摘要
针对传统PID控制存在的缺陷以及永磁同步电机运行中惯量变化问题,提出了永磁伺服电机惯量辨识PI自整定控制方法。测定电机在匀加速过程中不同时刻转速值,通过转动惯量辨识算法得出转动惯量大小,分析转动惯量与速度环中的参数关系来自动整定控制参数。利用MATLAB工具建立系统仿真模型,并与传统PID控制进行了对比,结果表明:惯量辨识PI自整定控制方法实现了启动高速化、无超调及强抗干扰能力,具有很好的动静态性能,能广泛应用在高精度控制系统中,对解决惯量易变系统提供了一种控制依据。
Aiming at the drawbacks of the traditional PID control and the problems of the changes of moment of inertia of PMSM servo system, a new method of moment of inertia identification of PI auto-tuning PMSM servo system is proposed. After the motor speed under the uniform acceleration motion having been measured, this method was employed to calculate the moment of inertia by using optimization. Then the control parameters can be auto-tuned by analysing the parameters＇relationship between moment of inertia and speed loop. Data collected from MATLAB simulation model were compared with those acquired from traditional PID control, it leads to the conclusion that the new method can acquire high-speed starting, no overshoot and strong anti-interference abilities and perform better in both dynamic and static states. Accordingly, it can be widely applied in high precision control system and regarded as a theoretical foundation for solving the problem of variability of inertia.
出处
《电力科学与工程》
2015年第9期28-32,共5页
Electric Power Science and Engineering
基金
上海张江国家自主创新重点项目(201310-PI-B2-008)
沪江基金(C14002)
关键词
永磁同步电机
惯量辨识
PI自整定
permanent magnet synchronous motor
inertia identification
PI auto-tuning
