摘要
提出一种交流电机伺服系统的转速控制方案,在未知负载条件下可实现速度的准确调节。基于永磁同步电机伺服系统中位置与速度环组成的数学模型,以电机转角位置作为系统的测量反馈信号,设计一个扩展状态观测器对系统转速(未量测)和未知负载扰动加以估计,并用于控制和补偿。从理论上分析了速度控制系统的渐近稳定性。最后进行了MATLAB仿真和基于TMS320F2812DSP的实验测试,结果表明伺服系统能在扰动情况下实现平稳和准确的目标转速跟踪。
A control scheme is proposed to achieve accurate speed regulation in AC motor servo systems with unknown load disturbance. The scheme is based on the mathematical model of the position-speed loop in permanent magnet synchronous motor （PMSM） servo system, with the motor angular position as the only measurable feedback signal. An extended state observer is adopted to estimate the un-measured state （speed） and the unknown load disturbance for control and compensation. The asymptotic stability of the speed control system is analyzed theoretically. MATLAB simulation and experimental tests using the TMS320F2812 have been conducted, and the results verify that the servo system is capable of tracking the target speed smoothly and accurately in the face of load disturbance. The control scheme can be easily applied to relevant servo systems.
出处
《自动化与信息工程》
2013年第1期30-33,共4页
Automation & Information Engineering
基金
福建省自然科学基金(2012J01258)
关键词
永磁同步电机
观测器
扰动
调速
Permanent Magnet Synchronous Motor （PMSM）
Observer
Disturbance
Speed Regulation
