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arXiv 2312.04046eess.SYcs.SY
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带磁复位的执行器 第一部分:机电模型与辨识

An Actuator with Magnetic Restoration, Part I: Electromechanical Model and Identification

Sajjad Mohammadi, William R. Benner, James L. Kirtley, Jeffrey H. Lang

AI总结:

针对带磁复位的有限转角执行器,本文构建了含涡流、预滑动摩擦效应的非线性及线性化机电模型,推导集总元件电路,提出参数辨识方法,经仿真与实验验证模型精度优于现有方法,为其驱动与控制设计提供支撑。

摘要:

机电模型在电机和执行器的设计与控制中至关重要。本文介绍了一种带磁复位的有限转角执行器的建模、辨识、驱动及电流控制环。研究构建了全新的非线性和线性化机电模型,可用于执行器的驱动设计以及小信号和大信号控制。为实现更高精度和高效设计,研究对叠片和磁体中的涡流进行了建模,包括解析求解一维和二维扩散方程,进而推导得出用于控制系统设计等系统级分析的集总元件电路。此外,研究还分析并纳入了预滑动摩擦的影响。本文制作了执行器原型,并深入研究了模型辨识,提出了一种参数提取流程。模型结果、有限元分析结果与实验结果高度吻合,凸显了所提模型相较于现有方法的优越性。论文第二部分将聚焦驱动电路、电流控制以及线性和非线性位置控制系统设计。

英文摘要:

Electromechanical models are crucial in the design and control of motors and actuators. Modeling, identification, drive, and current control loop of a limited-rotation actuator with magnetic restoration is presented. New nonlinear and linearized electromechanical models are developed for the design of the drive as well as small and large signal controls of the actuator. To attain a higher accuracy and an efficient design, and the eddy-currents in the laminations and magnet are modeled. This involves analytically solving 1-D and 2-D diffusion equations, leading to the derivation of a lumped-element circuit for system-level analyses, such as control system design. Additionally, the study analyzes and incorporates the impact of pre-sliding friction. The actuator is prototyped, and the paper delves into the identification of the model, presenting a procedure for parameter extraction. A close agreement is observed between the results obtained from the model, finite element analysis, and experimental results. The superiority of the proposed model over previous approaches is highlighted. Part II of the paper is dedicated to the drive circuit, the current control, as well as linear and nonlinear position control system designs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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