Dynamic determination of friction in a closed loop control syste

Details Dynamic determination of friction in a closed loop control syste Dynamic determination of friction in a closed loop control syste

1981-10-20

1983-05-10

Weldon, Ulysses

Electricity: motive power systems

Positional servo systems

With stabilizing features

318490, 318638, 318601, G05B 501

Patent

active

043832083

ABSTRACT:
A novel method and apparatus for dynamically monitoring the friction associated with an electromechanical system including a motor. The apparatus includes a closed loop servo with a unique filtering means in the feed forward loop for controlling the phase and magnitude of a "digital" ramp function used to drive the electromechanical system. The value of the filtered error signal outputted from the filtering means correlates with the friction in said electromechanical system.

REFERENCES:
patent: 2549022 (1951-04-01), Shenk et al.
patent: 3122687 (1964-02-01), Romvari
patent: 3657623 (1972-04-01), Fludzinski
patent: 3780364 (1973-12-01), Henderson
patent: 3839628 (1974-10-01), Higgins et al.
patent: 3916279 (1975-10-01), Kawano et al.
patent: 4019107 (1977-04-01), Dixon et al.
patent: 4215298 (1982-07-01), Bigley et al.
IBM Technical Disclosure Bulletin, vol. 17, No. 1, Jun. 1974, "Meter Speed Control", by D. E. Popp.

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