Adaptive controller for the double‐sided linear switched reluctance motor based on the nonlinear inductance modelling

Abstract

A linear switched reluctance motor (LSRM) is an attractive candidate for high-precision position control applications in industry. Compared to its single-sided counterpart, a double-sided LSRM (DLSRM) has a more propulsion force to mass ratio and normal force can be counteracted from serially connected excitation windings and a symmetric machine structure. In this study, a nonlinear inductance modelling method is proposed by introducing a K factor that reflects both current and position effect on inductance. Considering uncertainties and disturbances from the DLSRM-based motion system, this study implements online parameter estimation with adaptive control strategy to detect system parameter variations and regulate control parameters in real time. Experimental results demonstrate that the proposed control method is capable of position tracking with the desired performance and adaptive to operational changes either under command signal variations or external disturbances. These results prove the effectiveness of the proposed control method for high-precision position control of the DLSRM.

Hierarchical Distributed Motion Control for Multiple Linear Switched Reluctance Machines

“…It employs an asymmetric structure to achieve a higher force-to-volume ratio [14] and the double-sided machine structure further ensures a more stable and reliable output performance [18]. The LSRM consists of six stators with windings that forms phases AA', BB', and CC'.…”

“…In [14], a double-sided, asymmetric LSRM structure is proposed to ensure a higher force-to-volume ratio with more acceleration, compared to a double-sided, symmetric counterpart with the same dimensions and ratings [18]. For the performance enhancement from the control aspect, a nonlinear proportional differential controller is introduced for the real-time LSRM based suspension system to achieve a better dynamic response [17].…”

Hierarchical Distributed Motion Control for Multiple Linear Switched Reluctance Machines

“…2 (a) and (b). It employs an asymmetric structure to achieve a higher force-to-volume ratio [13] and the double-sided machine structure further ensures a more stable and reliable output performance [18]. The LSRM consists of six stators with windings that forms phases AA', BB' and CC'.…”

“…In [13], a double-sided, asymmetric LSRM structure is proposed to ensure a higher force-to-volume ratio with more acceleration, compared to a double-sided, symmetric counterpart with the same dimensions and ratings [18]. For the performance enhancement from the control aspect, a nonlinear proportional differential controller is introduced for the real-time LSRM based suspension system to achieve a better dynamic response [17].…”

“…For the performance enhancement from the control aspect, a nonlinear proportional differential controller is introduced for the real-time LSRM based suspension system to achieve a better dynamic response [17]. An adaptive controller is proposed to combat the difficulties and uncertain control behaviors for a double-sided LSRM in [18], etc.…”