Methods for dealing with 3 common displacement problems of universal testing machines

The displacement detection of universal testing machines is a basic data, but problems often occur in the displacement detection process. For the handling of these problems, Hengsi Shanda provides you with the following 3 points:

1. Check the system settings of the universal tester

The display of the detector's stroke is only ±10mm,Under normal circumstances, it should be ±50mm,Thinking that the system settings present a problem,Need to set the system again.From the new setting of the actuator's stroke is ±50mmafter,The display value on the task station's dashboard is still inaccurate,Therefore, I think that only the system is positioned and moved from the new standard,Only then can this problem be dealt with

2. Check the displacement sensor of the universal test machine

Since the electronic universal testing machine system is a closed loop system,Determine which part of the system has a bad problem,First, disconnect the circuit in the system,Make the system an open loop system.If the sensor signal is normal,Response signal of displacement sensor must be disconnected,Make the system open loop.At this time,Announce a section of the actuator moving signal from the mission station,Then measure the sensor response value,After repeated several times,When the sensor's reaction data is measured as a linear transformation line,Confirm that the sensor is normal

3. Check the Experimental Machine Expansion Unit

After removing the problem of displacement sensor,Check if the amplifier unit is normal.Disconnect the output signal of the expander unit first.Remove output wiring,Then, add a DC input signal to the amplifier unit through the task station.,And measure the output status of the amplifier unit,After repeated several times,The output signal of the measured amplifier unit changes linearly,To determine that the amplifier unit is normal.

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