Design of measurement and analysis system for gear's overall radial error

A new method is proposed to measure gear's overall radial error,whereby the gear meshes with standard gear with the theoretical ceutral distance and rolls,then the rotating angle is measured with round optical grating and the change of central distance is recorded.The measured data will be processed in computer after being filtered,then the overall radial error and overall tooth-to-tooth radial error will be calculated.Finally,the error curve is plotted,and measurement report is generated.The data filtering reduces interference,improving the accuracy of measurement.