Electricity: motive power systems – Braking – Dynamic braking
Reexamination Certificate
2006-02-28
2006-02-28
Ip, Paul (Department: 2837)
Electricity: motive power systems
Braking
Dynamic braking
C318S611000, C318S612000, C280S791000, C280S791000, C280S791000, C188S299100
Reexamination Certificate
active
07005816
ABSTRACT:
An electromagnetic suspension system for a vehicle, comprises an electromagnetic actuator interposed between a sprung mass and an unsprung mass and disposed substantially in parallel with an spring element. An electric motor is provided for driving the electromagnetic actuator. A motor controller is configured to calculate a displacement input applied to the electromagnetic actuator and to control the electric motor in a manner that the electromagnetic actuator generates an optimum damping force corresponding to the displacement input. A motor control circuit is provided for the electric motor, through which the electric motor is connected to the motor controller. Additionally, an electrical damping element is electrically connected to the motor control circuit and in parallel with the electric motor to generate a damping force in a passive manner under a dynamic braking of the electric motor in response to the displacement input to the electromagnetic actuator from the unsprung mass.
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Hio Koji
Sato Masaharu
Uno Takaaki
Foley & Lardner LLP
Ip Paul
Nissan Motor Co,. Ltd.
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