改进PID算法控制下的低压铸造液面加压控制系统设计  

Design of Liquid Level Pressure Control System in Low Pressure Casting Based on Improved PID Algorithm

作　　者：文晓娟[1] 岳丽敏[1] 肖静[2] 

机构地区：[1]郑州铁路职业技术学院机电工程系,河南郑州450052 [2]九江学院机械与材料工程学院,江西九江332005

出　　处：《铸造技术》2017年第7期1745-1748,共4页Foundry Technology

基　　金：河南省科技攻关资助项目(092102210116)

摘　　要：通过对低压铸造工艺及液面加压要求进行分析,提出了改进PID算法控制下的低压铸造液面加压控制系统设计的研究。根据低压铸造液面加压控制的要求对液面加压控制系统进行了总体方案的设计,在硬件上采用PIC16F737处理器作为主控器,GB-3000A型传感器进行液面压力采集,在软件上采用粒子群算法对PID算法进行改进,并以此改进的PID算法作为软件核心。最后,对设计的低压铸造液面加压控制系统进行了仿真实验分析,结果表明,所设计的液面加压控制系统能对低压铸造液面加压过程的压力值进行实时精确的控制。Through the analysis of the low pressure casting process and the level pressure requirements, a design of low pressure casting liquid level pressure control system based on improved PID algorithm was presented. According to the requirement of the low pressure casting liquid level, the overall scheme of the control system was designed, in the hardware, taking PIC16F737 processor as the main controller, and using GB-3000A sensor to collect the pressure of the liquid level, in the sottware, using particle swarm algorithm to improve the PID algorithm, and the improved PID algorithm as the core of the software. The simulation result shows that the surface pressure control system can accurately and real-time control the liquid level pressure value in low pressure casting.

关 键 词：低压铸造 液面加压控制系统 PIC16F737 PID算法 

分 类 号：TG233.1[金属学及工艺—铸造]