Motor system
AssigneeGlobal Mixed-mode Technology Inc.
InventorChing-Feng Lai
Life of this patent
Estimating the term…
Abstract
The present invention discloses a motor system without a hall sensing element. The motor system comprises a first output pin, a second output pin, an auxiliary pin, a stator, a rotor, a primary coil, and an auxiliary coil. Both the primary coil and the auxiliary coil surround the stator. The primary coil is coupled to the first output pin and the second output pin. The auxiliary coil is coupled to the auxiliary pin. The auxiliary coil is configured to determine a phase switching time point. The motor system detects the zero point of the voltage of the auxiliary pin, so as to detect the position of the rotor and determine the phase switching time point.
Claims19
A motor system comprising:
- a first output pin;
- a second output pin;
- an auxiliary pin;
- a primary coil, coupled to the first output pin and the second output pin;
- an auxiliary coil, coupled to the auxiliary pin;
- and
- a stator, wherein both the primary coil and the auxiliary coil surround the stator, and the motor system determines a phase switching time point based on a zero point of the voltage of the auxiliary pin.
(canceled)
A motor system comprising:
- a first terminal;
- a second terminal;
- a first auxiliary terminal;
- a rotor;
- a primary coil, coupled to the first terminal and the second terminal;
- an auxiliary coil, coupled to the first auxiliary terminal;
- a stator, wherein both the primary coil and the auxiliary coil surround the stator;
- a switch circuit, configured to supply a driving current to the primary coil;
- and
- a control unit, configured to generate a plurality of control signals to control the switch circuit, wherein the motor system determines a phase switching time point based on a zero point of the voltage of the first auxiliary terminal.
(canceled)
Dependencies are inferred from the claim text.