Actuators最新文献_第6页

Comparison of Magnetostrictive-Actuated Semi-Active Control Methods Based on Synchronized Switching 基于同步开关的磁致伸缩半主动控制方法比较

IF 2.6 3区工程技术

Actuators Pub Date : 2024-04-12 DOI: 10.3390/act13040143

An Li, Y. Kobayashi, Y. Hara, Keisuke Otsuka, Kanjuro Makihara

引用次数: 0

State Observer-Based Conditioned Reverse-Path Method for Nonlinear System Identification 基于状态观测器的非线性系统识别条件反向路径法

IF 2.6 3区工程技术

Actuators Pub Date : 2024-04-11 DOI: 10.3390/act13040142

A. Oveisi, Umaaran Gogilan, J. Keighobadi, Tamara Nestorović

{"title":"State Observer-Based Conditioned Reverse-Path Method for Nonlinear System Identification","authors":"A. Oveisi, Umaaran Gogilan, J. Keighobadi, Tamara Nestorović","doi":"10.3390/act13040142","DOIUrl":"https://doi.org/10.3390/act13040142","url":null,"abstract":"In light of the complex behavior of vibrating structures, their reliable modeling plays a crucial role in the analysis and system design for vibration control. In this paper, the reverse-path (RP) method is revisited, further developed, and applied to modeling a nonlinear system, particularly with respect to the identification of the frequency response function for a nominal underlying linear system and the determination of the structural nonlinearities. The present approach aims to overcome the requirement for measuring all nonlinear system states all the time during operation. Especially in large-scale systems, this might be a tedious task and often practically infeasible since it would require having individual sensors assigned for each state involved in the design process. In addition, the proper placement and simultaneous operation of a large number of transducers would represent further difficulty. To overcome those issues, we have proposed state estimation in light of the observability criteria, which significantly reduces the number of required sensor elements. To this end, relying on the optimal sensor placement problem, the state estimation process reduces to the solution of Kalman filtering. On this ground, the problem of nonlinear system identification for large-scale systems can be addressed using the observer-based conditioned RP method (OBCRP) proposed in this paper. In contrast to the classical RP method, the current one can potentially handle local and distributed nonlinearities. Moreover, in addition to the state estimation and in comparison to the orthogonal RP method, a new frequency-dependent weighting is introduced in this paper, which results in superior nonlinear system identification performances. Implementation of the method is demonstrated on a multi-degree-of-freedom discretized lumped mass system, representing a substitute model of a physical counterpart used for the identification of the model parameters.","PeriodicalId":48584,"journal":{"name":"Actuators","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140712606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel Extension Control Instrument for Power Wheelchair Based on Kalman Filter Head Motion Detection 基于卡尔曼滤波头部运动检测的新型电动轮椅伸展控制仪器

IF 2.6 3区工程技术

Actuators Pub Date : 2024-04-11 DOI: 10.3390/act13040141

Yixin Zhang, Zhuohang Ying, Xinyu Tian, Siyuan Jin, Junjie Huang, Yinan Miao

{"title":"Novel Extension Control Instrument for Power Wheelchair Based on Kalman Filter Head Motion Detection","authors":"Yixin Zhang, Zhuohang Ying, Xinyu Tian, Siyuan Jin, Junjie Huang, Yinan Miao","doi":"10.3390/act13040141","DOIUrl":"https://doi.org/10.3390/act13040141","url":null,"abstract":"People with upper limb disabilities or high quadriplegia have extremely high requirements for the maneuverability and functionality of power wheelchairs. Normal wheelchairs cannot meet travel tasks, while smart customized wheelchairs are expensive and cannot be popularized. Therefore, a novel extension control instrument for power wheelchairs with low cost, strong scalability, and convenient usage is proposed, which can realize the control of the wheelchair by sensing a change of head posture. The device is divided into a head motion sensing unit (HMSU) and a wheelchair assistance control unit (WACU). The mapping relationship between the head attitude and the subject’s motion intention is established. The inertial measurement module in the HMSU collects the head attitude data and uses the Kalman filtering method to obtain the accurate Euler angle. The WACU is fixed on the original controller of the wheelchair. The joystick is inserted into the extended control mechanism and controlled, instead of the hand, through a 2-degree-of-freedom servo system combined with the pinion and rack push rod structure, thus controlling the movement of the wheelchair. In proceeding, the system can also detect the distance of objects in the environment in real time through the three-direction (front, left, right) ultrasonic ranging sensors installed on the WACU, with a certain obstacle avoidance function. The prototype experiments prove that the extension control instrument developed in this paper based on the Kalman filter can quickly and accurately identify head motion and accurately control the movement of the wheelchair. It is easy to operate and has strong universality, which presents a new low-cost solution for the travel of patients with disabilities.","PeriodicalId":48584,"journal":{"name":"Actuators","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140713874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intelligent Reduced-Dimensional Scheme of Model Predictive Control for Aero-Engines 航空发动机模型预测控制的智能降维方案

