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US 5,642,282 AGranted
Apparatus for controlling attitude of a road vehicle cab
AssigneeIsuzu Motors Limited
InventorTsutomu Sonehara
Life of this patent
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Abstract
A cab is supported on a vehicle frame by hydraulic actuators, each provided with a stroke displacement sensor, and a suspension system for the frame includes a plurality of height sensors. The hydraulic actuators are driven by a control system to maintain a stable orientation of the cab in response to signals derived from the displacement and height sensors and representing vertical, longitudinal, lateral, yaw rolling and pitching vibrations of the cab.
Claims7
A road vehicle cab attitude controlling apparatus comprising:
- frame means for supporting wheels of a vehicle;
- cab means mounted on said frame means and movable relative thereto, said cab means adapted for receiving occupants of the vehicle;
- cab sensing means for detecting, between said frame means and a plurality of spaced apart portions of said cab means, cab displacements comprising a plurality of substantially vertical displacements, and at least three displacements extending in directions not joined at a single point and each including vertical, longitudinal and lateral components;
- said cab sensing means providing cab sensor outputs dependent on said detected cab displacements;
- cab actuator means for independently adjusting each of said cab displacements;
- and
- control means providing cab control outputs for controlling said cab actuator means in response to said cab sensor outputs;
- said control means comprising analyzer means receiving said cab sensor outputs and producing in response thereto said cab control outputs;
- and wherein said cab control outputs are proportional to, respectively, vertical, longitudinal, lateral, roll, pitch and yaw motions of said cab means relative to said frame means.
6 more elements
Dependencies are inferred from the claim text.