1、 温度温度控制控制系统的研究与设计系统的研究与设计 摘摘要要：设计一个利用 8086PC 机实现多台电阻炉温度的自动巡回检测 控制系统该系统以 8086 为基础，以并行 I/O 接口 8255A 为核心， 并配以适当的外围接口电路，实现对电阻炉温度自动检测与控制.设 计了一种过零检测电路， 利用硬件方法实现普通双向可控硅的同步过 零触发从而实现功率可调该控制系统具有电路简单、功能强、使用 方便、测量控制精度高、工作稳定可靠、性价比高等优点控制采用 PID 数字增量型控制算法，并选取合理最优的参数设置。系统控制程 序则采用了模块化设计结构，主要包括主程序、中断服务子程序、控 制算法子程序等。 A
2、bstract: In this article，a new temperature control system of resistance furnace is designed ,which realizes circuit check ,monitor and control of temperature of the multiple resistance furnaces. It is based on parallel interface 8255A chap and 8086 chap and combined with suitable peripheral circuit.
3、 This control system realizes zero - crossing detecting circuit and synchronous zero - crossing trigger of an ordinary bi - directional SCRof which the power output is adjustable. This system can measure temperature accurately and save energy. It is also reliable and practical.The mature algorithm o
4、f variable speed integral separation PID has been adopted in control rule, and the parameter of control rule is used optimally by the simulation analysis in computer. The control of system has adopted the module progxam configuration, it consists of the main program, interrupt service subroutine and control algorithm subroutine, etc. 关键词关键词：PID 算法；自动控制；温度控制; 热电偶测温; 模块化设计 key words：Algorithm of PID ;Auto control ;Temperature control; Thermocouple temperature measurement;Module program desig
