In the rolling procedure of cross wedge rolling,the technological parameters and instantaneous rotational speed ratio of workpiece and roller have intimate and complicated relationship.

Based on analysis of the nature of cicq modle,propose a new conception-instant speedup and effective speedup,then point out that instant speedup is a resource in cicq modle.

Non-contact measuring for instantaneous velocity of solid surface in industrial production;

Analyzing the errors in instantaneous velocity measured with photogate timer

The Research on the Application of Fault Diagnosis of Diesel Engine Using Instantaneous Speed and Torsional Vibration Signals;

The measuring & diagnosing instrument of the Stirling engine based on instantaneous speed is introduced.

Through measuring the voltage variation of the speed sensor on the WD615 diesel engine,the instantaneous speed signal can be gained and is processed with the sliding mean method of digital filter.