| 1. | For the single point suspending system , the double loops - pid control algorithm is given , the asymptotic stable range of the coupling system and vibration caused by the hopf bifurcation near the critical state and the nonlinearity of the system are researched first 针对一维单点问题,给出了双环pid控制算法,研究了单点悬浮控制系统的渐近稳定性、 hopf分岔点附近的振动特性和非线性振动的幅频特性。 |