【摘要】 本文对五自由度飞轮储能系统模块进行了动力学分析。先完成了电磁轴承在单自由度方向上电磁力描述,给出了电磁力和控制电流、位移之间的关系;建立整个系统的动力学微分方程,在此基础上,推导出状态空间表达式。基于状态空间完成了系统的稳定性分析,给出了基于线性二次型最优控制的控制器设计方法。更多还原

【Abstract】 The dynamic characteristic of the active magnetic suspension flywheel energy storage system was studied in this paper.The five degrees-of-freedom flywheel is supported by two radial magnetic bearings and a axial magnetic bearing.First,the active magnetic force of a single degree-of-freedom was given,and the relationship of the magnetic force,the controlling current and the distance was gotten.Then,the dynamic equations of the system are established by the Newton-Euler method.The state-space equations and the output equations are obtained based on dgnamic equations above.To solve the problem of the system stability,the state feedback method based on the Linear Quadratic(LQ)is also adopted.A compute simulation of a flywheel system is used to verify the technique.更多还原