Unicornai Posted February 18 Share Posted February 18 If I don't use a lead screw, can a direct compensation linear motor use this to compensate? Quote Link to comment Share on other sites More sharing options...
MoMo Posted February 19 Share Posted February 19 Of course, many of our customers who use linear motors use laser interferometer measurement data and the compensation table function to compensate the motors. Quote Link to comment Share on other sites More sharing options...
Unicornai Posted February 20 Author Share Posted February 20 18 hours ago, MoMo said: Of course, many of our customers who use linear motors use laser interferometer measurement data and the compensation table function to compensate the motors. Yesterday I tried the laser interferometer measurement, and the compensation value was entered into it, and it didn't feel like it was effective, and the overall trend did not change, can you tell me more details? Such as what to pay attention to something? Quote Link to comment Share on other sites More sharing options...
MoMo Posted February 20 Share Posted February 20 (edited) Usually, for motors whose position loop is controlled by PMAC, Motor[x].CompPos is used to correct the feedback position. For the application of position loop in the driver（EtherCat）, Motor[x].CompDesPos will be used to correct the command position. If your compensation table is effective, observe Motor[x].CompPos or Motor[x].CompDesPos. There should be a numerical change. If there is no change, it means that the compensation table function is not effective. The activation of the compensation table function is determined by Sys.CompEnable and the correct compensation table setting.The compensation table serial numbers must be used continuously and cannot be used at intervals. For detailed setting procedures, please refer to the manual in the attachment. Power PMAC 5-Day Training - December 2016.pdf Edited February 20 by MoMo Quote Link to comment Share on other sites More sharing options...
Unicornai Posted February 21 Author Share Posted February 21 12小时前，MoMo说： 通常，对于位置环路由 PMAC 控制的电机，Motor[x]。CompPos 用于校正反馈位置。用于在驱动器（EtherCat）中应用位置环路，电机[x]。CompDesPos 将用于校正命令位置。 如果您的补偿表有效，请观察 Motor[x]。CompPos 或 Motor[x]。CompDesPos.应该有一个数字变化。如果没有变化，则表示补偿表功能无效。 补偿表函数的激活由 Sys.CompEnable 和正确的补偿表设置确定。补偿表序列号必须连续使用，不能间隔使用。 有关详细的设置步骤，请参阅附件中的手册。 Hello, let me ask in detail, if I compensate for Actual Position - Outer and Inner loops and then my gap is a bit big and I need to compensate for the backlash, should I use the 0 meter to compensate for the Actual Position and the 1 meter to compensate for the backlash? Power PMAC 5 天培训 - 12 月 2016.pdf 日 9.43 兆字节 · 2下载 Quote Link to comment Share on other sites More sharing options...
MoMo Posted February 21 Share Posted February 21 If you are using a direct drive motor (linear motor), you do not need to compensate for backlash. In other words, the reverse error you measure in a laser interferometer cannot be compensated and is due to mechanical precision. The compensation table can only improve the absolute positioning accuracy of the motor, but cannot improve the repeated positioning accuracy. Quote Link to comment Share on other sites More sharing options...
Unicornai Posted February 21 Author Share Posted February 21 8分钟前，MoMo 说： 如果您使用的是直驱电机（直线电机），则无需补偿背隙。换句话说，您在激光干涉仪中测量的反向误差无法补偿，这是由于机械精度造成的。 补偿表只能提高电机的绝对定位精度，而不能提高重复定位精度。 我可以单独赔偿吗？Forward 单独补偿一张桌子？反转另一张桌子？但是我觉得没有办法改变行程，也就是说直线电机只能这样补偿？只有丝杠可以补偿间隙？谢谢 Quote Link to comment Share on other sites More sharing options...
MoMo Posted February 21 Share Posted February 21 Please use English or contact Omron in China for resolution. Quote Link to comment Share on other sites More sharing options...
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