Title: The control system is designed for preventing the driven wheel of car skidding —which is based on CPLD of the step electrical engineering
Abstract
When car is driving, if the road surface is too shiny and smooth(such as snowy day, rainy day), the car start quickly or upgrade and so on, then the wheel will skid easily.
The thesis is designed according to the problem. According to the road surface and then it compares the speed of driving wheel with the speed of the driven wheel, the result will decide the size of the throttle and eliminate skidding in time and insure the car drives safely.
8031 single-chip is the main chip and INTEL27128AEPEOM which is program storage. The speed is measured by the photo-electricity sense organ of the speed. The liquid crystal shows the speed about driving and skidding. The arithmetic is figure PID.
For letting up the volume of the control-board and improving circuit performance. I try to use the CPLD technology. The function of deposition about 74LS373 and controller of the step electrical engineering are realized by a piece of CPLD.