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Online synchronous test device and method for dynamic/static torque of motor

A technology of online testing and testing methods, which is applied in the direction of measuring devices, torque measurement, power measurement, etc., can solve the problems of low accuracy of test results, inability to test motor no-load, load dynamic and static torque, and many interference factors at the same time , to achieve the effect of convenient installation and adjustment, wide test frequency range and high measurement accuracy

Active Publication Date: 2016-10-12
HARBIN ENG UNIV
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AI Technical Summary

Problems solved by technology

[0006] In addition, the existing direct test methods for motor torque are often unable to simultaneously test the dynamic and static torque of the motor under no-load, load, and rotor unbalanced and misaligned conditions, and the test results are not accurate enough, and there are many interference factors, etc. factor

Method used

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  • Online synchronous test device and method for dynamic/static torque of motor
  • Online synchronous test device and method for dynamic/static torque of motor

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with examples.

[0029] combine figure 1 and figure 2 , The motor dynamic and static torque synchronous online testing device of the present invention comprises the motor under test 7, the planar thrust bearing 4, the flywheel disc 5, the magnetic powder brake 6, the highly elastic shaft coupling 10, the mounting bracket 9, two high-precision force sensors 3 , an acceleration sensor 1 and a signal acquisition and analysis system.

[0030] First, install the end of the tested motor 7 horizontally on the plane thrust bearing 4 on the rigid mounting bracket 9, then install the flywheel disc 5 on the output shaft of the tested motor 7, and connect the magnetic powder brake with a high elastic coupling 10 6 and the output shaft of the tested motor 7, the installation process ensures that the magnetic powder brake 6 is rigidly installed on the rigid foundation 11, and the shaft of the magnetic powder br...

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Abstract

The invention provides an online synchronous test device and method for the dynamic / static torque of a motor. The test device comprises an installation support arranged on a rigid base, the end portion of the tested motor is placed on the installation support horizontally, a force sensor is rigidly connected between the end portion of the tested motor and the installation support, and an output shaft of the measured motor is connected to a magnetic powder brake, fixed on the rigid base, via a shaft coupling. A signal collector measures the tangential force in an end cap of the motor and the vibration acceleration of the motor body, the tangential force is multiplied by an action moment arm to obtain the dynamic / static torque of the motor, and voltage and current of the motor are tested synchronously to calculate the torque of the motor. The current of the magnetic powder brake is adjusted to obtain different load conditions, and further the dynamic / static torque of the motor in different loads can be measured. The test device and method can be used to test the dynamic / static torques for realizing zero load, loads and different external imbalance forces of the motor.

Description

technical field [0001] The invention relates to a device for testing the dynamic and static torque of an electric motor, and also relates to a method for testing the dynamic and static torque of an electric motor. Specifically, it is an on-line testing device and testing method for dynamic and static torque synchronization of electric motors. Background technique [0002] The dynamic and static torque of the drive motor directly affects the stability of the motor's operation, and has a significant impact on the vibration and noise of the electric drive system, especially for permanent magnet synchronous motors, switched reluctance motors, etc., the accuracy of the dynamic and static torque Measurement is the premise to effectively suppress it and improve the control precision of the system. Compared with the no-load condition of the motor, it is more important to quantitatively analyze the dynamic and static torque characteristics of the motor under the load condition. The ...

Claims

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Application Information

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IPC IPC(8): G01L3/00
CPCG01L3/00
Inventor 李玩幽吴江飞闫东生田震焦殿林鲁涵峰鲁露万伟郝玉涛
Owner HARBIN ENG UNIV
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