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. 11, 1997
Filed:
Mar. 17, 1995
Sanshiro Obara, Toukai, JP;
Hiroyuki Yamada, Hitachinaka, JP;
Nobunori Matsudaira, Hitachi, JP;
Ryoso Masaki, Hitachi, JP;
Hitachi Ltd., Tokyo, JP;
Hitachi Automotive Engineering Co., Ltd., Ibaraki, JP;
Abstract
A control equipment for controlling a current to the motor provided in an electric vehicle is disclosed. The control equipment has a motor torque control means for inputting the motor speed No and the motor current, and generating an inverter drive signal to control the torque of the motor, a notch filter for eliminating the mechanical resonance frequency; and a torque command generating means for generating the torque command. The control equipment for an electric vehicle is not influenced by the mechanical vibration of the electric vehicle, can generate the accurate motor torque command, and can execute the stable running control.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile