Adaptive control system

Details Adaptive control system Adaptive control system

1983-08-15

1985-02-05

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Adaptive or optimizing systems including 'bang-bang' servos

318599, 318615, 364148, G05B 1300

Patent

active

044980361

ABSTRACT:
A method of adaptive control for use in a controlled system having an adjustable forward loop gain and a control system apparatus for carrying out the method are disclosed. The control system measures the value of a parameter which is to be controlled and generates an error signal by comparing the measured valve of the parameter with a desired valve. The error signal is squared and the time derivative of the squared error signal is obtained. The control system compares the length of time that the derivative so obtained has a positive value to the time it has a negative value to obtain a gain control signal, and applies the gain control signal to the forward loop gain. The gain control signal reduces the adjustable forward loop gain until a preselected margin of stability in the controlled system is obtained.

REFERENCES:
patent: 3241015 (1966-03-01), Allen
patent: 3283230 (1966-11-01), Davies et al.
patent: 3504247 (1970-03-01), Hamel
patent: 3759139 (1973-09-01), Whetham
patent: 4064444 (1977-12-01), Hoang
patent: 4257074 (1981-03-01), Goss
patent: 4355273 (1982-10-01), Du Vall
patent: 4369400 (1983-01-01), Turner

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