| 转子电阻未知时感应电机的一种自适应控制方法 |
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| 引用本文： | 周锐,韩曾晋.转子电阻未知时感应电机的一种自适应控制方法[J].清华大学学报(自然科学版),1998(9). |
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| 作者姓名： | 周锐 韩曾晋 |
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| 作者单位： | 清华大学自动化系 |
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| 基金项目： | 国家教委211工程项目 |
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| 摘 要： | 提出了一种新型的非线性自适应跟踪控制方法，用于解决转子电阻未知，转子磁链需要观测时感应电机的高性能调速问题。控制系统的设计基于两相静止坐标系，针对电流跟随型逆变器情形，采用了Ｌｙａｐｕｎｏｖ型自适应机制。引入一定的近似处理后，转子电阻的估计方程简化为一阶动态方程。磁链自适应观测器中的非线性修正项除考虑转速跟踪误差的影响外，还考虑了转子电阻估计误差和磁链观测误差的影响。证明了控制系统的稳定性和跟踪性，并且给出了仿真结果。
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| 关 键 词： | 感应电机 转子电阻估计 磁链观测 非线性自适应控制 |
Adaptive control scheme of induction motors with unknown rotor resistance |
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| ZHOU Rui,HAN Zengjin Automation.Adaptive control scheme of induction motors with unknown rotor resistance[J].Journal of Tsinghua University(Science and Technology),1998(9). |
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| Authors: | ZHOU Rui HAN Zengjin Automation |
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| Institution: | ZHOU Rui,HAN Zengjin Automation Department,Tsinghua University,Beijing 100084,China |
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| Abstract: | An adaptive nonlinear tracking control scheme for current fed induction motors is proposed in order to reach high performance speed regulation as rotor resistance is unknown and rotor fluxes need observing. The controller bases on two phase fixed reference frame and adopts Lyapunov adaptive control structure. After introducing certain approximate algorithm, the estimate of rotor resistance reduces to a first order dynamic equation. In rotor flux adaptive observers, the influence of flux amplitude tracking error estimate and rotor resistance estimate error in addition to speed tracking error is considered. The stability and tracking ability of the control scheme are proved. Moreover, the simulation results are provided. |
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