Electricity: motive power systems – Positional servo systems – With stabilizing features
Patent
1986-05-22
1988-02-23
Dobeck, Benjamin
Electricity: motive power systems
Positional servo systems
With stabilizing features
318631, G05B 501
Patent
active
047273038
ABSTRACT:
A control system and method including an integrator coupled with a rate-varying multiplier which operate in parallel with a conventional controller. Because the integration is rate-variable, the resulting control system has the benefits of an integral position control without the problems of integral windup and subsequent overshoot. The system and method have less following and steady state error, faster settling time and better tolerance to noise than traditional PD and PID controls in controlling dynamic manipulators such as robots. Also, because the integrations are performed in a rate-variable manner, errors due to mechanical static friction, i.e. "sticktion", are substantially reduced without sacrificing dynamic performance of the system.
REFERENCES:
patent: 4374349 (1983-02-01), Inaba et al.
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patent: 4488098 (1984-12-01), Shimonou
patent: 4500823 (1985-02-01), Walrath
patent: 4507594 (1985-03-01), Takemoto
patent: 4540923 (1985-09-01), Kade et al.
patent: 4612489 (1986-09-01), Gunda
Day Chia P.
Morse Richard A.
Stoddard Kenneth A.
Dobeck Benjamin
GMF Robotics Corporation
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