| 基于参数辨识的电动舵机系统健康仿真和评估 |
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| 引用本文： | 周维正,李学锋,曾庆华.基于参数辨识的电动舵机系统健康仿真和评估[J].国防科技大学学报,2016,38(4):132-136. |
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| 作者姓名： | 周维正 李学锋 曾庆华 |
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| 作者单位： | 北京航天自动控制研究所,北京航天自动控制研究所,国防科技大学航天科学与工程学院 |
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| 基金项目： | 国家自然科学基金(批准号：61174120) |
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| 摘 要： | 针对目前电动舵机系统故障诊断方法不能有效预测缓变故障,提出基于舵机系统模型的状态变量检测法对飞行器常用的执行机构电动舵机系统进行健康分析与仿真评估。分析电动舵机系统子系统电机本体、控制器、传动机构的常见故障,对其中反映系统性能的关键参数进行数学建模;通过对系统注入不同的健康参数得到相关故障状态下的状态变量特征,进而作为定位故障源的知识库,引入健康因子评估故障参数的变化趋势;仿真算例选择电机本体的主要物理参数电机绕组阻值和反映永磁体性能的电机力矩常数作为健康因子,通过定位知识库建立的健康因子评估算法验证了方法的可行性。
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| 关 键 词： | 变量检测 模型辨识 故障注入 健康评估 |
| 收稿时间： | 2015/11/20 0:00:00 |
| 修稿时间： | 5/3/2016 12:00:00 AM |
Research on Health Simulation and Evaluation for Electric Servo System Based on Parameter Identification |
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| ZHOU Weizheng,LI Xuefeng and ZENG Qinghua.Research on Health Simulation and Evaluation for Electric Servo System Based on Parameter Identification[J].Journal of National University of Defense Technology,2016,38(4):132-136. |
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| Authors: | ZHOU Weizheng LI Xuefeng and ZENG Qinghua |
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| Institution: | 1.Beijing Aerospace Automatic Control Institute, Beijing 100854, China,1.Beijing Aerospace Automatic Control Institute, Beijing 100854, China and 2. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | Health simulation and evaluation are conducted for electric servo system based on state variable detection and system model. Common failures of electric servo system are summarized, mathematical models are built up for common health states; The characteristics of unhealthy state are obtained by fault injection to build knowledge base. The health factor is applied to evaluate the change trend of failed parameter; The feasibility of health factor algorithm is verified by simulation experiments. |
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| Keywords: | state variable detection model identification fault injection health simulation and evaluation |
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