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发表于 2018-7-20 12:08:54
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只有在没有负载或有外部反馈设备的情况下才能保证准确性。 数字液压缸的问题在于阀芯不能独立于误差移动。 负载将推动气缸通过压力增益带,直到力均衡。 压力增加面积有多大? 我的博世阀门的压力增益面积为4%。 如果阀芯移动2mm然后4%是80微米? 数字液压缸如何做得更好?
Accuracy can only be guaranteed if there is no load or there is an external feedback device. The problem with digital hydraulic cylinders is that the spool can not be moved indepently of the error. A load will push the cylinder back through the pressure gain band until forces equalize. How big is the pressure gain area? My Bosch valve has a pressure gain area of 4%. If the spool move 2mm then 4% is 80 microns? How does the digital hydraulic cylinder do better? |
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