热磨机磨片间隙电液比例自动控制系统的设计
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摘要
通过对热磨机磨片间隙的控制需求和调整方式的分析,运用电液比例控制技术设计了磨片间隙电液比例自动控制系统的结构,说明了系统对磨片间隙的自动控制原理及对磨片磨损的补偿控制原理,得出了该系统的开环传递函数。并参考国产某型热磨机的结构与工作参数建立了系统的数学模型,对系统的控制性能进行了分析,证实了磨片间隙电液比例自动控制系统的性能符合热磨机对磨片间隙控制的需求。
By analyzing the control requirements and adjustment methods of the grinding gap of refiner,the structure of the automatic control system of the grinding gap is designed by using the electro-hydraulic proportional control technology. The principle of automatic control of the grinding gap and the compensation control principle of the wear of the grinding are illustrated,and the open loop transfer function of the system is obtained. According to the structure and working parameters of a domestic refiner,the mathematic model of the system is established,and the control performance of the system is analyzed. It is proved that the system meets the control requirements.
By analyzing the control requirements and adjustment methods of the grinding gap of refiner,the structure of the automatic control system of the grinding gap is designed by using the electro-hydraulic proportional control technology. The principle of automatic control of the grinding gap and the compensation control principle of the wear of the grinding are illustrated,and the open loop transfer function of the system is obtained. According to the structure and working parameters of a domestic refiner,the mathematic model of the system is established,and the control performance of the system is analyzed. It is proved that the system meets the control requirements.
引文
[1] 曹利亚,王宝金,沈毅,等.热磨机自动控制技术的发展现状与趋势[J].木材加工机械,2014,25(6):50-53.
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[4] 王宝金.热磨机磨盘实际间隙精确测量与主轴运行状态监测的研究[D].南京:南京林业大学,2004.
[5] 陈光伟.热磨法磨片纤维分离机理的模型分析与实验研究[D].哈尔滨:东北林业大学,2012.
[6] CHEN G W, LIU Y J, HUA J, et al. Study on the principle and system design of refiner grinding gap electro-hydraulic servo controlling[J]. China Forest Products Industry,2015,42(3):14-17.
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[9] 刘阳君.热磨机磨片间隙电液伺服控制系统的设计研究[D].哈尔滨:东北林业大学,2015.
[10] 李宁.62英寸热磨机主轴轴向支撑设计与理论研究[D].哈尔滨:东北林业大学,2014.
[11] 吴江,潘东杰,黄列群,等.我国热磨机磨片的研究应用及发展[J].铸造技术,2015,36(10):2443-2447.
[12] 虞红志.电液比例位置控制系统设计[D].上海:上海交通大学,2011.
[13] 吴军强.基于电液比例的液压机压力闭环控制研究[D].成都:西华大学,2011.
[14] 宋锦春.电液比例控制技术[M].北京:冶金工业出版社,2014.
[15] 闻邦椿.机械设计手册单行本—液压传动与控制[M].北京:机械工业出版社,2014.
[2] 王艳萍,朱芳.动、静磨片盘的间隙在热磨机上的重要性[J].林产工业,2006,33(4):41-42.
[3] AYRILMIS N, BENTHIEN J T, OHLMEYER M. Effect of wood species, digester conditions, and defibrator disc distance on wettability of fiberboard[J]. Journal of Wood Science,2017,63(3):1-5.
[4] 王宝金.热磨机磨盘实际间隙精确测量与主轴运行状态监测的研究[D].南京:南京林业大学,2004.
[5] 陈光伟.热磨法磨片纤维分离机理的模型分析与实验研究[D].哈尔滨:东北林业大学,2012.
[6] CHEN G W, LIU Y J, HUA J, et al. Study on the principle and system design of refiner grinding gap electro-hydraulic servo controlling[J]. China Forest Products Industry,2015,42(3):14-17.
[7] 牛治军,王宝金,俞敏.热磨机的研究现状与发展趋势[J].林业机械与木工设备,2012,40(12):8-13.
[8] 王宝金.热磨机磨盘真实间隙非接触测量的研究[J].林业机械与木工设备,2004,32(6):12-15.
[9] 刘阳君.热磨机磨片间隙电液伺服控制系统的设计研究[D].哈尔滨:东北林业大学,2015.
[10] 李宁.62英寸热磨机主轴轴向支撑设计与理论研究[D].哈尔滨:东北林业大学,2014.
[11] 吴江,潘东杰,黄列群,等.我国热磨机磨片的研究应用及发展[J].铸造技术,2015,36(10):2443-2447.
[12] 虞红志.电液比例位置控制系统设计[D].上海:上海交通大学,2011.
[13] 吴军强.基于电液比例的液压机压力闭环控制研究[D].成都:西华大学,2011.
[14] 宋锦春.电液比例控制技术[M].北京:冶金工业出版社,2014.
[15] 闻邦椿.机械设计手册单行本—液压传动与控制[M].北京:机械工业出版社,2014.