Road vehicle cab attitude controlling apparatus
AssigneeIsuzu Motors Limited
InventorsKenichi Furihata, Fumiaki Takei
Life of this patent
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Abstract
A vehicle cab attitude control system, in which a pair of hydraulic actuators control longitudinal movements between a vehicle frame and portions of the cab located on opposite sides of the cab's center of gravity and spaced vertically therefrom. The hydraulic actuators are controlled dependent on detected changes in longitudinal positions of the cab portions to suppress changes in longitudinal cab attitude. The suppression compensates for existing longitudinal inputs, thus improving riding comfort.
Claims20
A road vehicle cab attitude controlling apparatus comprising:
- frame means supported by wheels of the vehicle;
- a cab mounted on said frame means;
- suspension means mounting said cab on said frame means and allowing relative movement therebetween;
- cab actuator means for controlling longitudinally directed motion of said cab with respect to said frame;
- sensing means for detecting longitudinal displacements between said frame means and said cab;
- and
- control means for controlling said actuator means in response to said sensing means, and operable to suppress said longitudinal displacements between said frame means and said cab;
- said control means producing for said actuator means longitudinal displacement control signals represented by the sum of a value dependent on a difference between said longitudinal displacements, a differential of said value and an integral of said value.
A road vehicle cab attitude controlling apparatus comprising:
- frame means supported by wheels of the vehicle;
- a cab mounted on said frame means;
- suspension means mounting said cab on said frame means and allowing relative movement therebetween;
- cab actuator means for controlling longitudinally directed motion of said cab with respect to said frame;
- sensing means for detecting longitudinal displacements between said frame means and said cab;
- and
- control means for controlling said actuator means in response to said sensing means, and operable to suppress said longitudinal displacements between said frame means and said cab, said control means producing for said actuator means control signals for suppressing longitudinal, yaw and pitch movements of the center of gravity of said cab with respect to said frame means.
Dependencies are inferred from the claim text.