IF 2.6 3区工程技术

Actuators Pub Date : 2024-04-10 DOI: 10.3390/act13040140

Z. Jiang, Xi Wang, Jiashuai Liu, Nannan Gu, Wei Liu

{"title":"Intelligent Reduced-Dimensional Scheme of Model Predictive Control for Aero-Engines","authors":"Z. Jiang, Xi Wang, Jiashuai Liu, Nannan Gu, Wei Liu","doi":"10.3390/act13040140","DOIUrl":"https://doi.org/10.3390/act13040140","url":null,"abstract":"Model Predictive Control (MPC) has many advantages in controlling an aero-engine, such as handling actuator constraints, but the computational burden greatly obstructs its application. The current multiplex MPC can reduce computational complexity, but it will significantly decrease the control performance. To guarantee real-time performance and good control performance simultaneously, an intelligent reduced-dimensional scheme of MPC is proposed. The scheme includes a control variable selection algorithm and a control sequence coordination strategy. A constrained optimization problem with low computational complexity is first constructed by using only one control variable to define a reduced-dimensional control sequence. Therein, the control variable selection algorithm provides an intelligent mode to determine the control variable that has the best control effect at the current sampling instant. Furthermore, a coordination strategy is adopted in the reduced-dimensional control sequence to consider the interaction of control variables at different predicting instants. Finally, an intelligent reduced-dimensional MPC controller is designed and implemented on an aero-engine. Simulation results demonstrate the effectiveness of the intelligent reduced-dimensional scheme. Compared with the multiplex MPC, the intelligent reduced-dimensional MPC controller enhances the control quality significantly by 34.06%; compared with the standard MPC, the average time consumption is decreased by 64.72%.","PeriodicalId":48584,"journal":{"name":"Actuators","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140716475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Novel DC Electroosmotic Micromixer Based on Helical Vortices 基于螺旋涡流的新型直流电渗透微搅拌器

IF 2.6 3区工程技术

Actuators Pub Date : 2024-04-09 DOI: 10.3390/act13040139

Sri Manikandan Saravanakumar, Mohsen Jamshidi Seresht, Ricardo Izquierdo, Paul-Vahé Cicek

引用次数: 0

Adaptive Quick Sliding Mode Reaching Law and Disturbance Observer for Robust PMSM Control Systems 用于鲁棒 PMSM 控制系统的自适应快速滑模到达律和扰动观测器

