发明授权
- 专利标题： Fault detecting system for a control system
- 专利标题（中）： 控制系统故障检测系统
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申请号： US845062申请日： 1977-10-25
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公开(公告)号： US4171505A公开(公告)日： 1979-10-16
- 发明人: Seiya Shima , Hiroaki Kuroha , Ando Takeki , Hiromi Inaba , Toshiaki Kurosawa , Mutsuhiro Terunuma , Yoshio Sakai
- 申请人： Seiya Shima , Hiroaki Kuroha , Ando Takeki , Hiromi Inaba , Toshiaki Kurosawa , Mutsuhiro Terunuma , Yoshio Sakai
- 申请人地址： JPX
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX
- 优先权： JPX51-128619 19761026
- 主分类号： B66B1/30
- IPC分类号： B66B1/30 ; B66B5/10 ; G05B23/02 ; G05B5/00
摘要：
In a speed feedback control system wherein a speed command signal and a speed feedback signal are compared and wherein the deviation between these signals is entered into a speed control unit, the speed signal is differentiated to apply speed damping in order to suppress the oscillations of the control system. In this case, while the speed command and the actual speed make a great difference transiently, the speed command is approximate to the sum between the speed feedback signal and the damping signal even transiently. Therefore, the speed command signal is compared with the sum between the speed feedback signal and the damping signal, and the fault of the speed control system is detected upon the fact that the deviation has exceeded a predetermined value.
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