A method for measuring the moment of inertia of a motor
A technology of moment of inertia and measurement method, applied in the direction of measuring device, machine/structural component test, static/dynamic balance test, etc., can solve problems such as inaccurate measurement and inconvenient operation, and achieve accurate results and convenient detection Effect
Active Publication Date: 2021-11-05
苏州轻工电机厂有限公司
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[0004] The invention provides a method for measuring the moment of inertia of a motor, aiming to solve the problems of inconvenient operation and inaccurate measurement
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[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0046] On the test bench, the motor under test is coaxially connected with the torque sensor and the load motor through a coupling. When the load motor is used to drive the motor under test to accelerate rotation, some variables can be measured, such as driving torque, speed and Time, after analysis, the driving torque needs to overcome the resistance torque, which includes the wind resistance of the rotor, the friction resistance of the bearings at both ends of the rotor, the wind resistance of the coupling, and the friction resistance of the bearing on one side of the torque sensor, and the rest i...
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The present invention is applicable to the technical field of motor moment of inertia measurement, and provides a method for measuring the moment of inertia of a motor, by obtaining the first rotational speed at the first moment and the second rotational speed at the second moment when the load motor is driven by the first torque, and then Obtain the third rotational speed at the third moment and the fourth rotational speed at the fourth moment when the load motor is driven by the second torque, and then according to the motor motion equation and the no-load torque, the first torque, the first time, the second time, the first rotational speed and the second rotational speed to obtain the first moment of inertia of the motor under test, and then according to the motor equation of motion and the no-load torque, the second torque, The third moment, the fourth moment, the third rotational speed and the fourth rotational speed obtain the second moment of inertia of the motor under test, and finally obtain the third moment of inertia of the motor under test. The present invention has the advantages of convenient detection. , The characteristics of accurate results.
Description
technical field [0001] The invention belongs to the technical field of measuring the moment of inertia of a motor, and in particular relates to a method for measuring the moment of inertia of a motor. Background technique [0002] The commonly used method of measuring the moment of inertia has some inconveniences in the actual measurement: for example, the shape of the rotor is irregular and the density is not uniform; general laboratories do not have complete rotor disassembly tools, and the permanent magnet rotor is more or less affected by the earth's magnetic field; However, the falling weight method needs to fix the machine under test at a high level, and the accurate measurement of the falling time of the weight needs to be done manually or with additional equipment. [0003] The existing measurement method is inconvenient to operate and the measurement is not accurate. Contents of the invention [0004] The invention provides a method for measuring the moment of in...
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IPC IPC(8): G01M1/10
CPCG01M1/10
Inventor 宦文极罗刚
Owner 苏州轻工电机厂有限公司