注排液型砂轮平衡装置控制策略与实验研究

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摘要为有效地解决砂轮失衡造成的磨床振动问题，介绍了一种新的注排液型砂轮平衡装置，为该平衡装置提供了一种液体控制策略，包括初次平衡进程和相位注液控制进程两部分。初次平衡进程根据系统初始值进行动平衡计算向平衡装置内注射液体，快速地将不平衡量降低到一个很小的值；相位注液控制进程通过设定目标振动值，根据砂轮失衡量的相位信息选择相应的注射腔，采用模糊PID控制器控制电磁阀进行多次微量注液，将不平衡量维持在一个很低的水平。砂轮动平衡实验结果表明，转速为2700 r/min时，采用此策略的注排液型平衡装置可以将不平衡振动快速、有效地降低到一个很低的水平，砂轮失衡造成的振动下降达89%，验证了提出策略的可行性和有效性。

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关键词 ：砂轮, 自动平衡, 注排液型, 控制策略

Abstract：A new online balancing device of liquid injection and discharge type grinding wheel was introduced to reduce vibration caused by unbalance of grinding wheel.A new control strategy including initial balance process and phase liquid injection control one was proposed.In initial balance process, dynamic balance calculation was performed according to the system’s initial value, and some liquid was injected into the balancing device to rapidly reduce unbalance to a very small value.In phase liquid injection control process, a target vibration value was set up, phase information of grinding wheel’s unbalance was used to choose the corresponding injection chamber, and the electromagnetic valve was controlled using a fuzzy-PID controller to do micro-injection many times, and make unbalance value keep a very low level.Grinding wheel dynamic balance test results showed that the vibration caused by grinding wheel unbalance can be reduced by 88% at 2 700 r/min, the feasibility and effectiveness of the proposed strategy is verified.

Key words： Grinding wheel Active online balance Liquid injection and dripping Control strategy

收稿日期: 2018-01-04 出版日期: 2019-07-28

引用本文:

张西宁、刘旭、张雯雯、夏心锐. 注排液型砂轮平衡装置控制策略与实验研究[J]. 振动与冲击, 2019, 38(15): 223-230.
ZHANG Xining, LIU Xu, ZHANG Wenwen, XIA Xinrui. Control strategy and tests of balancing device for liquid injection and discharge type grinding wheel. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(15): 223-230.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2019/V38/I15/223

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