采用阶跃函数作为扰动形式检验线性最优励磁控制

USING JMP FUNCTION AS DISTURBANCE TO TEST LINEAR OPIMAL EXCITATION CONTROL

从分析励磁调节器的实际扰动和线性二次型设计时的扰动方式出发，分析了线性最优励磁调节器存在稳态控制误差的现象。为了使计算机仿真更能接近实际，提出了仿真时用阶跃干扰检验线性最优励磁调节器的方法。仿真结果表明：采用阶跃干扰能模拟出线性最优励磁调节器存在的稳态误差的现象。同时表明：在实用环境里按照线性二次型设计的线性最优励磁调节器是有差调节，为了提高线性最优励磁调节器的性能，必须改进设计。

The phenomenon of the steady-state errors existed in linear optimal excitation control(LOEC) is studied by analysing the actual disturbance of the LOEC and theoretical disturbance used in discussing the linear dynamics and quadratic performance criteria(LQP) problems. In order to make computer simulation closing to actuality, the method of using jump function as disturbane in simulation to test LOEC is proposed. The results of simulation show that by using jump function as disturbance,the phenomenon of that the steady-state errors are existed when using LOEC could be simulated in computer sedation. It also shows that the LOEC designed by using LQP is non-zero error adjuster, in order to raising LOEC's performance, the design must by improved.