基于广义预测算法的直接转矩控制仿真

针对电动汽车电机驱动控制系统结构复杂且系统性能受负载不确定性影响的缺点,提出了一种用于永磁同步电动机广义预测控制方法。从驱动系统动力学方程出发,建立了不依赖电机控制参数的驱动系统CARIMA模型,并采用广义预测算法对驱动系统的给定转矩进行了控制;为了获得良好的变速性能,实现了基于GPC的PMSM驱动系统的直接转矩控制;最后对系统变速过程进行了仿真。仿真结果对比表明,这种控制结构和方法能够实现对转矩变化的有效控制,使速度变化具有较好的平缓控制效果,在工程实际中有很大的应用潜力。

Direct Torque Control Simulation Based on GPC

In order to overcome the drawbacks of conventional drive systems of Electrical Vehicles,that the structure is complicated and the control performance is significantly influenced by various uncertainties load torque,a generalized predictive control method was proposed.The CARIMA model of the permanent magnet synchronous motor drive system was established based on the analysis of dynamic equation.In order to obtain excellent varied speed performance,the generalized predictive control was applied to configure the reference torque of direct torque control system.At last,the varied speed process of system was simulated.Comparable simulation results show that this control method is effective and has the profound application potential.