1、jM,MjjjAjjMbQSCM jMjMjMOR转轴位于压力中心前,转轴位于压力中心前,转轴位于压力中心后,转轴位于压力中心后,出现反操纵现出现反操纵现象象0jMjMQM数且随0jM0jMRIdtIdLUIAMiMwBdtwdJMjjjMMikdtwdJwB iMjk0jM0B)1(K)()()(2STSSUSSWMMkM2K)(SSWMMJRAMKRLTMMT0jM0B1)1()()()(222SMJiSTRMAiSUSSWjMjkM1)(222SMJiRMAiSWjjM当略去当略去时,时,MTMKMTMTjM化简方块图为:)/)()()()(22iMBsJsRLsAsUssWjkm UR
2、bQSmAiAjk )/(2 0jM0jM0jMQ ,QjMff0fRfABSJSRARAAiRMfBSJSRASUSSWjKM/)/(/)()()(222UfK12/AiRMfjjMkkUU22/)(/)(iMSRArBJSRASWjM2/4)(iJMRArBj)/(/)(RArBJSSRASWMURArBRAJ/kjMUjM舵回路简化方块图弹性反馈均衡反馈软反馈速度反馈硬反馈位置反馈fkSWf)(11)/()/(/1/)()()(22STKsAfRBsAfJRfRfABsJsRAsUsswKSkSWff)(iSKSkRAJsRAsUssk)(/)()()(1)(eeSTSTkSWff)11()1()1()()()(eeeeffkTKKSTiSkTKKSTKKsUssMAMAAM)11(eSkiTikffeT1efkTKKMA呈现积分环节为软反馈时:处于低频区工作,当输入电压频率呈现比例环节为硬反馈时:处于高频区工作,当输入电压频率eeT1T1fk四、舵回路举例系统的设计分析n舵回路参数参见P182,且已知速度反馈系数为其开环传递函数为:radsVkf/10886.52 )35.14167.16)(35.14167.16(10444.3)(5jsjssksWf 舵回路根轨迹:,快速性动态响应:功率,通频带通频带:功率,范围线性工作范围:功率ear10131