The vibration control instrument is a key equipment in vibration measurement,which can output a sine signal of a certain frequency.The signal is amplified by a power amplifier to make the stand-ard vibration table vibrate at that frequency.The reference accelerometer on the table surface of the stand-ard vibration table collects the vibration signal of the vibration table and feeds it back to the vibration con-trol instrument,thus completing the closed-loop control of the vibration control instrument on the vibra-tion table.When measuring vibration instruments such as piezoelectric accelerometers,it is very impor-tant to use a vibration controller to control the standard vibration table to operate stably at a certain fre-quency and acceleration,and to display accurate and reliable acceleration values on the vibration con-troller.The article mainly analyzes the factors that easily affect the accuracy of vibration values in the process of controlling a standard vibration table with a vibration controller,and discusses how to improve the accuracy of vibration values.
vibration control instrumentreference accelerometerclosed loopstandard vibration ta-ble
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