Electricity: motive power systems – Positional servo systems – With compensating features
Patent
1996-04-22
1998-06-30
Masih, Karen
Electricity: motive power systems
Positional servo systems
With compensating features
318560, 31856818, G05D 23275
Patent
active
057739528
ABSTRACT:
A device for providing self compensation of an operating position servo, as when external forces influence movement of a movable object, for example, when turning a wheel chair seat, has a position encoder for outputting position signal sets and for turning of the movable object, servo circuitry with elements for simultaneously signal handling at least two sets of controlling position signals, each set having at least two positioning signals. The servo circuitry includes a coupling device having at least two coupling members which are switchable between a first position which passes a respective one of the at least two velocity dependent signal components of the second set of controlling positioning signals to circuitry producing a drive powering signal and a second position at least temporarily substituting a corresponding one of the at least two velocity dependent signal components of the second set of controlling position signals with a respective one of the at least two position signal components of the first set of controlling positioning signals and through this said second position of the coupling members to produce self compensation by at least temporarily producing a self-corrected value of the at least two velocity dependent signal components of the second set of controlling positioning signals, and causing the self-corrected value to be accepted as a new initial drive powering signal which is maintained as the drive powering signal by the servo when the coupling members are switched back and attain said first switching position.
REFERENCES:
patent: 4194184 (1980-03-01), Hartmann et al.
patent: 5561242 (1996-10-01), Naumann et al.
Bech Mogens Ilsted
R.o slashed.nne Gert Steen
Gemo 1991 ApS
Masih Karen
Safran David S.
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