发明授权
- 专利标题: Frequency control in closed loop control systems
- 专利标题(中): 闭环控制系统中的频率控制
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申请号: US11575540申请日: 2005-09-23
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公开(公告)号: US08000817B2公开(公告)日: 2011-08-16
- 发明人: Kent J. Spindler , Scott D. Thorson , Robert J. Carlin , Steven A. Cinnamon
- 申请人: Kent J. Spindler , Scott D. Thorson , Robert J. Carlin , Steven A. Cinnamon
- 申请人地址: US MN St. Paul
- 专利权人: 3M Innovative Properties Company
- 当前专利权人: 3M Innovative Properties Company
- 当前专利权人地址: US MN St. Paul
- 代理商 Douglas B. Little
- 国际申请: PCT/US2005/034466 WO 20050923
- 国际公布: WO2006/036905 WO 20060406
- 主分类号: G05B11/01
- IPC分类号: G05B11/01 ; G05B13/02 ; H03F1/26 ; H04B15/00
摘要:
Process controllers, methods, and systems provide for frequency control to account for the effects of periodic disturbances in the feedback signal of closed loop control systems. The frequency components of the feedback signal are determined, including the magnitude and phase of each. Waveforms for each frequency component are generated with substantially the same magnitude and substantially the opposite phase of each frequency component. The waveforms are then summed to produce a compensating waveform that is summed within the output of the control system so that the effects of the periodic disturbances are cancelled from the control system output being provided to the system under control.
公开/授权文献
- US20070282466A1 Frequency Control in Closed Loop Control Systems 公开/授权日:2007-12-06