自动控制第三章要点.pptx

1;2;3;4;5; 2 . The step response of the first-order system; 2 . The step response of the first-order system; §3.2.3 一阶系统的典型响应;Example: the first-order system is shown as fig.1, now change it to a feedback system shown as fig.2, but you need to reduce the setting time as 0.1 times as the open-loop response and keep the gain invariable, how to set the K0 and KH ?; 3.5 Stability of linear systems (Stability: the most important performance for a control system);11; conclusion(Routh Criterion): ; ;14;15;16;17;18;19;20; ; ;23;3.3.2 Solving the steady-state error  — by the final value principle;25;2) r(t)=A0t ---Ramp input signal ;3) parabolic input signal;28;2. steady-state error only caused by the disturbance signals;30;31;3.3.3 Approaches to reduce the steady-state error ;Solution: