发明名称 |
CONTROL SYSTEM AND CONTROL MEANS TO BE USED IN SUCH A CONTROL SYSTEM, AND A CORRELATION SYSTEM |
摘要 |
In a control system a characteristic quantity of a process (1) exhibits a periodic disturbance. A measuring system (2) generates a measuring signal (Vm) which represents the characteristic quantity. A control device controls the process in response to the measuring signal (Vm). To reduce the periodic disturbance, the control device (3) comprises a delay circuit (4) which delays an input signal (Vin) related to the measuring signal (Vm) by a time interval (T) having the length of a period (Tp) of the periodic disturbance. The control device (3) comprises an analysis circuit (6) for deriving an analysis signal (Va) which is indicative of a deviation between the period of the periodic disturbance and the delay time. By means of a control circuit (13) and an adapter circuit (7), the delay time (T) is set in dependence on the analysis signal (Va) to a value for which the analysis signal (Va) indicates that the delay time (T) is equal to the period (Tp). A correlation system can be used for deriving the analysis signal (Va). |
申请公布号 |
WO9613763(A2) |
申请公布日期 |
1996.05.09 |
申请号 |
WO1995IB00816 |
申请日期 |
1995.09.29 |
申请人 |
PHILIPS ELECTRONICS N.V.;PHILIPS NORDEN AB |
发明人 |
SCHOOTSTRA, GERRIT;STEINBUCH, MAARTEN |
分类号 |
G05B5/01;G05B21/02;H04B17/00 |
主分类号 |
G05B5/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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