Measurement & Control最新文献

Vibration errors compensation method based on self-feature registration for the 3-D dynamic measurement of metallic sealing ring forming surface 基于自特征配准的金属密封环成形面三维动态测量振动误差补偿方法

4区计算机科学

Measurement & Control Pub Date : 2023-10-31 DOI: 10.1177/00202940231203775

Hao-Nan Pei, Wen-Jing Zhou, Ming Luo

{"title":"Vibration errors compensation method based on self-feature registration for the 3-D dynamic measurement of metallic sealing ring forming surface","authors":"Hao-Nan Pei, Wen-Jing Zhou, Ming Luo","doi":"10.1177/00202940231203775","DOIUrl":"https://doi.org/10.1177/00202940231203775","url":null,"abstract":"The formed surface quality of metallic sealing ring of aero-engine affects the aircraft service performance directly. However, existing inspection methods, such as the final destructive inspection and the line laser scanner section profile measurement, only evaluate the formed quality from a 2-D view, that is, single or multiple radial formed section profiles. The lack of geometric information of 3-D surface is not conducive to the comprehensive monitoring of forming quality and process planning. Therefore, based on the line laser scanners, this paper mainly proposes a vibration errors compensation method based on self-feature registration. Aiming at the problem of rigid transformation of the measurement profile caused by random vibration during the rotary motion of metallic sealing ring, the feature of measurement profile in stationary scene (MPSS), that is, the medial axis, is used as the reference for the correct pose of measurement profile. The principle of finding the correct pose of measurement profile in rotary motion scene (MPRMS) is to minimize the distance between the medial axes. Next, based on the rotary motion information of metallic sealing ring and the geometric information of measurement system, a 3-D reconstruction matrix is built, so as to convert each measurement profile to the base coordinate system in turn, and finally a 3-D dynamic measurement method for the metallic sealing ring forming surface is built. The effectiveness of the proposed method is verified through simulation experiment and real measurement.","PeriodicalId":49849,"journal":{"name":"Measurement & Control","volume":"2011 15","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135813163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on imperfect condition-based maintenance strategy based on accelerated degradation process 基于加速退化过程的不完全状态维修策略研究

4区计算机科学

Measurement & Control Pub Date : 2023-10-29 DOI: 10.1177/00202940231207709

Jintao Chen, Lina Ren, Jianhua Li

{"title":"Research on imperfect condition-based maintenance strategy based on accelerated degradation process","authors":"Jintao Chen, Lina Ren, Jianhua Li","doi":"10.1177/00202940231207709","DOIUrl":"https://doi.org/10.1177/00202940231207709","url":null,"abstract":"To address the situation that the degraded system cannot be repaired as new and the degradation is accelerated after repair in engineering practice, an imperfect condition-based maintenance model is proposed based on the Gamma process by introducing the maintenance improvement factor and the accelerated degradation factor. The maintenance improvement factor describes the recovery degree of the degradation amount after imperfect maintenance, then gives a quantitative representation method of the system maintenance improvement effect and the determination method of the maximum number of imperfect maintenance. The accelerated degradation factor is combined with the geometric process to describe the accelerated degradation process of the system after imperfect maintenance. The Monte Carlo method is used to determine the optimal number of imperfect preventive maintenance decisions. Through the demonstration of calculation examples, the influence of accelerated degradation factor and maintenance improvement factor on the long-term operation maintenance rate and the optimal number of imperfect maintenance is analyzed. The results show that the model can more comprehensively describe the degradation and maintenance process of degraded systems, and it can effectively reduce maintenance cost ratio under long-term operation. It provides a certain theoretical support for formulating an economical and reasonable maintenance strategy that is more in line with the actual degradation and maintenance process in engineering practice.","PeriodicalId":49849,"journal":{"name":"Measurement & Control","volume":"40 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136135095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A robot path planning method using improved Harris Hawks optimization algorithm 一种基于改进Harris Hawks优化算法的机器人路径规划方法

4区计算机科学

Measurement & Control Pub Date : 2023-10-28 DOI: 10.1177/00202940231204424

Changyong Li, Qing Si, Jianan Zhao, Pengbo Qin

引用次数: 0

Super-twisting sliding mode finite time control of power-line inspection robot with external disturbances and input delays 具有外部干扰和输入延迟的电力线巡检机器人超扭转滑模有限时间控制

