Control system for adjustable damping force damper
First Claim
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1. A control system for an adjustable damping force damper, comprising:
- a damper and a spring provided on a suspension apparatus of a vehicle;
a sprung speed sensor configured to detect speed of an upper member of the spring, the sprung speed being generated when the vehicle goes over bumps on a road surface; and
a control unit configured to set a gain so as to determine a damping force of the damper based on a product of the sprung speed and the gain,wherein, when an absolute value of the sprung speed exceeds a predetermined value, the control unit changes the gain differently in response to a positive sign than in response to a negative sign of the sprung speed, andwherein the gain when the sign of the sprung speed is positive is larger than the gain when the sign of the sprung speed is negative.
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Abstract
A control system for a adjustable damping force damper includes a damper and a spring provided on a suspension apparatus of a vehicle, a sprung speed sensor for detecting speed of an upper member of the spring, the sprung speed is generated when the vehicle gets over steps on a road surface and a control unit for setting a gain so as to determine an damping force of the damper based on a product of the sprung speed and the gain. When an absolute value of the sprung speed exceeds a predetermined value, the control unit changes the gain in response to a positive sign or a negative sign of the sprung speed.
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Citations
5 Claims
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1. A control system for an adjustable damping force damper, comprising:
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a damper and a spring provided on a suspension apparatus of a vehicle; a sprung speed sensor configured to detect speed of an upper member of the spring, the sprung speed being generated when the vehicle goes over bumps on a road surface; and a control unit configured to set a gain so as to determine a damping force of the damper based on a product of the sprung speed and the gain, wherein, when an absolute value of the sprung speed exceeds a predetermined value, the control unit changes the gain differently in response to a positive sign than in response to a negative sign of the sprung speed, and wherein the gain when the sign of the sprung speed is positive is larger than the gain when the sign of the sprung speed is negative. - View Dependent Claims (2, 3, 4, 5)
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Specification