The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 1986
Filed:
Jan. 17, 1985
Tsutomu Sainen, Kanazawa, JP;
Takeshi Asai, Kanazawa, JP;
Tsudakoma Corp., Kanazawa, JP;
Abstract
Motor-driven let-off and take-up motions in a loom are controlled by controlling the rotation of a motor for driving warp yarns with a tension control system operating in response to a signal indicative of a target tension and a feedback input signal indicative of an actual tension of the object during a normal operation of the loom, and controlling the rotation of the motor with a feedforward control system during a transient operation of the loom, the feedforward control system storing operation patterns of directions, and speeds of rotation and angular displacement of the motor for respective operation modes and weaving conditions of the loom. At the time of the transient operation, and operating condition of the loom is detected, an appropriate operation pattern is read from the feedforward control system based on the detected operation mode, and the read operation pattern is applied as a control signal to a drive control system for the motor.