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首页> 外文期刊>High Technology Letters >An adaptive load torque observer using hyperstability for PMSM servo system
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An adaptive load torque observer using hyperstability for PMSM servo system

机译:使用超稳定性的PMSM伺服系统自适应负载转矩观测器

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摘要

An adaptive load torque observer is presented to compensate the torque ripple in PMSM servo system. A simple adaptive scheme is derived using Popov s hyperstability theory. The torque ripple detected by the observer is compensated by a feed forwarding equivalent current which gives fast response. The noisy current information is exempt from the observer to avoid its deterioration to the quality of the observer. The speed measurement delay is considered by using observed speed since the instantaneous velocity can t be estimated precisely at low speed because of too few position pulses from the absolute encoder during one time interval. Simulation and experimental results demonstrate that the proposed method can improve the dynamic performance of PMSM servo system satisfyingly.
机译:提出了一种自适应负载转矩观测器,以补偿PMSM伺服系统中的转矩脉动。利用波波夫的超稳定性理论推导了一种简单的自适应方案。观察者检测到的转矩脉动由快速响应的前馈等效电流补偿。嘈杂的当前信息不受观察者的注意,以避免其恶化给观察者的质量。由于在一个时间间隔内来自绝对编码器的位置脉冲太少,因此无法以低速精确估算瞬时速度,因此通过使用观察到的速度来考虑速度测量延迟。仿真和实验结果表明,该方法可以令人满意地改善永磁同步电机伺服系统的动态性能。

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