The applied study of high accuracy digital velocity measurement on photoelectric encoder
Fan Duo-wan · Automation and Instrumentation · 2010
This paper introduces the problem in the modified M/T method of digital velocity measurement,analyzes the mainly reason is that processor consume time is not calculated,to increase calculated error.The goal of this research is search a method to decrease error and improve its stability.The approach used the high frequency clock pulse frequency division method.It is a result that improved accuracy and improved speed regulator stability.use of software debugging in the real physical system with a load to achieve a high precision digital speed,and provide a guarantee for AC motor speed control system.