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US 11,108,352 B2Granted
Method and system for controlling a motor
AssigneeSz Dji Technology Co., Ltd.
InventorsQiu Lan, Changxing Zhou
Life of this patent
Estimating the term…
Abstract
A method for controlling a motor configured to provide propulsion for a mobile platform includes determining whether to activate a preheat mode based on a temperature of a motor and, upon determining to activate the preheat mode, controlling a preheat current provided to the motor to enable self-preheating of the motor.
Claims16
A method for controlling a motor configured to provide propulsion for a mobile platform, the method comprising:
- determining whether to activate a preheat mode based on a temperature of a motor;
- and
- upon determining to activate the preheat mode, controlling a preheat current provided to the motor to enable self-preheating of the motor, the preheat current including a D-axis current, wherein:
- the D-axis current is calculated using a proportional gain and an integral gain of a proportional-integral (IP) model based on the temperature of the motor;
- the proportion gain is determined by controlling the self-preheating of the motor individually using a plurality of proportion gains, and selecting one of the plurality of proportion gains that raises the temperature of the motor to a steady state within a predetermined first time duration;
- and
- the integral gain is determined by controlling the self-preheating of the motor individually using a plurality of integral gains and the proportion gain, and selecting one of the plurality of integral gains that raises the temperature of the motor to a target temperature at the steady state within a predetermined second time duration.
4 more elements
A system for controlling a motor configured to provide propulsion for a mobile platform, the system comprising:
- a controller configured to:
- determine whether to activate a preheat mode based on a temperature of a motor;
- and
- upon determining to activate the preheat mode, control a preheat current provided to the motor to enable self-preheating of the motor, the preheat current including a D-axis current, wherein:
- the D-axis current is calculated using a proportional gain and an integral gain of a proportional-integral (IP) model based on the temperature of the motor;
- the proportion gain is determined by controlling the self-preheating of the motor individually using a plurality of proportion gains, and selecting one of the plurality of proportion gains that raises the temperature of the motor to a steady state within a predetermined first time duration;
- and
- the integral gain is determined by controlling the self-preheating of the motor individually using a plurality of integral gains and the proportion gain, and selecting one of the plurality of integral gains that raises the temperature of the motor to a target temperature at the steady state within a predetermined second time duration.
5 more elements
A mobile platform comprising:
- a motor configured to provide propulsion for the mobile platform;
- and
- a controller configured to:
- determine whether to activate a preheat mode based on the obtained a temperature of a motor;
- and
- upon determining to activate the preheat mode, control a preheat current provided to the motor to enable self-preheating of the motor, the preheat current including a D-axis current, wherein:
- the D-axis current is calculated using a proportional gain and an integral gain of a proportional-integral (IP) model based on the temperature of the motor;
- the proportion gain is determined by controlling the self-preheating of the motor individually using a plurality of proportion gains, and selecting one of the plurality of proportion gains that raises the temperature of the motor to a steady state within a predetermined first time duration;
- and
- the integral gain is determined by controlling the self-preheating of the motor individually using a plurality of integral gains and the proportion gain, and selecting one of the plurality of integral gains that raises the temperature of the motor to a target temperature at the steady state within a predetermined second time duration.
7 more elements
Dependencies are inferred from the claim text.