高温高压流变仪围压控制系统设计  

Design of HTHP Rheometer Confining Pressure Control System

作　　者：饶建华[1] 蔡诗龙 徐许林 

机构地区：[1]中国地质大学机械与电子信息学院,湖北武汉430074 [2]湖北九洲数控机床有限责任公司,湖北孝感432100

出　　处：《机械设计与制造》2017年第11期5-8,12,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金委员会资助项目(41227001);国家科技支撑计划课题(2015BAF32B03)

摘　　要：针对在高温高压流变仪围压控制中传统PID算法存在改变目标速率时会产生超调的缺点,提出一种基于基本比例输出的PID控制算法控制加压和减压过程,并通过理论分析了算法的可行性。依据高温高压流变仪围压系统的特性,在实际实验的基础上建立了系统加压和减压的数学模型,用Simulink工具箱对加压和减压过程进行了仿真,并在高温高压流变仪上对控制算法进行了测试,仿真和测试结果表明基于基本比例输出型PID控制算法跟踪效果好,响应速度快,满足控制要求。The algorithm based on basic proportional output PID was proposed to control the the pressurization and depressurization progress of HTHP rheometer confining pressure, because the traditional PID had the disadvantage of overshoot for changing the speed of target and the feasibility of the algorithm was proved by theoretical analysis. According to the characteristics of HTHP rheometer confining pressure system, the system mathematical model of pressurization and depressurization was built based on practical experiments, and the progress was implemented with Simulink toolbox and tested on HTHP rheometer, the simulation and test results show that the algorithm based on basic proportional output PID meets the control requirements because of its good tracking effect and rapid response.

关 键 词：流变仪 围压 基本比例输出 PID 仿真 测试 

分 类 号：TH16[机械工程—机械制造及自动化] TP273[自动化与计算机技术—检测技术与自动化装置]