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Servo driver bandwidth testing platform and method

A servo drive, bandwidth testing technology, applied in the direction of instruments, measuring electricity, measuring devices, etc., can solve the problems of judgment error, deviation, low test accuracy, etc., and achieve the effect of meeting test requirements, high degree of automation, and high test accuracy

Active Publication Date: 2015-04-01
NINGBO HIRDEN IND CONTROL SYST
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AI Technical Summary

Problems solved by technology

[0004] The problem with the existing servo drive bandwidth test platform is that the system is complex and requires more test equipment; the testable bandwidth of the system is affected by the response speed of the speed sensor to a certain extent, which may cause a certain deviation; the waveform is measured by an oscilloscope In comparison, there are human judgment errors, and the test accuracy is not high

Method used

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  • Servo driver bandwidth testing platform and method
  • Servo driver bandwidth testing platform and method

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Embodiment

[0039] like figure 1 , figure 2 As shown, a servo driver bandwidth test platform includes a power interface 13, a signal generation and detection device 1, a servo driver 2, a motor 3 and a circuit breaker 5, the power interface 13 is connected to a three-phase AC 220V mains, The main power supply is respectively provided for the signal generation and detection device 1 and the servo driver 2. The circuit breaker 5 can protect the equipment and the circuit. The servo driver 2 is connected to the motor 3, and the photoelectric encoder 4 is arranged on the motor 3. The output terminals of the photoelectric encoder 4 are respectively connected with the photoelectric encoder signal input interface CN1 of the signal generation and detection device 1 and the photoelectric encoder signal input interface CN3 of the servo driver 2 .

[0040] The signal generation and detection device comprises a main control chip DSP, a single-phase rectification module 17, a photoelectric encoder si...

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Abstract

The invention provides a servo driver bandwidth testing platform which comprises a signal generation and detection device, a servo driver, a motor and an encoder. The signal generation and detection device is connected with the servo driver and used for sending a sine wave velocity command signal to the servo driver. The servo driver is connected with the motor. The signal generation and detection device and the servo driver are both connected with the encoder. The testing platform is simple in structure, high in velocity feedback signal response speed, high in automation degree and free of artificial judgment errors. The invention further provides a servo driver bandwidth testing method. According to the method, the signal generation and detection device automatically sends the sine wave velocity command signal, automatically recognizes and generates a velocity feedback signal through a pulse signal fed back by the encoder, automatically compares the waveform of the velocity feedback signal with the waveform of the sine wave velocity command signal and automatically displays a bandwidth testing result.

Description

technical field [0001] The invention relates to a servo driver bandwidth test platform and a test method thereof. Background technique [0002] According to the requirements of GB / T 16439-2009 5.16 of "General Technical Conditions for AC Servo Systems", the test method for the bandwidth of the servo drive is that when the servo drive is working in the speed loop mode, input a sine wave speed command, and its amplitude is the rated speed command 0.01 times the value, the frequency is gradually increased from 1Hz, and the corresponding speed curve of the motor is recorded. With the increase of the frequency of the command value, the amplitude of the waveform curve of the actual speed of the motor relative to the sine wave speed command waveform curve gradually decreases. When the amplitude When it is reduced to 0.707 of the command value, the corresponding frequency is the bandwidth of the servo drive, and the bandwidth stipulated in GB / T 16439-2009 5.16 is actually the bandwi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 王奇峰严志桥陈腾飞
Owner NINGBO HIRDEN IND CONTROL SYST
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