Title:
PID CONTROLLER
Document Type and Number:
Japanese Patent JPS6194104
Kind Code:
A
Abstract:
PURPOSE:To attain the automatic control of a PID constant without inflicting any disturbance to a control system by increasing the proportional amplification factor when a deviation signal is set outside the reference deviation value and then reducing said amplification factor if the amplitude of oscillation is larger than a reference level within the range of the reference deviation value. CONSTITUTION:A deviation signal is obtained from a signal to be controlled and the target value and a proportional amplifying part 1 adds the value of the deviation signal to an operating amount with amplification for output. Then the absolute value of the deviation signal is compared with the reference deviation value through a comparison/decision part 21 and the amplification factor of the part 1 is increased when said absolute value exceeds the range of the reference deviation value. While the amplification of the deviation signal is detected. Then the amplification factor of the part 1 is decreased when the detected amplification of the deviation signal is larger than the reference value after comparison carried out through a comparison/decision part 22. Furthermore the deviation signal is added with amplification to the operating amount according to the actuation of a oscillation cycle estimation memory part 24 via an integration processing part 2 and a differential processing part 4. Then the proportional amplification factor, the integral amplification factor and the differential amplification factor are controlled for each timing. Thus it is possible for a signal to be controlled to approximate rapidly to the target control value.
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Inventors:
HIROSE IKUO
Application Number:
JP20858984A
Publication Date:
May 13, 1986
Filing Date:
October 04, 1984
Export Citation:
Assignee:
TAIHEIYO KOGYO KK
International Classes:
G05B13/02; G05B11/42; (IPC1-7): G05B11/36
Domestic Patent References:
| JPS55127608A | 1980-10-02 |