Method of position control by dc servomotor
CA 1209198 A · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Takemoto, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of position control by DC servomotor with improved stiffness is disclosed. In the present invention, electric current (iR) of the servomotor is interpreted anew and given as follows: where .theta. is an observed rotation angle of the load (L) .theta.c is a precommanded value, KF is a feedback coefficient, and KV is a velocity coefficient. After normalizing the above equation, it was discovered that stiffness (S) can be increased by incorporating a limiter into the control system, thus providing prompt response and smooth convergence of .theta. to .theta.c with a high degree of stiffness maintained at the precommanded angle (.theta.c).
Read the whole patent
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 August 5, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 5, 2003.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.