Electric power steering controller
First Claim
1. An electric power steering controller for giving a superimposed reaction force torque in the return direction of a steering wheel, comprising:
- a reaction force torque detecting unit for detecting a reaction force torque of a steering system;
a superimposed reaction force torque calculating unit for calculating a superimposed reaction force torque in the return direction of a steering wheel; and
a control unit for controlling said gain such that said superimposed reaction force torque is reduced when said reaction force torque is large and said superimposed reaction force torque is increased when said reaction force is small.
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Abstract
There is provided an electric motor controller for a steering device that can give an appropriate steering force to a steering wheel according to running conditions. An electric power steering controller of the present invention is provided with a steering shaft reaction force torque sensor for detecting a reaction force torque of a steering system, a superimposed reaction force torque calculating unit for multiplying a steering angle detected by the steering angle sensor by a gain-to calculate a superimposed reaction force torque in the return direction of a steering wheel and a control unit for controlling the gain such that the superimposed reaction force torque is reduced when a reaction force torque of the steering system is large and the superimposed reaction force torque is increased when a reaction force torque of the steering system is small.
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Citations
10 Claims
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1. An electric power steering controller for giving a superimposed reaction force torque in the return direction of a steering wheel, comprising:
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a reaction force torque detecting unit for detecting a reaction force torque of a steering system;
a superimposed reaction force torque calculating unit for calculating a superimposed reaction force torque in the return direction of a steering wheel; and
a control unit for controlling said gain such that said superimposed reaction force torque is reduced when said reaction force torque is large and said superimposed reaction force torque is increased when said reaction force is small. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification