Steering controlling device
First Claim
1. A steering controlling device comprising:
- a power source;
a motor connected to a steering system;
a motor driving circuit converting a power source voltage to a predetermined voltage and applying the converted voltage to the motor; and
a means for controlling the motor driving circuit, wherein the controlling means controls the motor driving circuit to boost the power source voltage when a rotational speed of the motor is greater than a predetermined value, and wherein the controlling means operates the rotational speed of the motor based on an electric current and a voltage of the motor.
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Accused Products
Abstract
A steering controlling device comprising a power source, a motor connected to a steering system, a motor driving circuit converting a power source voltage to a predetermined voltage and applying the voltage to the motor, and a controlling means for controlling the motor driving circuit, wherein the controlling means controls the motor driving circuit so as to boost the power source voltage when a rotational speed of the motor is a predetermined value or more, whereby a sufficient motor output torque is obtainable under various steering conditions in use of a converter, an efficiency is improved by suppressing a frequency of operating the converter, and an appropriate fail safe treatment is conducted when the converter is disordered.
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Citations
19 Claims
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1. A steering controlling device comprising:
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a power source;
a motor connected to a steering system;
a motor driving circuit converting a power source voltage to a predetermined voltage and applying the converted voltage to the motor; and
a means for controlling the motor driving circuit, wherein the controlling means controls the motor driving circuit to boost the power source voltage when a rotational speed of the motor is greater than a predetermined value, and wherein the controlling means operates the rotational speed of the motor based on an electric current and a voltage of the motor. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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2. (canceled).
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3. (canceled).
Specification