4区计算机科学

Measurement & Control Pub Date : 2023-10-28 DOI: 10.1177/00202940231199108

Yuhan Cao

{"title":"Super-twisting sliding mode finite time control of power-line inspection robot with external disturbances and input delays","authors":"Yuhan Cao","doi":"10.1177/00202940231199108","DOIUrl":"https://doi.org/10.1177/00202940231199108","url":null,"abstract":"An adaptive super-twisting sliding mode control (AST-SMC) is proposed for the power-line inspection (PLI) robot system with two degrees of freedom and single control input underactuated with multiple balances. Firstly, the nonlinear dynamic equation of PLI robot is established, and the model is linearized at the nominal equilibrium point. Secondly, a special transformation is introduced to transform the original input delay system into a delay-free model, and an equilibrium manifold linearization (EML) model is established by using scheduling variables to expand the operating range of the controlled system, as a result of which the disturbance observer control (DOC) is designed to estimate the external disturbance. Thirdly, in order to achieve fast convergence and continuous control, the super-twisting sliding mode control(ST-SMC) method is proposed to decrease chattering in the control law. Finally, it can be verified by Lyapunov stability theory that the system reaches the sliding mode surface in finite time and the trajectory tracking error converges to zero in finite time. The simulation results verify that the combination of DOC and AST-SMC has a optimal disturbance approximation and control convergence ability, clarifying the effectiveness and robustness of the proposed control scheme.","PeriodicalId":49849,"journal":{"name":"Measurement & Control","volume":"9 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136158789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on a novel fault diagnosis method for gearbox based on matrix distance feature 基于矩阵距离特征的齿轮箱故障诊断方法研究

4区计算机科学

Measurement & Control Pub Date : 2023-10-14 DOI: 10.1177/00202940231202531

Jiangcheng Li, Limin Dong, Xiaotao Zhang, Fulong Liu, Wei Chen, Zehao Wu

引用次数: 0

Design and simulation of small-sized antenna in microwave transmission method for water content measurement instrument 小型天线微波传输法含水量测量仪的设计与仿真

4区计算机科学

Measurement & Control Pub Date : 2023-10-14 DOI: 10.1177/00202940231199133

huiqin jia, dan-dan Wan, Jia-Cheng Zhou, Yi Wei

{"title":"Design and simulation of small-sized antenna in microwave transmission method for water content measurement instrument","authors":"huiqin jia, dan-dan Wan, Jia-Cheng Zhou, Yi Wei","doi":"10.1177/00202940231199133","DOIUrl":"https://doi.org/10.1177/00202940231199133","url":null,"abstract":"Herein, the microwave transmission method is proposed that demonstrates such advantages as non-invasiveness, excellent penetration performance, and fast detection. As a key component of the microwave method water content measurement instrument, the antenna is required to have a smaller radiation size than the inner diameter of the oil pipe. To address this technical challenge, a small-sized microwave projection method based on water content measurement antenna is designed in this study for the water content measurement of oil-water mixtures in downhole pipelines. Also, the half-cut antenna with a size of [Formula: see text] is proposed to operate in the frequency band of 2–6 GHz (The measured gain of the antenna varies from 2.48 dBi to 4.98 dBi). Then, the designed half-cut antenna is applied to the established water-content test environment for analysis as to the relationship between water content and the variation in transmission coefficient of the half-cut antenna. According to the test results, the relative water content error is about 0.31% between the simulation and measured results for the transmission coefficient [Formula: see text] in the range of 0%–30%, while that is about 0.16% for the transmission coefficient [Formula: see text] in the range of 40%–100%. The experimental results can be extended to the measurement of the part with high water content of the oil-water mixture in the pipeline, which provides a practical reference for field tests and basic research.","PeriodicalId":49849,"journal":{"name":"Measurement & Control","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135804031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptive and robust fractional gain based interpolatory cubature Kalman filter 自适应鲁棒分数增益插值培养卡尔曼滤波器

4区计算机科学

Measurement & Control Pub Date : 2023-10-14 DOI: 10.1177/00202940231200954

Jing Mu, Feng Tian, Jianlian Cheng

引用次数: 0

Obstacle avoidance USV in multi-static obstacle environments based on a deep reinforcement learning approach 基于深度强化学习方法的多静态障碍物环境下的USV避障

