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Measurement method of moment of inertia of separately excited DC (Direct Current) motor

A moment of inertia, DC motor technology, applied in the testing of machine/structural components, static/dynamic balance testing, measuring devices, etc., can solve problems such as unsuitable for engineering application on-site use, troublesome methods, etc., to meet the needs of debugging , Simple operation, strong engineering practicability

Active Publication Date: 2014-02-05
中国航空工业集团公司航空动力控制系统研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] These three methods are cumbersome and are only suitable for motor performance testing units or research units, not suitable for engineering application sites.

Method used

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  • Measurement method of moment of inertia of separately excited DC (Direct Current) motor
  • Measurement method of moment of inertia of separately excited DC (Direct Current) motor
  • Measurement method of moment of inertia of separately excited DC (Direct Current) motor

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Embodiment Construction

[0018] The present invention will be described in further detail below. see figure 1 , a method for measuring the moment of inertia of separately excited DC motors, based on the Siemens 6RA70 series full-digital DC speed control device (hereinafter referred to as the speed control device), is characterized in that the specific steps of measurement are as follows:

[0019] 1. Connect the motor under test: fix the motor under test on the measurement platform. When it is necessary to measure the total moment of inertia of the motor under load, it is also necessary to connect the motor under test to the load; then connect the armature, The excitation terminals are connected with the armature and excitation output terminals of the speed regulating device;

[0020] 2. Measure the acceleration time Ta: power on the speed control device, set the operation mode to "friction and moment of inertia compensation optimization" operation mode, and measure the acceleration of the measured mo...

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Abstract

The invention belongs to the motor parameter measurement technology, and relates to an improvement of a measurement method of the moment of inertia of a separately excited DC (Direct Current) motor based on a Siemens 6RA70 series all-digital DC speed control device. The measurement method is characterized by comprising the following steps that: a measured motor is connected; an acceleration time Ta is measured; and the moment of inertia J is calculated. The measurement method provided by the invention is simple and convenient to operate, is suitable for being used in engineering application sites, has strong engineering practicality, and meets the need of debugging of a DC transmission system.

Description

technical field [0001] The invention belongs to the motor parameter measurement technology and relates to the improvement of the method for measuring the moment of inertia of a separately excited DC motor. Background technique [0002] In the DC electric transmission control system, the moment of inertia of the DC motor and the gearbox has a great influence on the dynamic response time of the system, and the smaller the moment of inertia is required in the fast response system, the better. Since DC motor manufacturers do not have special equipment for testing the moment of inertia, they often cannot provide data on the actual moment of inertia, and can only provide theoretical design data. Some manufacturers can't even provide theoretical data. During the commissioning of the DC fly-by-wire system, it is necessary to know whether the actual inertia of the motor and gearbox is within the design requirements. If it is too large, it is necessary to add rotational inertia compe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M1/10
Inventor 闫小卫
Owner 中国航空工业集团公司航空动力控制系统研究所