砂轮在线动平衡装置是高速磨床上的重要组成部分。介绍了一种新型的气压液体式在线自动平衡系统，为该平衡系统提供了一种靶向控制策略。该控制策略在平衡装置执行操作前，已经准确定位不平衡量的大小和相位；平衡过程中，系统有确定目标的进行注气操作，系统振动幅值单调下降，平衡过程无错调现象。对注气操作的控制方案进行了定量分析，并选出了最优方案。实验结果表明，在多种转速下，该类平衡装置均可在15s内有效地降低系统的不平衡振动，且振幅下降比例均在90%以上。
Abstract
Active balancing device of grinding wheel is an important part for high-speed grinding machines. A new type of liquid-transfer active balancing device is proposed and a targeted control strategy is provided for the balancing device. In the strategy, amplitude and phase of imbalance are found before the balancing device works. During the process of balancing, the compressed air is injected to a determination target, the amplitude of vibration decreases monotonically and there is no dysregulated phenomenon. Quantitative analysis is done for several control paths and the optimal path is selected. The experiment result demonstrates that the unbalance response is reduced in 15s for three speed conditions and the decrease in amplitude is more than 90%.
关键词
磨床 /
自动平衡 /
气压液体 /
靶向控制
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Key words
grinding machine /
active balancing /
liquid transfer /
targeted control
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参考文献
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