【作者】 徐玲；

【导师】 徐保国；

【作者基本信息】 江南大学 ， 控制理论与控制工程， 2005， 硕士

【摘要】 伴随着计算机技术、控制技术和通信技术的发展,过程控制系统逐步由集散控制系统(DCS)发展到现场总线控制系统(FCS)。现场总线的工业过程智能自动化仪表和现场总线的开放自动化系统构成了新一代全开放式自动化控制系统的体系结构。本课题依托国家经贸委制定并公布的我国自动化仪表与系统行业“十五”规划及产业发展的重点领域:新一代主控系统及其综合自动化开发和产业化,主要包括现场总线控制系统和以工业计算机为基础的开发式控制系统。此外,课题还依托国家发展计划委员会公布的当前优先发展的高新技术产业:基于现场总线控制技术的全开放分散控制系统及智能仪表。本课题以轮胎的硫化过程为研究对象,针对轮胎的硫化工艺,设计了轮胎硫化现场总线控制系统。基于西门子公司的PROFIBUS现场总线,进行了系统的开发,并结合国产组态软件“组态王”进行了监控系统的开发。在化工工业中,其生产过程中涉及多变量、强耦合性、不确定性、非线性、信息不完全性、约束条件和大纯滞后等对象特征。在轮胎硫化过程中,硫化的温度压力是靠外加饱和蒸汽来实现的,常规的PID控制不能满足精度的要求,本课题针对这一问题设计了一个免疫PID控制器,有效提高了控制水平。此外,轮胎在硫化过程中,轮胎各部位的最终状态是由其硫化过程中的温度历程所决定的,但对于轮胎内部点的温度,在实际生产中是无法精确测量的,为了掌握硫化过程中的轮胎内部温度情况,本课题采用神经网络对轮胎内部温度点进行了预测,预测结果表明该方法具有可行性和有效性。更多还原

【Abstract】 With the development of computer,control technology and communication technology, theprocess control system is becoming from distributed control system(DCS) to fieldbus controlsystem . The new generation opening automation system structure is composed of industry processintelligent automation instrument and fieldbus opening control system .This question for discussion is based on automation instrument and system “the fifth” layout ofour country that the Economy Trade Committee established: the mew generation main controlsystem and the integration automation exploiture and industrialization . This layout mostlycomprises fieldbus control system and opening control system based on computer. Furthermore , thequestion for discussion is based on advanced original technology industry which is firstly developedof our country’s Development Plan committee: the mostly opening distributed control system andintelligent instrument based on fieldbus system. The research object of the question for discussionis vulcanization process, aim at the tyre vulcanization technics ,the task designs a tyrevulcanization fieldbus control system. Based on PROFIBUS of Simens Corporation , the taskexplores the main control system and watch control system by “KINVIEW” of our country . In chemistry industry, the process is multi-variable, heavy coupling ,uncertainy,nonlinear,information inadequacy, restriction condition and pure lag. During the tyrevulcanization process, ,the temperature and press depend on appending saturation steam to realize ,and the traditional PID control can not achieve the control precision , the task design an immunePID controller to this problem, and improves the control level. Furthermore, during the tyrevulcanization process , every place of the tyre finally state is determined by the temperature course.But for the tyre’s interior temperature can not be measured accurately in the practicality production.In order to know the tyre’s interior temperature during the vulcanization process, the task uses NNto forecast tyre’s interior temperature. The forecast result indicates that this method is feasible andeffective.更多还原