IF 2.6 3区工程技术

Actuators Pub Date : 2024-04-08 DOI: 10.3390/act13040136

Hyeongki Ahn, Sangkyeum Kim, Jihoon Park, Yoonuh Chung, Mingyuan Hu, Kwanho You

{"title":"Adaptive Quick Sliding Mode Reaching Law and Disturbance Observer for Robust PMSM Control Systems","authors":"Hyeongki Ahn, Sangkyeum Kim, Jihoon Park, Yoonuh Chung, Mingyuan Hu, Kwanho You","doi":"10.3390/act13040136","DOIUrl":"https://doi.org/10.3390/act13040136","url":null,"abstract":"The permanent magnet synchronous motor (PMSM) has been of interest to eco-friendly industries on account of its advantages such as high performance, efficiency, and precision control. However, perturbations due to PMSM parameter uncertainty, load torque, and external disturbance interfere with the construction of PMSM precision control systems. Therefore, a robust control system is needed to avoid unnecessary system movement caused by perturbations. In this paper, sliding mode control (SMC) is adopted to implement a robust control system for the PMSM. In order to reduce the reaching time from the initial system state to the sliding surface and the chattering phenomenon that can cause the system to malfunction, the adaptive quick sliding mode reaching law based on an exponential function and power equation is proposed. Although the SMC is robust to disturbance and parameter uncertainty, unexpected disturbances can destabilize the system. To estimate the unmatched disturbance in a short time, the second-order fast terminal sliding mode observer (SFTSMO) is proposed. The results show that the motor control system based on the proposed method has a fast convergence speed to an objective value, position tracking performance, and robustness.","PeriodicalId":48584,"journal":{"name":"Actuators","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140730480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lateral Stability Control for Intelligent Commercial Vehicle Based on Reconstructed Objective Function Method 基于目标函数重构法的智能商用车辆侧向稳定性控制

IF 2.6 3区工程技术

Actuators Pub Date : 2024-04-08 DOI: 10.3390/act13040134

Yafei Li, Yiyong Yang, Xiangyu Wang, Chengbiao Wang

{"title":"Lateral Stability Control for Intelligent Commercial Vehicle Based on Reconstructed Objective Function Method","authors":"Yafei Li, Yiyong Yang, Xiangyu Wang, Chengbiao Wang","doi":"10.3390/act13040134","DOIUrl":"https://doi.org/10.3390/act13040134","url":null,"abstract":"In this paper, a novel electric-hydraulic power steering (EHPS) system and a vehicle stability coordination control algorithm are proposed which can not only ensure the accuracy of the trajectory tracking but also solve the coordination control problem between the stability of the lateral control and the stability of the roll in the extreme condition. Firstly, the EHPS system is designed to provide accurate control input of front wheel angle for vehicle lateral dynamics control. Secondly, on the basis of optimal preview theory, a new trajectory tracking fusion controller combined with sliding mode control is proposed to improve the accuracy and stability of the system in the process of vehicle lateral trajectory tracking control. Then, the stability domain boundary function of the phase plane is determined according to the phase plane of the sideslip angle-yaw rate, and the stability margin of the phase plane is calculated during the steering process. Finally, considering the tracking accuracy, lateral stability and roll stability performance in the process of trajectory tracking, the linear weighted algorithm is used to coordinate above three objectives, and the HIL bench test and real vehicle experiment verify that the proposed algorithm has good reliability and effectiveness.","PeriodicalId":48584,"journal":{"name":"Actuators","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140730237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Improved Zero-Flowrate Switching Control Method to Reduce Switching Losses in a Hydraulic Actuator 减少液压推杆开关损耗的改进型零流量开关控制方法

IF 2.6 3区工程技术

Actuators Pub Date : 2024-04-08 DOI: 10.3390/act13040137

Shuang Peng, Fanglong Yin, Yong Hu

{"title":"An Improved Zero-Flowrate Switching Control Method to Reduce Switching Losses in a Hydraulic Actuator","authors":"Shuang Peng, Fanglong Yin, Yong Hu","doi":"10.3390/act13040137","DOIUrl":"https://doi.org/10.3390/act13040137","url":null,"abstract":"Hydraulic switching actuators are high-efficiency, fast response, and low-cost solutions for hydraulic control systems. One of the challenging problems is throttling losses during valve transitions. Previously, the authors proposed a zero-flowrate switching method to reduce the throttling energy loss of the switching valve, where a hydraulic resonator is applied to make the flowrates through the lines approaching zero before the valves are switched off. The major challenge of this approach is fast switching valves whose transition times are less than 2 ms. In this paper, an improved zero-flowrate switching method is presented. It utilizes the capacity with independent inlet/outlet ports to regulate flowrates through the lines. Models of capacity applied in a simple line with different pressure signals are developed to explore characteristics of the capacity, based on which a complete actuation system is developed. In the complete model, resistance and inductance are optimized to achieve the desired flowrate response. The improved zero-flowrate switching method reduces throttling energy losses by 99.945% compared to a hard switching system. The simulation results demonstrated that the improved zero-flowrate switching method performs as expected in the design condition. A capacity with proper volume is able to regulate flowrates through all the lines to zero, with the help of appropriate resistance and inductance. Compared to the previous zero-flowrate switching method, the novel strategy allows slower switching valves applied in hydraulic actuation systems and achieves better efficiency performance. This research paves a new avenue for reducing throttling energy losses and improves system efficiency in hydraulic switching actuators, as well as most of the hydraulic switch-mode circuits.","PeriodicalId":48584,"journal":{"name":"Actuators","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140732402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Augmented Kalman Estimator and Equivalent Replacement Based Taylor Series-LQG Control for a Magnetorheological Semi-Active Suspension 基于增强卡尔曼估计器和等效替换的泰勒级数-LQG 控制的磁流变半主动悬挂系统

