A method, device and system for obtaining motor temperature

Abstract

The invention provides a method, device and system for obtaining the temperature of a motor. During the working process, the temperature of the motor will continue to rise due to friction, and at the same time it will continuously interact with the surrounding environment to release the temperature. This method simulates the motor in the real environment at all times. To calculate the winding temperature at each moment, the present invention does not use the temperature sensor to directly collect the winding temperature of the motor, but obtains the temperature of the brushed motor by simulating the real heating process and cooling process of the brushed motor at all times. winding temperature. Compared with the existing technology, the measurement accuracy will not be affected by the interference of other factors, so the present invention can accurately and real-time obtain the winding temperature of the motor winding at different times, so as to control the working state of the motor, so that there is Brush motors operate within a reasonable temperature range.

Description

technical field [0001] The invention relates to the field of automation, in particular to a method, device and system for acquiring motor temperature. Background technique [0002] With the wide application of motor technology, rotating brushed DC motors (hereinafter referred to as brushed motors) are widely used in various fields due to their simple structure, small size, and simple control strategy. Due to the large copper consumption of brushed motors , so it will continue to generate heat during the working process. When the heat on the brushed motor exceeds a certain level, the brushed motor will be damaged. Therefore, in the prior art, a temperature sensor is generally used to collect the temperature of the brushed motor, so that the brushed motor can be adjusted according to the temperature. The motor is controlled. [0003] The fixed part of the brushed motor is called the stator, and the rotating part is called the rotor. There are windings on the rotor. Generally,...

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Problems solved by technology

[0003] The fixed part of the brushed motor is called the stator, and the rotating part is called the rotor. There are windings on the rotor. Generally, the temperature sensor should be set on the windings. Since the rotor rotates continuously during the working process of the brushed motor, the contact type It is difficult to install the temperature sensor on the winding. If a non-contact sensor is used, the measurement is easily disturbed by external optical factors, resulting in large deviations in the measurement results.

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