Title:
PROPORTIONAL INTEGRATING DEVICE
Document Type and Number:
Japanese Patent JPS61128303
Kind Code:
A
Abstract:
PURPOSE:To improve the responsiveness and safeness of a control system by changing respective parameters of the gain and time constant of the titled device as the function of a deviation of a deviation between an objective value and a current value and determining the optimum parameter. CONSTITUTION:When control is started, a deviation between a reference input signal 2 and a feedback signal 3 is calculated by an adder/subtractor 1 and a control operation signal 4 is inputted to a proportional gain function generator 8 and an integration time constant function generator 10 to determine a proportional gain value 9 and an integration time constant 11. If the generators 8, 10 are set up to a monotone increasing function and a monotone decreasing function for the absolute value of the signal 4, the responsibility in a transient area where the signal is increased can be improved and the stability in a steady area where the signal 4 is decreased can be improved. The signal 4 is inputted to a proportional integrator 5 and the gain is multiplied by a proportional element on the basis of the gain 9 and the time constant 11 obtained by a parameter determining device. The integration element is integrated by a variation rate corresponding to the time constant and a control signal 6 is outputted and fed back to the adder/subtractor 1.
Inventors:
OBO RYOSAKU
Application Number:
JP25101784A
Publication Date:
June 16, 1986
Filing Date:
November 27, 1984
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G05B13/00; G05B13/02; (IPC1-7): G05B13/00
Domestic Patent References:
| JPS4938075A | 1974-04-09 | |||
| JPS5580119A | 1980-06-17 |
Attorney, Agent or Firm:
Masuo Oiwa