Positioning system employing feedforward and feedback control
CA 1100609 A · Owner: International Business Machines Corporation · Inventors: Oswald, Richard K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A positioning system for moving a member between positions in time optimal fashion employs concurrent feedforward and feedback control. The feedforward control system provides coarse control and the feedback control system provides fine control to correct for deviations between the actual and a nominal system. The feedback loop may thus be of low bandwidth permitting desensitization to high frequency disturbances or the employment of inherently low bandwidth controlled variables. The feedforward control function includes successive portions of opposite polarity corresponding to acceleration and deceleration of the member and also includes a subtractive velocity …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 5, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 5, 1998.
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Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.