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VEHICLE SUSPENSION SYSTEM

  • US 20100230876A1
  • Filed: 03/06/2007
  • Published: 09/16/2010
  • Est. Priority Date: 03/22/2006
  • Status: Active Grant
First Claim
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1. A suspension system for a vehicle, comprising:

  • a suspension spring elastically interconnecting a vehicle body and a wheel of the vehicle;

    an actuator disposed in parallel with said suspension spring and having an electric motor, such that said actuator is capable of generating, based on a force of said electric motor, an actuator force forcing the vehicle body and the wheel toward and away from each other, and causing the generated actuator force to act as a damping force against displacement of the vehicle body and the wheel toward and away from each other; and

    a control device configured to control the actuator force generated by said actuator, by controlling operation of said electric motor,wherein said control device is capable of establishing a constant-force generating state in which the actuator force is constantly generated as a constant actuator force by said actuator with supply of an electric power thereto from a battery as an electric power source of said electric motor such that the generated constant actuator force acts in one of a rebound direction for forcing the vehicle body and the wheel away from each other and a bound direction for forcing the vehicle body and the wheel toward each other,and wherein said control device is configured to control said constant-force generating state, based on a charge state of said battery.

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