感应电机 Super-twisting 算法定子磁链观测器设计
为了提高感应电机定子磁链的观测精确度,提出了一种基于Super-twisting算法的磁链观测方法,设计了定子磁链观测器,并应用到感应电机直接转矩控制中。依据滑模变结构控制的鲁棒性特点来抑制多输入多输出定子磁链观测器系统中的扰动。利用Super-twisting算法所需信息少的优点,设计了简单的控制律,从而更适合于实际工程应用。在对观测器稳定性进行分析时,将转速和耦合量看作扰动来处理,并给出了系统一致渐近稳定的充分条件。与常规电压模型法相比,基于Super-twisting算法的定子磁链估算值更加准确,且对电机定子电阻参数变化具有更强的鲁棒性。仿真和实验结果验证了该方法的有效性。...
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| Published in | 电机与控制学报 Vol. 20; no. 5; pp. 60 - 67 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
北京科技大学自动化学院,北京100083
2016
北京科技大学钢铁流程先进控制教育部重点实验室,北京100083 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1007-449X |
| DOI | 10.15938/j.emc.2016.05.009 |
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| Summary: | 为了提高感应电机定子磁链的观测精确度,提出了一种基于Super-twisting算法的磁链观测方法,设计了定子磁链观测器,并应用到感应电机直接转矩控制中。依据滑模变结构控制的鲁棒性特点来抑制多输入多输出定子磁链观测器系统中的扰动。利用Super-twisting算法所需信息少的优点,设计了简单的控制律,从而更适合于实际工程应用。在对观测器稳定性进行分析时,将转速和耦合量看作扰动来处理,并给出了系统一致渐近稳定的充分条件。与常规电压模型法相比,基于Super-twisting算法的定子磁链估算值更加准确,且对电机定子电阻参数变化具有更强的鲁棒性。仿真和实验结果验证了该方法的有效性。 |
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| Bibliography: | PAN Yue-dou, CHEN Tao, CHEN Ze-ping ( 1. School of Automation, University of Science and Technology Beijing, Beijing 100083, China ; 2. Key Laboratory of Advanced Control of Iron and Steel Process ( Ministry of Education), Beijing 100083, China) 23-1408/TM induction motor;super-twisting algorithm;flux estimation;current estimation;direct torque control In order to improve the observation accuracy of stator flux of induction motor,a stator flux esti-mation method based on Super-twisting algorithm was proposed.A stator flux observer was designed and applied for direct torque control of induction motor.According to the robustness of sliding mode variable structure control,the disturbance of the multiple input multiple output stator flux observer system was re-strained.By using the advantages of Super-twisting algorithm which require less information to design a simple control law,and thus more suitable for practical engineering applications.The speed and amount of coupling were regarded as disturbances in the analy |
| ISSN: | 1007-449X |
| DOI: | 10.15938/j.emc.2016.05.009 |