Stabilization of Magnetic Suspension System by Using Only a First-Order Reset Element without a Derivative Element

Actuators

Takeshi Mizuno¹  Yuji Ishino¹  Masaya Takasaki¹  Daisuke Yamaguchi¹ 

[1] Department of Mechanical Engineering, Saitama University, Shimo okubo 255, Sakura-ku, Saitama 338-8570, Japan;

关键词: magnetic suspension;    nonlinear controller;    reset control;    Clegg’s integrator;    first-order reset element;   

DOI  :  10.3390/act8010024

来源: DOAJ

【 摘 要 】

The stabilization of a magnetic suspension system is achieved by using a low-pass filter (LPF) with a nonlinear integrator without any other element. A proportional-derivative (PD) control is commonly used as the simplest method of stabilizing a magnetic suspension system. Meanwhile, a first-order reset element (FORE) was applied to improve transient characteristics. The original FORE was a first-order LPF with a nonlinear reset integrator element. A magnetic suspension system cannot be stabilized by a linear LPF, nor the original FORE. In this work, the reset conditions of the FORE were modified for magnetic suspension. This modified FORE succeeded in stabilizing a magnetic suspension system. The efficacy of the modified FORE was demonstrated by simulations and experiments. A single degree of freedom magnetic suspension system was used in the experiment.

【 授权许可】

Unknown