Research And Design Of A Kind Of New Intelligent Controller

This dissertation presents a design idea and method of a kind of new intelligent controller that is named a nine-points controller. On the one hand, a control tactic, steady-state performance and dynamic Performance of the kind of intelligent controller is researched theoretically; On the other hand, a temperature controller is designed based on this control tactic in order to implement control to temperature of electrical oven. This controller has several advantages: for example, its control tactic is simple; a design of its hardware and software is also simple.A control system is researched theoretically by means of simulation and the simulation tool is MATLAB software. Main research is as follows: a kind of control idea of a nine-points controller is presented based on a basic logic controller and control tactic is analyzed based on phase-plane method; several output forms are discussed on the ground of control request; it is confirmed basically that performance of controller is affected by parameters of the controller based on phase-plane analysis; steady-state performance is researched to confirm parameters of the controller how to affect steady-state performance of system; dynamic performance is researched to confirm parameters of the controller how to affect dynamic performance of system; at last, a method is given confirming parameters of the controller on the ground of steady-state and dynamic performance.An electrical oven temperature controller is designed based on control tactic of nine-points controller. Hardware design includes main controller module, input signal collection and transformation module, output signal module, man-machine interface module and so on. The main controller is an 8 bits Single Chip Microcomputer 80C552 from PHILIPS company. Temperature signals are collected by a thermocouple.Output module is actually temperature control module and temperature is control by a two-way SCR. Man-machine interface is designed for keyboard and display. Software design adopts module design method.Main modules are as follows: control algorithm module, main control program module, input signal collection module, output signal module and man-machine interface module and so on.