变频调速非线性L_2增益控制

针对感应电机中变量的非线性耦合、模型参数不确定性和外界干扰等问题,将电机转子电阻与负载转矩作为系统变参数,基于系统鲁棒耗散的特点,提出了一种满足Hamilton-Jacobi-Issacs不等式的非线性自适应的鲁棒L2增益算法的感应电机交流调速控制策略.在线自动调整变参数方法,可以保证系统对转子磁链、转速及负载转矩的渐进跟踪性能,且控制算法简单易于理解.理论分析和仿真结果表明,设计所获得的系统具有良好的鲁棒性能和快速响应能力.

Fregaency Conversion and Speed Regulation Based on Nonlinear L_2-Gain Controller

In view of nonlinear coupling of variables,uncertainty of model parameters and external disturbance existing in induction motor,the rotor resistance and load torque are considered as variable parameters.Based on robust passivity theory,a control strategy of induction motor is proposed which satisfies nonlinear adaptive L2-gain algorithm of Hamilton-Jacobi-Issacs inequlity.By on-line adjusing parameters,the control system can asymptotically track rotor flux,speed and load torgue,and the control algorithm is ...