IF 2.6 3区工程技术

Actuators Pub Date : 2024-04-08 DOI: 10.3390/act13040138

Juncheng Wang, Mingyao Zhou, Jiacheng Tong, Jinyu Liu, Shian Chen

{"title":"Augmented Kalman Estimator and Equivalent Replacement Based Taylor Series-LQG Control for a Magnetorheological Semi-Active Suspension","authors":"Juncheng Wang, Mingyao Zhou, Jiacheng Tong, Jinyu Liu, Shian Chen","doi":"10.3390/act13040138","DOIUrl":"https://doi.org/10.3390/act13040138","url":null,"abstract":"This research presents an augmented Kalman estimator and an equivalent replacement-based Taylor series (ERBTS)-linear quadratic Gaussian (LQG) control strategy to cope with the control accuracy and response delay of magnetorheological (MR) dampers for vehicle semi-active suspensions. The parameters in the MR model are identified from experimental measurements. Then, two main sources of control error, namely, modelling error and real-time variety of the MR damper output force, are defined as an integrated compound real-time variety. Subsequently, they are written into a differential equation with characteristics of the minimum system to augment the state equation of the semi-active suspension system. The augmented Kalman estimator is constructed to estimate the abovementioned compound real-time variety. To calculate an acceptable time-delay compensation predictive control force, an equivalent operation is implemented beforehand in the suspension comprehensive performance index by replacing a part of the squared time-delay control force with the corresponding predictive control force. Simulation results verify the effectiveness of the proposed augmented Kalman estimator, and the newly developed ERBTS-LQG controller almost achieves control effectiveness of the ideal time delay free semi-active suspension.","PeriodicalId":48584,"journal":{"name":"Actuators","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140731714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Wear Prediction Framework for Ball-Screw of Electro-Mechanical Brake Unit on Railway Trains 铁路列车机电制动装置滚珠丝杠磨损预测框架

IF 2.6 3区工程技术

Actuators Pub Date : 2024-04-08 DOI: 10.3390/act13040135

Tianhe Ma, Jingjing Weng, Chun Tian, Mengling Wu

{"title":"A Wear Prediction Framework for Ball-Screw of Electro-Mechanical Brake Unit on Railway Trains","authors":"Tianhe Ma, Jingjing Weng, Chun Tian, Mengling Wu","doi":"10.3390/act13040135","DOIUrl":"https://doi.org/10.3390/act13040135","url":null,"abstract":"The electro-mechanical brake is a new advancement in railway train braking. Ball-screws are important components of electro-mechanical braking units (EMBUs), and their wear can cause EMBUs to degrade in performance or even fail to function. In this paper, we present a framework for prediction of ball-screw wear with discrete operating conditions as inputs, taking into account the time-varying characteristics of EMBUs. The framework includes determining the contact type, analyzing relative motion, calculating contact deformations, and estimating wear. The contact type is determined based on the quasi-static approach of Hertz theory. A dynamics model using multiple coordinate systems is established to analyze how balls and raceways move in relation to each other. The contact deformations of the ball–raceway contact are determined using numerical calculation. Then, the wear depth increment is calculated using the Archard model. The results of the calculation and the endurance test indicate that the wear on the screw raceway is greater than that on the nut raceway. The effect of velocity is greater than the effect of axial force. The presented calculation framework is reasonable and can be used for predicting EMBU ball-screw wear.","PeriodicalId":48584,"journal":{"name":"Actuators","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140728768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0