Controller for brushless motor
AssigneeKoyo Seiko Co., Ltd.
InventorsTakeshi Ueda, Shigeki Nagase
Life of this patent
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Abstract
The controller for a brushless motor controls motor current by executing updates of applied voltage to a coil in accordance with rotational position of a rotor, the target current, and the actual current flowing through the coil. The updates of applied voltage to the coil are executed according to the results of calculations of applied voltage to the coil in accordance with the rotational position of the rotor, the target current, and the actual current flowing through the coil, in order to generate power for rotating the rotor by varying magnetic field generated by the coil. The cycle time of the updates of applied voltage is shorter than the cycle time of the calculations of applied voltage corresponding to the rotational position of the rotor.
Claims6
A controller for a brushless motor, which executes updates of applied voltage to a coil according to results of calculations of applied voltage to said coil in accordance with rotational position of a rotor, target current, and actual current flowing through said coil, in order to generate power for rotating said rotor by varying magnetic field generated by said coil, wherein the cycle time of said updates of applied voltage is set shorter than the cycle time of said calculations of applied voltage.
Dependencies are inferred from the claim text.