Motor driver for setting duty cycles based on temperature
AssigneeAnpec Electronics Corporation
InventorMING-JUNG TSAI
Life of this patent
Estimating the term…
Abstract
A motor driver for setting duty cycles based on a temperature is provided. The motor driver senses a temperature of an environment around a motor. The motor driver sets a duty cycle modulation value according to the sensed temperature, and modulates a preset duty cycle to form a startup duty cycle according to the duty cycle modulation value. The motor driver sets or modulates duty cycles of one or more waveforms of a startup signal to be equal to the startup duty cycle. The motor driver outputs the startup signal to the motor.
Claims18
A motor driver for setting duty cycles based on a temperature, comprising:
- a temperature sensor configured to sense a temperature of a motor or an environment around the motor as a sensed temperature, and configured to output a temperature sensed signal according to the sensed temperature;
- a temperature duty cycle modulating circuit connected to the temperature sensor, and configured to output a duty cycle modulation instructing signal according to the temperature sensed signal;
- a startup duty cycle setting circuit connected to the temperature duty cycle modulating circuit, configured to modulate a preset duty cycle to form a startup duty cycle according to the duty cycle modulation instructing signal, and configured to output a startup duty cycle instructing signal according to the startup duty cycle;
- a startup signal generating circuit connected to the startup duty cycle setting circuit, and configured to set or modulate duty cycles of one or more of a plurality of waveforms of a startup signal to be equal to the startup duty cycle according to the startup duty cycle instructing signal;
- and
- a driver circuit connected to the startup signal generating circuit, and configured to output a driving signal to the motor according to the startup signal.
A motor driving method for setting duty cycles based on a temperature, comprising processes of:
- sensing a temperature of a motor or an environment around the motor as a sensed temperature to output a temperature sensed signal;
- outputting a duty cycle modulation instructing signal according to the temperature sensed signal;
- modulating a preset duty cycle to form a startup duty cycle according to the duty cycle modulation instructing signal;
- outputting a startup duty cycle instructing signal according to the startup duty cycle;
- setting or modulating duty cycles of one or more of a plurality of waveforms of a startup signal to be equal to the startup duty cycle according to the startup duty cycle instructing signal;
- and
- outputting a driving signal to the motor according to the startup signal.
Dependencies are inferred from the claim text.