Shock absorber control system and method of controlling the same
First Claim
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1. A shock absorber control system for a motor vehicle having shock absorbers, said system comprising:
- a vehicle speed sensor for generating a vehicle speed signal in accordance with the rotations of a wheel; and
operation control means having a microprocessor and a RAM for calculating acceleration and deceleration with respect to a moving direction of said vehicle from the vehicle speed signal from the vehicle speed sensor and producing a control signal dependent upon said calculated acceleration and deceleration, whereby attenuation forces of said shock absorbers are regulated in accordance with said control signal.
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Abstract
A shock absorber control system for a motor vehicle having shock absorbers in which the system comprises a vehicle speed sensor and an operation control device for calculating acceleration and deceleration of the vehicle in accordance with the vehicle speed signal from the speed sensor and for producing control signals to the shock absorbers, thereby regulating the attenuation forces of the shock absorbers in accordance with road conditions.
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Citations
15 Claims
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1. A shock absorber control system for a motor vehicle having shock absorbers, said system comprising:
a vehicle speed sensor for generating a vehicle speed signal in accordance with the rotations of a wheel; and
operation control means having a microprocessor and a RAM for calculating acceleration and deceleration with respect to a moving direction of said vehicle from the vehicle speed signal from the vehicle speed sensor and producing a control signal dependent upon said calculated acceleration and deceleration, whereby attenuation forces of said shock absorbers are regulated in accordance with said control signal.- View Dependent Claims (2, 3)
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4. A method of performing the control of shock absorbers for a vehicle which comprises the steps of:
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calculating actual vehicle speed V in accordance with a vehicle speed signal from a vehicle speed sensor; calculating acceleration α and
deceleration β
in accordance with said actual vehicle speed V calculated in a current execution of a program and a vehicle speed V'"'"' calculated in a past execution of the program;determining whether said acceleration α
is above a predetermined reference acceleration α
o and whether said deceleration β
is above a predetermined deceleration β
o; andproducing from an operation control means control signals for either maintaining attenuation forces on each of said shock absorbers to a normal value, i.e., to be low or reducing the attenuation forces below the normal value after the elapse of a predetermined time period; and applying said control signals to the shock absorbers through driving circuits. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of controlling a shock absorber of a vehicle comprising the steps of:
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sensing a running speed of said vehicle; calculating an acceleration of said vehicle with respect to a running direction of said vehicle from said sensed running speed; comparing said calculated acceleration with a predetermined reference acceleration; and changing an attenuation force of said shock absorber in response to a predetermined change in the result of said comparing step. - View Dependent Claims (14, 15)
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Specification