Motor controller temperature measurement method based on hall sensor temperature characteristics
A technology of Hall sensor and motor controller, applied in the direction of temperature measurement of moving solids, thermometers, thermometers using electric/magnetic components directly sensitive to heat, etc. The effect of burning the wire package and reducing the cost
Active Publication Date: 2021-02-02
WUXI TAICHEUNG ELECTRONICS TECH
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Problems solved by technology
[0002] At present, permanent magnet brushless motors are commonly used in electric bicycles and electric motorcycles; most of the current permanent magnet brushless motor controls are equipped with independent temperature sensors to measure the temperature of the motor during operation; therefore, on the one hand, it leads to increased costs, and on the other hand lead to increased wiring
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[0023] The present invention will be further described below in conjunction with specific drawings and embodiments.
[0024] Hall sensors are widely used in permanent magnet brushless motors to detect the current position of the rotor. When the rotor is stationary, the Hall sensors output specific high and low levels;
[0025] In actual work, some working characteristics of the Hall sensor are found;
[0026] Such as figure 1 As shown, the relationship between the supply current of the Hall sensor and the temperature, when the temperature rises, the supply current of the Hall sensor will decrease;
[0027] Such as figure 2 As shown, the relationship between the low-level voltage output by the Hall sensor and the temperature, when the temperature rises, the low-level voltage output by the Hall sensor will increase;
[0028] The present invention utilizes the working characteristics of the above-mentioned Hall sensor to propose a motor temperature measurement method based on...
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The present invention provides a method for measuring the temperature of a motor based on the temperature characteristics of a Hall sensor for a motor controller. Temperature calibration data sheet, low-level voltage and temperature calibration data sheet to obtain the operating temperature of the motor. Before the measurement, the power supply current and temperature calibration data table of the Hall sensor, the low-level voltage and temperature calibration data table are established hierarchically in the motor controller; the Hall sensor is divided into multiple types, each type of Hall sensor The life cycle of the sensor is divided into multiple stages. For various Hall sensors, a power supply current and temperature calibration data sheet, and a low-level voltage and temperature calibration data sheet are established in each stage of the life cycle. Compared with the existing method of using an independent temperature sensor to measure the temperature of the motor, the method provided by the invention is simpler, can reduce costs, and is more convenient to install.
Description
technical field [0001] The invention relates to the field of permanent magnet brushless motor control, in particular to a method for measuring motor temperature which is simpler than the existing method. Background technique [0002] At present, permanent magnet brushless motors are commonly used in electric bicycles and electric motorcycles; most of the current permanent magnet brushless motor controls are equipped with independent temperature sensors to measure the temperature of the motor during operation; lead to an increase in connection lines. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a motor temperature measurement method for a motor controller based on the temperature characteristics of a Hall sensor, which is simpler than the existing method of measuring the motor temperature using an independent temperature sensor. Can reduce costs. The technical scheme adopted in the...
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IPC IPC(8): G01K7/00G01K13/08
CPCG01K7/00G01K13/08
Inventor 范东东
Owner WUXI TAICHEUNG ELECTRONICS TECH