基于迭代学习控制的PMLSM推力波动抑制策略

发布时间：2018-04-27 01:41

本文选题：永磁直线同步电机 + 推力波动控制　；参考：《河南理工大学》2014年硕士论文

【摘要】：现在,PMLSM(永磁直线同步电机)被广泛的应用到垂直运输系统中,因为它不仅具有高效率、节约能源和结构相对简单等优点,并且其运行距离与运行速度不受约束,所以它具有很大的理论研究价值和应用前景。但是,由于PMLSM没有了中间的转动装置,PMLSM在实际运行过程中会不可避免的受到内部和外部的影响,导致运行过程产生推力波动,提升系统的稳定性受到很大的影响,所以应及时采用控制策略对推力波动进行抑制,不然有可能发生失步,这就引发了重大安全事故的产生,这个关键问题一直困扰着设计者和使用者。所以,精确可靠的检查方法的使用,使用有效地控制策略抑制推力波动,这对保障PMLSM驱动的垂直提升系统的稳定运行有着很大的意义。通过对提升系统(PMLSM驱动)的研究,重点分析了垂直运动的PMLSM产生推力波动的原因、提出了控制参数的检测方法和制定了对推力波动进行抑制的控制策略,通过对分段式PMLSM提升系统的工作原理与基本结构的分析,可以得出永磁直线同步电机功率角与位置角的关系解析式。针对隐极式PMLSM,其动子位置角的测量方法被提出。在基于模糊PID控制的基础上,以功角的变化为基础建立了基于迭代学习控制算法的PMLSM推力波动抑制策略,使用这种双重控制策略,使控制效果更加完美。对抑制永磁直线电机推力波动的控制策略进行了整体建模,为验证该方法的有效性,利用Matlab/Simulink仿真软件对其进行了仿真,仿真结果证实了此方案是可行的。为了进一步证明抑制推力波动策略的有效性,我们对其进行了实验,实验平台使用运行距离为10米、承受1.5吨重量的PMLSM驱动的提升机,实验数据结果表明了控制策略的效果非常好。
[Abstract]:Now, PMLSM (permanent magnet linear synchronous motor) is widely used in the vertical transportation system, because it not only has the advantages of high efficiency, energy saving and relatively simple structure, but also its running distance and running speed are not restricted, so it has great theoretical research value and application prospect. However, because PMLSM has no intermediate In the actual operation, the PMLSM will inevitably be influenced by the internal and external effects during the actual operation, which leads to the thrust fluctuation in the operation process, and the stability of the system is greatly affected. Therefore, the control strategy should be adopted in time to suppress the thrust fluctuation, or it may be possible to lose the step, which leads to a major safety accident. This key problem has been perplexing the designers and users. Therefore, the use of accurate and reliable inspection methods, the use of effective control strategy to suppress the thrust fluctuation is of great significance for the stable operation of the vertical lifting system driven by PMLSM. Through the study of the lift system (PMLSM drive), it focuses on the vertical analysis of the vertical lifting system. The cause of the thrust fluctuation of the motion PMLSM is produced, the control method of the control parameters and the control strategy to restrain the thrust fluctuation are put forward. Through the analysis of the working principle and the basic structure of the piecewise PMLSM lifting system, the relationship between the power rate angle and the position angle of the permanent magnet linear synchronous motor can be obtained. PMLSM, the measurement method of the position angle of the actuator is proposed. Based on the fuzzy PID control, the PMLSM thrust fluctuation suppression strategy based on the iterative learning control algorithm is established on the basis of the change of the work angle. The control strategy is used to make the control effect more perfect. The control strategy for the suppression of the thrust fluctuation of the permanent magnet linear motor is made. In order to verify the effectiveness of the method, Matlab/Simulink simulation software is used to simulate it. The simulation results confirm the feasibility of this scheme. In order to further prove the effectiveness of the strategy of suppressing the thrust fluctuation, we have carried out experiments on it, and the experimental platform uses a running distance of 10 meters and the weight of 1.5 tons of PM. LSM driven hoist, experimental data show that the control strategy is very effective.

【学位授予单位】：河南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM341

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