Precise servo mechanism resonance frequency testing system and testing method

A servo mechanism and resonant frequency technology, which is applied in the field of test systems for the resonance frequency of precision servo mechanisms, can solve the problems of difficult connection, difficult to control the tapping force, low repeatability, etc., so as to reduce the requirements of mechanical structure and reduce technical pressure. , operating the programmatic effect

A servo mechanism and resonant frequency technology, which is applied in the field of test systems for the resonance frequency of precision servo mechanisms, can solve the problems of difficult connection, difficult to control the tapping force, low repeatability, etc., so as to reduce the requirements of mechanical structure and reduce technical pressure. , operating the programmatic effect

CN104034962AActive Publication Date: 2014-09-10XIDIAN UNIV
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  • Precise servo mechanism resonance frequency testing system and testing method
  • Precise servo mechanism resonance frequency testing system and testing method
  • Precise servo mechanism resonance frequency testing system and testing method

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Embodiment 2

[0068] The present invention also provides embodiment 2, adopts step method to test resonant frequency, comprises the following steps:

[0069]1) Initialize the system at first, set the motor driver 111 of the servo mechanism parameter tester 109 and the servo mechanism control parameter PID of the multi-axis motion control card 112 on the industrial computer 114;

[0070] 2) Then set the parameters of the excitation signal on the industrial computer, including the excitation signal S t (t) Amplitude V max , the excitation time t scan , where the excitation signal S in the step method t (t) Amplitude u rated is the rated voltage of the motor, and the excitation time is 100ms≤t scan ≤300ms;

[0071] 3) Setting keys for different position sensors on the sensor selection switch of the servo mechanism parameter tester; and selecting corresponding data transmission processing modules corresponding to different position sensors on the data conversion processing card;

[0072...

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Abstract

The invention discloses a precise servo mechanism resonance frequency 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 is one selected from a sweep frequency method, a step method, a white noise method or a Multitone method. Multiple kinds of excitation signals can be selected, errors due to different characteristics of different mechanisms can be reduced. The powerful software function of a micro computer and the graphical environment are used for research and development on the servo system resonance frequency tester, the operation is simple and 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 electromechanical systems, in particular to a test system and a test method for the resonant frequency of a precision servo mechanism that can be used in the field of electromechanical system test technology and precision measurement systems and can be used in the field of information processing. Background technique [0002] In a typical industrial control system equipment, the servo motor is connected to the actuator through a transmission mechanism with limited stability. The transfer function of the system often contains a zero point and a pair of conjugate poles, so it is easy to cause mechanical resonance. The influence of the load and the change of the input (output) signal may lead to the occurrence of the resonance phenomenon. [0003] Frequency characteristics are the response characteristics of a system to sinusoidal input signals of different frequencies. Like the transfer function, the frequency chara...

Claims

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Application Information

Patent Timeline
10 Sep 2014
Publication
CN104034962A
IPC
G01R23/02
Inventors
王卫东; 王和宁