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:
Mar. 27, 2001
Filed:
Feb. 19, 1999
Hiroyuki Yamai, Okamoto-cho, Kusatsu-shi, Shiga 525-0044, JP;
Nobuki Kitano, Okamoto-cho, Kusatsu-shi, Shiga 525-0044, JP;
Yoshihito Sanga, Okamoto-cho, Kusatsu-shi, Shiga 525-0044, JP;
Manabu Kosaka, Okamoto-cho, Kusatsu-shi, Shiga 525-0044, JP;
Other;
Abstract
When torque control is performed for suppressing speed change within one rotation using a synchronous motor (,) controlled by an inverter (,) for a load having cyclic torque changing, an arrangement is employed which includes inverter control means (,) (,) for controlling the inverter (,) so as to superpose a changing amount upon an amplitude and phase of a current waveform or voltage waveform, so that torque control is realized for reducing low speed vibration of a cyclic intermittent load with maximum efficiency condition and with practical arrangement.