Motor controller
AssigneeGlobal Mixed-mode Technology Inc.
InventorGuang-Nan Tzeng
Life of this patent
Estimating the term…
Abstract
A motor controller comprises a switch circuit and a control unit. The switch circuit is coupled to a motor for driving the motor. The control unit is configured to generate a plurality of control signals to control the switch circuit. The motor controller sequentially determines a first phase, a second phase, a third phase, and a fourth phase based on a rotation direction. When the motor controller is in the first phase and the motor controller is unable to detect a phase switching time point within a starting time, the motor controller switches from the first phase to the second phase, the third phase, or the fourth phase. The motor controller is configured to increase a success rate of starting the motor.
Claims40
A motor controller comprising:
- a switch circuit, coupled to a motor for driving the motor;
- and
- a control unit, configured to generate a plurality of control signals to control the switch circuit, wherein the motor controller sequentially determines a first phase, a second phase, a third phase, and a fourth phase based on a rotation direction, when the motor controller is in the first phase and the motor controller is unable to detect a phase switching time point within a starting time, the motor controller switches from the first phase to the second phase, the third phase, or the fourth phase, and the starting time is in the range of 1 millisecond to 1,000 milliseconds.
A motor controller comprising:
- a switch circuit, coupled to a motor for driving the motor;
- a control unit, configured to generate a plurality of control signals to control the switch circuit;
- a detecting unit, coupled to the switch circuit for generating a phase signal to the control unit;
- and
- a counting unit, wherein the motor controller sequentially determines a first phase, a second phase, a third phase, and a fourth phase based on a rotation direction, when the motor controller is in the first phase and the motor controller is unable to detect a phase switching time point within a starting time, the motor controller switches from the first phase to the second phase, the counting unit is coupled to the detecting unit for computing the starting time, and the starting time is in the range of 1 millisecond to 1,000 milliseconds.
A motor controller comprising:
- a switch circuit, coupled to a motor for driving the motor;
- a control unit, configured to generate a plurality of control signals to control the switch circuit;
- a detecting unit, coupled to the switch circuit for generating a phase signal to the control unit;
- and
- a counting unit, wherein the motor controller sequentially determines a first phase, a second phase, a third phase, and a fourth phase based on a rotation direction, when the motor controller is in the first phase and the motor controller is unable to detect a phase switching time point within a starting time, the motor controller switches from the first phase to the third phase, the counting unit is coupled to the detecting unit for computing the starting time, and the starting time is in the range of 1 millisecond to 1,000 milliseconds.
A motor controller comprising:
- a switch circuit, coupled to a motor for driving the motor;
- a control unit, configured to generate a plurality of control signals to control the switch circuit;
- a detecting unit, coupled to the switch circuit for generating a phase signal to the control unit;
- and
- a counting unit, wherein the motor controller sequentially determines a first phase, a second phase, a third phase, and a fourth phase based on a rotation direction, when the motor controller is in the first phase and the motor controller is unable to detect a phase switching time point within a starting time, the motor controller switches from the first phase to the fourth phase, the counting unit is coupled to the detecting unit for computing the starting time, and the starting time is in the range of 1 millisecond to 1,000 milliseconds.
Dependencies are inferred from the claim text.