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Precise servo mechanism friction torque testing system and testing method

A technology of servo mechanism and friction torque, which is applied in the field of precision testing of electromechanical systems, can solve the problems of low measurement accuracy and large randomness, and achieve the effects of high precision, programmed operation, and reduced mechanical structure requirements

Active Publication Date: 2014-09-10
XIDIAN UNIV
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Problems solved by technology

[0004] At present, the research on the measurement of the friction torque of the servo mechanism is mostly carried out by manual measurement or using special friction torque measurement equipment. Manual measurement generally adopts the method of hanging weights. Although the measurement method is simple, the measurement accuracy is low and random. The friction torque test equipment cannot complete the measurement in a specific narrow space

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  • Precise servo mechanism friction torque testing system and testing method
  • Precise servo mechanism friction torque testing system and testing method
  • Precise servo mechanism friction torque testing system and testing method

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Embodiment Construction

[0063] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0064] The following combination figure 1 The structure of the present invention is introduced, which is a system capable of testing the friction torque of a precision single servo mechanism. The testing system adopts a modular design and can be roughly divided into three parts, including the measured precision servo mechanism 101, the servo mechanism parameter tester 109 and the industrial computer 114 equipped with human-computer interaction software.

[0065] Wherein, the measured precision servomechanism 101 includes a base 108 supported by a frame fixing shaft 103, and a servo motor 105 is arranged on the base 108, and the servo motor 105 is engaged with a position sensor 107 through a transmission reduction gear set 104, and the position sensor 107 is connected to a load The disk 102 ; the servo motor 105 is connected with the servo mechanism parameter tester 1...

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Abstract

The invention discloses a precise servo mechanism friction torque testing system and a testing method. The system comprises a tested precise servo mechanism, a servo mechanism parameter tester and a data processing display terminal industrial control computer. The tested precise servo mechanism achieves a system with the mechanical system position, the speed or acceleration controlled in a closed loop control mode. The testing method comprises steps of testing static friction torque and testing dynamic friction torque. The servo motor serves as an execution element and is connected with an execution mechanism via transmission machinery with limited stability. Driving of the servo driver on the motor adopts torque, speed and position three control modes. Acquisition processing on the signals can be realized via a servo mechanism motion control card and the signals can be uploaded to an upper computer system. The servo mechanism friction torque testing method is simple and convenient, operation is programmed, the cost performance is high, and demands of scientific research and engineering design can be better met.

Description

technical field [0001] The invention belongs to the field of precision testing of electromechanical systems, in particular to a testing system and testing method for friction torque of precision servo mechanisms that can be used as testing technology of electromechanical systems and servo control systems of precision turntables. Background technique [0002] The precision servo mechanism is a complex electromechanical system. During the assembly process, it will be disturbed by factors such as uneven processing technology and processing quality. These disturbances will affect the control performance of the servo system in the form of friction torque. Its existence not only affects the accuracy of the system, but also causes fluctuations and errors in the precision servo system, causing the system to appear low-speed crawling and dead-zone nonlinearity, reducing resolution and repetition rate and causing steady-state errors of the system. More importantly, in the process of m...

Claims

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Application Information

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IPC IPC(8): G01L3/00
Inventor 马伯渊王卫东王和宁刘颖莹李建文
Owner XIDIAN UNIV
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