目前工具機的發展趨勢，以達到高速高精之切削加工為目標，然而在大行程之運動上，旋轉馬達搭配滾珠螺桿系統已無法達到高速高精度之需求，因此具直接驅動之線型馬達，為達到高速高精度運動之重要致動器。本文所用之實驗設備為龍門型架構工具機，因此單一運動軸（Y軸）需由互相平行之線型馬達驅動，因此Y軸之兩線型馬達同步運動控制為極重要之技術。
　　本文針對Y軸平行之線型馬達同步運動問題進行研究，以PC-based為基，利用比例控制器使Y軸馬達初步同步運動，再利用交叉耦合控制器系統具耦合關係，避免單馬達受干擾時使同步運動誤差加大。並使用前饋控制器改善系統伺服落後，實現Y軸系統同步運動控制。

　The purposes of advanced CNC machine tools are to achieve the performance of high speed and high precision. However, today traditional motors collocation ball screws have not been able to meet the requirement, especially in long distance motion. Therefore, linear motors become more and more important actuator on machine tool. As for experimental equipments, because Y-axis is driven by two parallel linear motors, the synchronized control is an important technology.
　This research focused on the problem caused by Y axis’ synchronized motion in dual parallel linear motors which are on motion control of linear machine tool. Under PC-based, applying proportional controller in the control loop, the synchronized motion behavior can be obtained. Then, adding cross-coupling controller in the control loop, the coupling will be obtained in control system so as to avoid synchronized error caused by noise on single motor. Next, applies feed-forward controller to improve servo lag of control system. Finally, the synchronized control will be realized on y-axis.

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