21.97% in total delay time, and 8.30% in biochemical reaction completion time. The proposed methodology provides an effective solution for the automated design of CFMBs with enhanced physical and operational efficiency.</p>","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"16 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12195421/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144506433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring the Inherent Variability of Economically Fabricated ZnO Devices Towards Physical Unclonable Functions for Secure Authentication. 探索经济制造ZnO器件对安全认证物理不可克隆功能的内在变异性。
IF 3 3区 工程技术
Micromachines Pub Date : 2025-05-26 DOI: 10.3390/mi16060627
Savvas Ermeidis, Dimitrios Tassis, George P Papageorgiou, Stavros G Stavrinides, Eleni Makarona
{"title":"Exploring the Inherent Variability of Economically Fabricated ZnO Devices Towards Physical Unclonable Functions for Secure Authentication.","authors":"Savvas Ermeidis, Dimitrios Tassis, George P Papageorgiou, Stavros G Stavrinides, Eleni Makarona","doi":"10.3390/mi16060627","DOIUrl":"10.3390/mi16060627","url":null,"abstract":"<p><p>Meeting the rising need for secure authentication in IoT and Industry 4.0, this work presents chemically synthesized ZnO nanostructured homojunctions as powerful and scalable physical unclonable functions (PUFs). By leveraging intrinsic variability from Li doping and the stochastic hydrothermal growth process, we systematically identified electrical parameters offering outstanding variability, stability, and reproducibility. ZnO devices outperform commercial diodes by delivering richer parameter diversity, lower costs, and superior environmental sustainability. Pushing beyond traditional approaches, we introduce multi-level quantization for boosted accuracy and entropy, demonstrate the normal distribution of challenge candidate parameters to support a novel method under development, and extract multiple parameters (8-10) per device instead of relying on a single-bit output. Parameter optimization and selection are performed upfront through a rigorous assessment of variability and inter-correlation, maximizing uniqueness and reliability. Thanks to their strong scalability and eco-friendliness, ZnO-based homojunctions emerge as a dynamic, future-proof platform for building low-cost, high-security, and sustainable digital identity systems.</p>","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"16 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12195217/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144506459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modified Hammerstein-Like Hysteresis Modeling and Composite Control Methods for Fast Steering Mirrors. 快速转向镜的改进Hammerstein-Like滞回建模及复合控制方法。
IF 3 3区 工程技术
Micromachines Pub Date : 2025-05-26 DOI: 10.3390/mi16060626
Kairui Cao, Zekun Li, Guanglu Hao, Rui Li, Jie Zhang, Jing Ma
{"title":"Modified Hammerstein-Like Hysteresis Modeling and Composite Control Methods for Fast Steering Mirrors.","authors":"Kairui Cao, Zekun Li, Guanglu Hao, Rui Li, Jie Zhang, Jing Ma","doi":"10.3390/mi16060626","DOIUrl":"10.3390/mi16060626","url":null,"abstract":"<p><p>Fast steering mirrors (FSMs), actuated by piezoelectric ceramics, play pivotal roles in satellite laser communication, distinguished by their high bandwidth and fast responsiveness, thereby facilitating the precise pointing and robust tracking of laser beams. However, the dynamic performance of FSMs is notably impaired by the hysteresis nonlinearity inherent in piezoelectric ceramics. Under dynamic conditions, rate-dependent hysteresis models and Hammerstein models are predominantly employed to characterize hysteresis nonlinearity. By combining the advantages of these two models, a hysteresis model termed modified Hammerstein-like (MHL) model is proposed. This model integrates an input time delay, a rate-dependent hysteresis term, and a linear dynamic term in a cascaded structure, effectively capturing the dynamic characteristics of hysteresis systems across a broad frequency range. Additionally, a composite control strategy is tailored for the MHL model which consists of a feedforward compensator based on a rate-dependent hysteresis inverse model and a proportional-integral (PI) controller for closed-loop regulation. Experimental results demonstrate the effectiveness of the proposed modeling and composite control methods.</p>","PeriodicalId":18508,"journal":{"name":"Micromachines","volume":"16 6","pages":""},"PeriodicalIF":3.0,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12194891/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144506490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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