Virtual position predictive control with system delay observer to improve PMLSM position tracking accuracy

IF 1.5 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Rongkun Wang, Congwei Su, Quankai Du, Qibin Xiong, Yujia Zhuang, Xinyi Zhang, Xinhua Guo
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Abstract

To improve the position tracking accuracy of permanent magnet linear synchronous motors (PMLSM), this paper introduces a virtual position predictive control (VPPC) with a system delay observer (SDO). Un-like conventional position predictive control (CPPC), which ignores the complexity of prediction models and velocity adjustments, the proposed VPPC combines a simplified position model with an active variable speed control. This design accelerates mover response and increases maximum reference speeds through active adjustments to better estimate the predicted output. Since the prediction period in CPPC often misaligns with the system delay, resulting in additional prediction errors, this paper further explores the relationship between predictive periods and system delay. Based on this analysis and a unified modelling concept, an SDO is included to observe and compensate for system delay, correcting the prediction period and optimising the control model. Experimental results on a PMLSM platform confirm the superior position tracking performance of the VPPC with SDO compared to conventional controllers.

Abstract Image

利用系统延迟观测器进行虚拟位置预测控制,提高 PMLSM 位置跟踪精度
为了提高永磁直线同步电机(PMLSM)的位置跟踪精度,本文介绍了一种带有系统延迟观测器(SDO)的虚拟位置预测控制(VPPC)。与忽略预测模型和速度调整复杂性的传统位置预测控制(CPPC)不同,本文提出的 VPPC 将简化的位置模型与主动变速控制相结合。这种设计通过主动调整来更好地估计预测输出,从而加快了传动装置的响应速度并提高了最大参考速度。由于 CPPC 中的预测周期经常与系统延迟错位,从而导致额外的预测误差,因此本文进一步探讨了预测周期与系统延迟之间的关系。在此分析和统一建模概念的基础上,加入了 SDO 来观测和补偿系统延迟,修正预测周期并优化控制模型。在 PMLSM 平台上的实验结果证实,与传统控制器相比,带有 SDO 的 VPPC 具有更优越的位置跟踪性能。
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来源期刊
Iet Electric Power Applications
Iet Electric Power Applications 工程技术-工程:电子与电气
CiteScore
4.80
自引率
5.90%
发文量
104
审稿时长
3 months
期刊介绍: IET Electric Power Applications publishes papers of a high technical standard with a suitable balance of practice and theory. The scope covers a wide range of applications and apparatus in the power field. In addition to papers focussing on the design and development of electrical equipment, papers relying on analysis are also sought, provided that the arguments are conveyed succinctly and the conclusions are clear. The scope of the journal includes the following: The design and analysis of motors and generators of all sizes Rotating electrical machines Linear machines Actuators Power transformers Railway traction machines and drives Variable speed drives Machines and drives for electrically powered vehicles Industrial and non-industrial applications and processes Current Special Issue. Call for papers: Progress in Electric Machines, Power Converters and their Control for Wave Energy Generation - https://digital-library.theiet.org/files/IET_EPA_CFP_PEMPCCWEG.pdf
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