钢板彩涂过程中张力控制系统的研究-控制理论与控制工程专业论文.docxVIP

广东工业大学1二学硕十学位论文Abstract 广东工业大学1二学硕十学位论文 Abstract By researching the fbatures of motor torque control and motor speed controI in the AC frequency conversion adj ustable—speed line of steel c010r coating，the paper analyze the construction of HanGang producing control system，presentthe methods of tension control system and construction of computer control system．Basing on modeling induction motor，the vector control improve motor’s dynamic characteristics． By decomposing the motor stator’s current， the induction motor have Instantaneous torque control characteristics as DC motor． Then the paper present the detail about tension control of steel coating line． By calculating no—load compensation current，weight compensation current， accumulator tension compensation current， dynamic torque compensation current，the total torque compensation current is gotten．In order to stable the tension of steel coating line，the paper present scheme of the loads balance of speed rollers and the adj ustment to accumulator in order to synchronize the s≯百ed of d翻!诧r吾nt se窘me卅． By analyzing the model of induction motor and overhang line of steel belt in the heater，the papef apply simple fhzzy in control system．Basing on fuzzmcation，knowledge base，fuzzy reasoning and defuzzification，fuzzy controller of oVerhang line of steel belt is designed．Because of many faults in simple fuzzy controllef， fuzzy controller with integration factor and fuzzy+PI dual mode controlIer is used and deeply studied．In the end of this thesis，a simulation study is made for overhang controller system of steel 1ine，the simulation demonstrates the benefits of using fUzzy controller is restraining better speed—adjust perfbrmance，reduce the vibrating of steel belt． KEY WoRDS： color coated steel；tension control；vector controI； current compensation；self-adaptiVe fuzzy contr01 ．n． 第一章绪论第一章绪论 第一章绪论 第一章绪论 1．1彩涂钢板及彩涂钢板生产线技术发展与现状 1．1．1彩色钢板简介 彩涂钢板是近50年来在国外发展很快的一种新型金属材料，其以冷 轧板、电镀锌或热镀锌板为基板，首先对基板表面进行脱脂，去除带钢 表面的轧制油脂及尘土污物，然后在干净的表面进行化学转化处理