Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Vehicle subsystem or accessory control
Patent
1997-03-14
1999-10-19
Cuchlinski, Jr., William A.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Vehicle subsystem or accessory control
701 48, 280 55, 280 5501, G06F 1700
Patent
active
059681020
ABSTRACT:
The present invention provides a suspension control apparatus which can perform good suspension control regardless of change in temperature. The suspension control apparatus comprises a transistor capable of being turned ON/OFF in response to a level of a PWM signal, a current sensor for detecting current flowing through a proportional solenoid, and a controller for adjusting a duty ratio of the PWM signal on the basis of the comparison between a current data detected by the current detecting means and a previously set reference data to correct command current. The current actually flowing through the proportional solenoid is measured, and the duty ratio of the PWM signal is adjusted to obtain a desired damping force on the basis of the measured current. With this arrangement, if a temperature of the proportional solenoid is increased to increase resistance thereof due to application of current to the proportional solenoid, the applied current is corrected to provide the desired damping force.
REFERENCES:
patent: 5048861 (1991-09-01), Takahashi
patent: 5202813 (1993-04-01), Uota et al.
patent: 5400245 (1995-03-01), Butsuen et al.
patent: 5619413 (1997-04-01), Oakley
patent: 5701245 (1997-12-01), Ogawa et al.
Ichimaru Nobuyuki
Sakai Hiroshi
Uchiyama Masaaki
Arthur Gertrude
Cuchlinski Jr. William A.
Tokico Ltd.
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