采用SN8P2704A控制的陶芯压注机压力控制系统设计的研究
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摘要
在熔模精密铸造中,陶芯压注机为其不可或缺的核心设备。对陶芯压注机的压力进行合理的调控可以为提高熔模精密铸造产品的质量提供有效的保障。对此,论文提出了采用SN8P2704A控制的陶芯压注机压力控制系统设计的研究。首先,通过对陶芯压注机的主要组成以及工作过程进行分析,明确了陶芯压注机对压力的控制要求,以及实现压力控制时需要的控制对象。然后,根据压力的控制要求以及控制对象设计了陶芯压注机压力控制系统的整体架构。接着利用SN8P2704A作为中央控制器设计了硬件电路,以神经网络改进的PID算法作为控制策略实现了该文所设计的压力控制系统。最后,通过实验分析显示,论文所设计的压力控制系统能对压力进行快速、准确的调控,能够满足陶芯压注机工作过程中所需要的压力控制需求。
In the process of precision-investment casting,ceramic core injection machine is the indispensable core equipment. The reasonable control of the pressure of the ceramic core injection machine can provide an effective guarantee for improvingthe quality of the precision-investment casting product. So the research on the design of pressure control system based onSN8 P2704 A for ceramic core injection machine is proposed in this paper. First of all,through the analysis of the main compositionand the working process of the ceramic core injection machine,the control requirements of the ceramic core injection machine to thepressure and the control object needed to realize the pressure control are defined. Then,according to the control requirements of thepressure and the control object,the overall structure of the pressure control system of the core injection machine is designed. Then,using SN8 P2704 A as the central controller,the hardware circuit is designed,and the improved PID algorithm based on neural net-work is used as the control strategy,the pressure control system designed in this paper is implemented. Finally,the experimentalanalysis shows that the pressure control system designed in this paper can control the pressure quickly and accurately,and it can meet the pressure control requirements in the working process of the injection molding machine.
In the process of precision-investment casting,ceramic core injection machine is the indispensable core equipment. The reasonable control of the pressure of the ceramic core injection machine can provide an effective guarantee for improvingthe quality of the precision-investment casting product. So the research on the design of pressure control system based onSN8 P2704 A for ceramic core injection machine is proposed in this paper. First of all,through the analysis of the main compositionand the working process of the ceramic core injection machine,the control requirements of the ceramic core injection machine to thepressure and the control object needed to realize the pressure control are defined. Then,according to the control requirements of thepressure and the control object,the overall structure of the pressure control system of the core injection machine is designed. Then,using SN8 P2704 A as the central controller,the hardware circuit is designed,and the improved PID algorithm based on neural net-work is used as the control strategy,the pressure control system designed in this paper is implemented. Finally,the experimentalanalysis shows that the pressure control system designed in this paper can control the pressure quickly and accurately,and it can meet the pressure control requirements in the working process of the injection molding machine.
引文
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[2]郑伦川,刘贯军.基于ProCast模拟的铸钢件熔模铸造工艺优化[J].铸造技术,2016,8(37):1776-1778.
[3]徐晖.模糊PID控制在压注机电液控制系统的应用研究[D].哈尔滨:哈尔滨工业大学,2008.
[4]周起华,徐本洲,聂伯勋.模糊PID复合控制在压注机电液伺服控制系统中的应用[J].机床与液压,2006,5(21):102-104.
[5]姚喆.模糊自适应控制在压注机电液控制系统切换中应用研究[D].哈尔滨:哈尔滨工业大学,2010.
[6]顾国红,曹腊梅.熔模铸造空心叶片用陶瓷型芯的发展[J].铸造技术,2002,2(23):801-83.
[7]庄绪雷,安庆贺,史兴利.水溶性陶瓷芯在航空铝合金熔模铸造中的应用[J].中国铸造装备与技术,2016,1(32):52-53.
[8]徐秀萍. 50T陶芯压注机液压控制系统设计与仿真研究[D].秦皇岛:燕山大学,2014.
[9]谢芳,杨红果.数字PID改进算法的分析与实现[J].焦作师范高等专科学校学报,2010,2(26):77-80.
[10]许楠,刘桂阳,徐耀群.带有高斯扰动的混沌神经网络及应用[J].智能系统学报,2014,4(9):444-448.
[11]胡郁.基于BP神经网络的TA15钛合金流变性能的预测与评估[J].铸造技术,2014,4(35):672-675.
[12]杨玉良.基于神经网络和PID控制的钢管热处理工艺[J].铸造技术,2013,7(34):833-835.
[13]潘华彬.模糊自整定PID控制在压注机电液控制系统中的应用研究[D].哈尔滨:哈尔滨工业大学,2011.