Electricity: motive power systems – Automatic and/or with time-delay means – Responsive to stress in body or material
Patent
1974-12-04
1976-10-12
Schaefer, Robert K.
Electricity: motive power systems
Automatic and/or with time-delay means
Responsive to stress in body or material
318 17, 318628, 250449, 250525, G05B 1101
Patent
active
039860906
ABSTRACT:
The servo drive according to the invention includes a force transducer which is disposed so as to sense all the forces which act on the image-forming section (the weight of the section, the manual force of the user, frictional forces and acceleration forces). On the signal from the transducer there is superposed a signal which corresponds to the weight of said section and to the speed variations dn/dt, i.e., to the acceleration forces. Thus the influence of these forces on the output signal is compensated for. The resulting signal serves as the desired value for a speed or acceleration control.
REFERENCES:
patent: 2841714 (1958-07-01), Vaughn
patent: 3215835 (1965-11-01), Mueller
patent: 3790805 (1974-02-01), Foderaro
patent: 3866048 (1975-02-01), Gieschen et al.
patent: 3891856 (1975-06-01), Arnor et al.
Hartmann Heinrich
Hecker Wolfgang
Schmedemann Walter
Feldhaus John J.
Franzblau Bernard
Schaefer Robert K.
Trifari Frank R.
U.S. Philips Corporation
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