摘要
针对电驱动机械式自动变速器(EMT)在换挡过程中转速主动同步的问题,该文提出基于西门子S7-200PLC的模糊PI控制方法。首先,通过在线采集大量的试验数据,进行偏差及偏差变化率分析,利用Matlab模糊工具箱进行隶属度函数的选择、模糊规则的制定,并进行系统测试获取模糊控制参数。再通过PLC编程语言实现模糊控制表的在线查询及PI控制器的设计。经EMT台架试验验证,基于模糊控制与PI控制相结合的控制系统能在响应时间及调节精度等方面有较好的表现。
Aiming at the problem of active speed synchronization in electric-drive mechanical transmission（EMT）,a fuzzy PI control method based on SIEMENS S7-200PLC is proposed. Firstly,a large number of test data collected on line,the deviation and deviation rate are analyzed,making use of Matlab fuzzy toolbox selection of membership function,fuzzy rules,and system testing to obtain fuzzy control parameters. Then the online inquiry of fuzzy control table and the design of PI controller are realized by PLC programming language. Through the verification of EMT platform,the control system based on fuzzy control and PI control can perform better in response time and adjustment accuracy.
出处
《自动化与仪表》
2017年第12期36-39,54,共5页
Automation & Instrumentation
基金
湖北省新能源智能汽车平台建设项目(20172d0002)
工信部"中国新能源汽车产品检测工况研究和开发"项目
关键词
电驱动机械式自动变速器
转速同步
可编程逻辑控制器
模糊控制
PI控制器
electric-drive mechanical transmission （EMT）
speed synchronization
programmable logic controller （PLC）
fuzzy control
PI controller
