Method and system for changing control parameters in accordance

Details Method and system for changing control parameters in accordance Method and system for changing control parameters in accordance

1990-02-20

1991-01-08

Ip, Paul

Electricity: motive power systems

Positional servo systems

Adaptive or optimizing systems including 'bang-bang' servos

318610, 318611, 364150, 364157, 364161, G05B 1304

Patent

active

049838989

ABSTRACT:
A determination and control section of a process control system samples a set value, a difference value, a manipulated variable, and a controlled variable to determine a state of a process. When it is determined that the process is in an unstable state, an adaptive unit estimates a dynamic characteristic of the process, and calculate PID control parameters using a partial model matching method in a frequency region. When it is determined that the process is in an insufficient response state, the PID control parameter is regulated without operating the adaptive unit to decrease the gain of the process control system.

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Measurement and Control, vol. 27, No. 4, pp. 305-311, Society Shigemasa, Yutaka Iino, and Masae Kanda.

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