Research And Study Of Diditalized Cam

Cam has an abroad application in the modern industry, but because of its inherent defects, it has been limited in a lot of automatic mechanism. Digitized Cam mechanism has many characteristics, such as high precision, good flexible processing and convenient control. Also, it can make followers achieve kinematic rule by software programming. So, it can replace Mechanical Cam in a good many occasions.This subject research a Digitized Cam controlled by MCU. This system use AT89C52 MCU as its core. It control stepping motor by compile program and use stepping motor driving precision lead screw as an actuating mechanism, which make rotary movement of the stepping motor transform into linear movement of the followers. At the same time, photoelectric encoder detect the turn angle of output axis and make turn angle signal feed back to the MCU which can adjust the output of movement. Then it can simulate high precision curve of the Cam movement. Also, it can make many Cam curves stored in external memorizer of the MCU which make the switchover between different processing curves very convenient.This text creates control functional equation of the Digitized Cam mechanism at the base of analyzing the Mechanical Cam curve. And carries out detailed calculation, creates date form which make quadratic polynomial Cam curve as an example. At last establish movement method of this system on that entire base. This text also analysis control circuit of this system and has finished detailed design under'proteus'software such as stepper motor driving circuit, photoelectric encoder circuit, keyboard input with LED display circuit and system warning circuit etc. Also add anti-interference circuit design based on improving the system, so as to ensure reliable operation of this system..