| Cascade control system is a common control system and is used in control process widely. Based on the comprehension of the conventional cascade control system, Embedded test control system application at the testing machine are researched in this paper, the content of this paper is:Chapter 1 Narrates the application background and current situation of the testingmachine system. Then puts forward the application of the embeddedsystem at the testing machines system. Chapter 2 Analyses the composition of every parts of the testing machine and itsoperation principle, and analyses the dynamic responses of themtheoretically. Put forwards the method which use PID in main loop and Pin subloop. Chapter 3 Narrates the selection of all parts of the test and control system of thetesting machines and their schematic diagram. Analyses the interferencesource and solution to the system while routing. Chapter 4 Mainly discusses programming with KEIL C51 at embedded systemafter accomplishing of hardware. This method meets the requirement ofconstant loading speed. Chapter 5 This chapter discusses the communication between the embedded systemand PC. And defined the protocol. Develop the communicationprocedure of the embedded system and PC. Chapter 6 This chapter discusses the debugging on the software and hardware ofthe testing machines system. Adjust the parameter of two loops.Analyzed the result of the test at last. Chapter 7 Summarizes what have done in the project development, and putsforward some deficient. And the improvement in the future.This paper's characteristic is paying attention to practicability, uniting the theory and practice into integrity. Realize the control on the testing machine with the low-priced embedded system. |