Calibration method of contract transducer for absolute measurement of nonlinearity parameter, apparatus for calibration by using the method, and method and apparatus for absolute measurement of the parameter by using the method

摘要

The present invention relates to a calibration method that can easily and accurately specify the characteristics of a transmission unit and to accurately specify a nonlinear parameter, a calibration apparatus to which the calibration method is applied, and a nonlinear parameter measurement method and apparatus to which the calibration method is applied. It is about. The present invention is to obtain the power transfer function and the current-displacement transfer function of the transfer unit by measuring the input current input to the inspection target and the output current output through the transfer unit is reflected by the input current inside the inspection target. The present invention relates to a delivery calibration method and apparatus for measuring non-linear parameters. The present invention calculates the power transfer function and the current-displacement transfer function of the transfer unit, and after measuring the output current passing through the test object, obtains the absolute displacement amplitude of the harmonic components, thereby measuring the nonlinear parameters. It relates to a non-linear parameter measurement method and apparatus that can be.