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摘要：
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以气门镦粗加工工艺为研究对象,分析了加工过程中的加热电流、镦粗压力、镦粗缸和砧子缸运动速度、加工材料这几个重要参数的过程控制对气门成形的具体影响,提出了每个参数的控制环的设计,以消除折叠、过热、过烧和"失肉"等缺陷。针对传统加工工艺重要参数过程不可调节,参数值不能保存等缺陷和不足,以及工艺参数较多,部分参数之间相关性强,调整一个参数,另外的参数也须改变的难以匹配问题,采用了迭代学习的算法实现控制模块。开发了基于VxWorks嵌入式的控制系统硬件和软件。改变了传统的依靠现场工人操作水平和经验的控制模式,提高了气门镦件的质量和生产效率。系统具有较强鲁棒性,符合工业综合控制向智能化发展的方向。
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Taking the air valve upsetting processing technique as the research object,a control loop design method was presented base on analyzing the concrete effect of processing key parameters,such as the heat current,the system pressure,the speed and the rough materials to the valve during the process control in order to avoid the traditional processing craft's flaws including the valve pucker,over-heated,over-burned,and "lost-materials",and design the key parameters loop control system.The iteractive learning arithmetic was adopted to realize the module.The hardware and software based on the VxWorks operating system.were developed.The system has changed the traditional control mode which adjusts the process parameters with manual hand,and raiseds the productivity and the valve quality.The system has a strong robotic capability,which is in accordance with the development direction of intelligentized industrial integrated control.
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基金项目：
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广东省自然科学基金资助项目(990035)
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作者简介：
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参考文献：
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[1]陈健,张忠夫,孙友松,等.气门电镦机计算机控制系统研制.机床与液压,2004,(6):35 38.
[2]邝卫华,阮锋,肖小亭,等.气门电镦成形的工艺分析与控制策略.机床与液压,2004,(5):153 154.
[3]肖小亭,章争荣,孙友松,等,电镦成形中产品缺陷原因分析与质量控制策略.热加工工艺,2001,(1):45 48.
[4]石成英,林辉,迭代学习控制技术的原理、算法及应用.机床与液压,2004,9:80 84.
[5]Wind River.Vx Works Programmer's Guide 5.4[M].北京:清华大学出版社,2003.
[6]孔祥营,柏桂枝.嵌入式实时操作系统VxWorks及其开发环境Tornado[M].北京:中国电力出版社,2002.
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