4区计算机科学

Measurement & Control Pub Date : 2023-10-12 DOI: 10.1177/00202940231195937

Dengyao Jiang, Mingzhe Yuan, Junfeng Xiong, Jinchao Xiao, Yong Duan

{"title":"Obstacle avoidance USV in multi-static obstacle environments based on a deep reinforcement learning approach","authors":"Dengyao Jiang, Mingzhe Yuan, Junfeng Xiong, Jinchao Xiao, Yong Duan","doi":"10.1177/00202940231195937","DOIUrl":"https://doi.org/10.1177/00202940231195937","url":null,"abstract":"Unmanned surface vehicles (USVs) are intelligent platforms for unmanned surface navigation based on artificial intelligence, motion control, environmental awareness, and other professional technologies. Obstacle avoidance is an important part of its autonomous navigation. Although the USV works in the water environment (e.g. monitoring and tracking, search and rescue scenarios), the dynamic and complex operating environment makes the traditional methods not suitable for solving the obstacle avoidance problem of the USV. In this paper, to address the issue of poor convergence of the Twin Delayed Deep Deterministic policy gradient (TD3) algorithm of Deep Reinforcement Learning (DRL) in an unstructured environment and wave current interference, random walk policy is proposed to deposit the pre-exploration policy of the algorithm into the experience pool to accelerate the convergence of the algorithm and thus achieve USV obstacle avoidance, which can achieve collision-free navigation from any start point to a given end point in a dynamic and complex environment without offline trajectory and track point generation. We design a pre-exploration policy for the environment and a virtual simulation environment for training and testing the algorithm and give the reward function and training method. The simulation results show that our proposed algorithm is more manageable to converge than the original algorithm and can perform better in complex environments in terms of obstacle avoidance behavior, reflecting the algorithm’s feasibility and effectiveness.","PeriodicalId":49849,"journal":{"name":"Measurement & Control","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135968924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A enhanced control strategy for capacitance voltage equalization in modular multilevel converter 模块化多电平变换器中电容电压均衡的改进控制策略

4区计算机科学

Measurement & Control Pub Date : 2023-10-11 DOI: 10.1177/00202940231191773

Chao Ding, Jinqi Zhang, Yanming Cheng, Mahmoud AM Al Shurafa, Yulian Zhao, Peilin Liu, Ilkyoo Lee

{"title":"A enhanced control strategy for capacitance voltage equalization in modular multilevel converter","authors":"Chao Ding, Jinqi Zhang, Yanming Cheng, Mahmoud AM Al Shurafa, Yulian Zhao, Peilin Liu, Ilkyoo Lee","doi":"10.1177/00202940231191773","DOIUrl":"https://doi.org/10.1177/00202940231191773","url":null,"abstract":"In searching for the optimal control strategy of sub-module capacitance voltage equalization of Modular Multilevel Converter (MMC), the most important issue is how to address the significant increase in computing time of the controller, switching frequency of the sub-module, device switching loss and MMC fault rate led by the increase in the number of sub-modules of the upper/lower bridge arm of the MMC. Therefore, this paper proposes a control strategy based on the retaining factor method + improved quick sort, namely, an improved quick sort algorithm is used to sort the sub-module capacitance voltages to reduce the amount of computation of the MMC controller; at the same time, a retaining factor is introduced to participate in the improved quick sort to significantly reduce the switching frequency of the sub-module. MMC of large ship grid-connected photovoltaic power system is taken as a research object in this paper, a 31-level MMC model is built in Matlab/Simulink. Simulation results verify that the improved quick sort has a good rapidity compared to the algorithms of bubble sort, quick sort, bidirectional bubble sort, and improved merge sort, that the retention factor method has a good frequency reduction effect, and that the proposed retention factor + improved quick sort can provide a good performance compared to improved quick sort and retention factor + improved merge sort under conditions of the normal operation and introducing disturbance.","PeriodicalId":49849,"journal":{"name":"Measurement & Control","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136097647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Leader-following cluster-delay consensus control for first-order nonlinear multi-agent systems based on event-triggered mechanism 基于事件触发机制的一阶非线性多智能体系统的leader -follow集群-delay共识控制

4区计算机科学

Measurement & Control Pub Date : 2023-10-11 DOI: 10.1177/00202940231203197

Yan Li, Kewen Li, Yongming Li

引用次数: 0