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:
Sep. 18, 2007
Filed:
Feb. 02, 2004
Koji Hio, Kanagawa, JP;
Takaaki Uno, Kanagawa, JP;
Masaharu Sato, Tokyo, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
An electromagnetic suspension apparatus for an automotive vehicle, employs an electromagnetic actuator interleaved between a sprung mass and an unsprung mass and arranged in parallel with a suspension spring element, and an electric motor built in the electromagnetic actuator for driving the electromagnetic actuator. A motor controller calculates a displacement input, such as a suspension stroke acceleration and a suspension velocity, transmitted to the electromagnetic actuator, and controls the motor to bring a suspension damping force closer to a desired damping force suited for the displacement input. The motor controller calculates an internal inertia force of the electromagnetic actuator, and corrects or compensates for a motor output by the internal inertia force of the electromagnetic actuator.