| 基于模糊 PID 控制器的电液负载模拟系统 |
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| 引用本文： | 杨钢,刘迎雨,杜经民,李宝仁.基于模糊 PID 控制器的电液负载模拟系统[J].华中科技大学学报(自然科学版),2012,40(4):59-62. |
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| 作者姓名： | 杨钢 刘迎雨 杜经民 李宝仁 |
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| 作者单位： | 华中科技大学机械科学与工程学院,湖北武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 基于传统控制理论建立双马达加载工况下的系统数学模型，分析多余力矩的产生机理和特性，并以被控对象的速度为观测量，提出基于结构不变性原理的速度前馈补偿．针对常规PID控制器无法解决系统非线性和参数时变性等问题，设计了以系统的误差和误差变化率为输入量的模糊PID控制器．仿真结果表明：速度前馈补偿克服了近97％的多余力矩；模糊PID控制器能较好地改善系统在高频段的控制性能．
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| 关 键 词： | 电液负载模拟系统 多余力矩 速度前馈补偿 结构不变性原理 模糊PID控制器 |
Electro-hydraulic load systems based on fuzzy PID controller |
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| Yang Gang Liu Yingyu Du Jingmin Li Baoren.Electro-hydraulic load systems based on fuzzy PID controller[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2012,40(4):59-62. |
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| Authors: | Yang Gang Liu Yingyu Du Jingmin Li Baoren |
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| Institution: | Yang Gang Liu Yingyu Du Jingmin Li Baoren(School of Mechanical Science and Engineering,Huazhong Universityof Science and Technology,Wuhan 430074,China) |
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| Abstract: | The mathematical model of the system with the dual motor loading condition was implemented based on the traditional control theory and the generation mechanism of the surplus torque was analyzed.Speed-feedforward compensation was proposed based on the speed of the controlled object and fuzzy PID(proportion integration differentiation) controller was designed for the problems of nonlinearity and time-varying parameters of the system.The results show that the speed-feedforward compensation can overcame the surplus torque by 97% nearly and the control performance of the system at the high frequency is improved by fuzzy PID controller. |
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| Keywords: | electro-hydraulic load simulator surplus torque speed-feedforward compensation struc-ture invariance principle fuzzy PID controller |
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