729 A Study on Gimbal Mechanism for AMB-Flywheel Energy Storage System of Electric Vehicle

Abstract

This paper deals an electric vehicle with fiywheel energy storage system using active magnet 量 c bearings ( AMBs ) and gimbaL At first the equation ofmotion of a flywheel energy storage system using active magnetic bearings and gimbal ． This equation of motion is a strong nonlinear equation ． So ， the approximated linear equation of motion is derived and the usefUlness of this approximated equation is made sure by experiments and simulation ． The spring constant of gimbal mechanism influences the natural 丘equencies ． The best design ofgimbal should be extreme low natural f セ equency ofgimbal ． Finally ， the ideal glmbal design method is proposed ，