Steering apparatus for a vehicle
First Claim
1. A steering apparatus for a vehicle, comprising:
- a steering operating means which is not mechanically connected to a steering mechanism for changing a direction of wheels;
a steering angle detecting means for detecting a steering angle of said steering operating means;
a steering angle control means for controlling an increase and decrease in a steering angle of said steering mechanism according to the steering angle detected by said steering angle detecting means;
a reaction force instruction means for obtaining a reaction force which is to be applied to said steering operating means and directs it to a neutral position on the basis of the steering angle so as to output a reaction force instruction signal for instructing that the obtained reaction force is applied to said steering operating means;
a reaction force control means for controlling an increase and decrease in the reaction force to be applied to said steering operating means on the basis of the reaction force instruction signal;
a motor for applying the reaction force to said steering operating means under control of said reaction force control means;
means for detecting an overload state of said motor; and
means for notifying said reaction force instruction mean of the overload state when the overload state is detected,said reaction force instruction means varying the reaction force instruction signal so as to decrease the reaction force applied by said motor by a predetermined proportion when receiving the notification of the overload state.
1 Assignment
0 Petitions
Accused Products
Abstract
A steering apparatus for a vehicle comprising a reaction force control means for controlling an increase and decrease in a reaction force to be applied to a steering operating means on the basis of a reaction force instruction signal, a motor for applying the reaction force to a steering operating means with control of the reaction force control means, means for detecting an overload state of the motor, means for notifying a reaction force instruction means of the overload state when the overload state is detected, and a reaction force instruction means for decreasing to correct the reaction force instruction signal in a predetermined ratio when receiving the notification of the overload state from the reaction force control means.
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Citations
8 Claims
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1. A steering apparatus for a vehicle, comprising:
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a steering operating means which is not mechanically connected to a steering mechanism for changing a direction of wheels; a steering angle detecting means for detecting a steering angle of said steering operating means; a steering angle control means for controlling an increase and decrease in a steering angle of said steering mechanism according to the steering angle detected by said steering angle detecting means; a reaction force instruction means for obtaining a reaction force which is to be applied to said steering operating means and directs it to a neutral position on the basis of the steering angle so as to output a reaction force instruction signal for instructing that the obtained reaction force is applied to said steering operating means; a reaction force control means for controlling an increase and decrease in the reaction force to be applied to said steering operating means on the basis of the reaction force instruction signal; a motor for applying the reaction force to said steering operating means under control of said reaction force control means; means for detecting an overload state of said motor; and means for notifying said reaction force instruction mean of the overload state when the overload state is detected, said reaction force instruction means varying the reaction force instruction signal so as to decrease the reaction force applied by said motor by a predetermined proportion when receiving the notification of the overload state. - View Dependent Claims (2, 3, 4)
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5. A steering apparatus for a vehicle including a steering operating device, controlled by an operator which is not mechanically connected to a steering mechanism which changes direction of vehicle wheels, comprising:
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a steering angle detector detecting the orientation of the steering operating device; a steering angle controller controlling said steering mechanism according to the orientation detected by said steering angle detector; a reaction force controller producing a reaction force signal related to a desired reaction force which is to be applied to said steering operating device so as to direct it to a neutral position on the basis of the steering angle; a motor controlled by the reaction force signal and coupled to apply the reaction force to the steering operating device; a motor overload state detector producing an overload signal indicating motor overload; and said reaction force controller responding to said overload signal by adjusting the reaction force signal so as to reduce the reaction force applied by said motor by a predetermined proportion. - View Dependent Claims (6, 7, 8)
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Specification