Apparatus for roll-stabilizing a vehicle
First Claim
1. Apparatus for roll-stabilizing a vehicle, comprising:
- sensing means mounted on said vehicle for sensing the application of an overturning moment to said vehicle in terms of said vehicle'"'"'s lateral acceleration and in terms of said vehicle'"'"'s angular acceleration about a roll axis;
static balance means operable in response to said sensing means for shifting a weight transversely of said vehicle to correct a static imbalance of said vehicle, said static balance means including filter means operatively arranged to filter out high frequency variations in the parameters sensed by said sensing means;
an inertia wheel mounted on said vehicle for rotation about an axis parallel to the longitudinal axis of said vehicle; and
motor means mounted on said vehicle and operable in response to said sensing means for accelerating said inertia wheel in the appropriate angular direction to cause said inertia wheel to exert a reaction torque on said vehicle to oppose a dynamic overturning moment applied thereto.
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Abstract
Apparatus for roll-stabilizing a vehicle broadly includes a compound physical pendulum operatively arranged to sense the lateral and angular acceleration of the vehicle attributable to an applied disturbance torque, and an inertia wheel arranged to be accelerated in the appropriate angular direction to exert a reaction torque on the vehicle to oppose the disturbance torque. The compound physical pendulum has a rigid dumbbell-shaped member mounted for frictionless pivotal movement between opposing discharge nozzles of a hydraulic amplifier. The hydraulic amplifier produces a differential control pressure in response to the acceleration forces acting on the pendulum, and this control pressure is used to operate a servovalve. The servovalve produces a drive pressure which is supplied to a hydraulic motor to accelerate the inertia wheel in the appropriate angular direction. The apparatus may further include static balance means for shifting a weight or fluid mass transversely of the vehicle to correct a static imbalance condition.
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Citations
8 Claims
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1. Apparatus for roll-stabilizing a vehicle, comprising:
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sensing means mounted on said vehicle for sensing the application of an overturning moment to said vehicle in terms of said vehicle'"'"'s lateral acceleration and in terms of said vehicle'"'"'s angular acceleration about a roll axis; static balance means operable in response to said sensing means for shifting a weight transversely of said vehicle to correct a static imbalance of said vehicle, said static balance means including filter means operatively arranged to filter out high frequency variations in the parameters sensed by said sensing means; an inertia wheel mounted on said vehicle for rotation about an axis parallel to the longitudinal axis of said vehicle; and motor means mounted on said vehicle and operable in response to said sensing means for accelerating said inertia wheel in the appropriate angular direction to cause said inertia wheel to exert a reaction torque on said vehicle to oppose a dynamic overturning moment applied thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification