A representative application of linear motors is linear motor trains. The advantage of high-speed operation of linear motors has been highly emphasized, but there were many issues in design and control, leading to a period when it was difficult to expand the market. However, in recent years, with the improvement of linear motor performance and the advancement of control technology, the methods of utilizing linear motors have been re-examined.
The advantages of linear motors include the ability to achieve high-precision feeding without the need for a reduction mechanism, the possibility of long-axis configuration, and the capability to arrange multiple motors for simultaneous operation, among others.
The disadvantages include difficulties in controlling the effects of interference, challenges in achieving high thrust, and the complexity of maintenance and repair.
In recent years, the issues listed among the disadvantages have been mitigated through various technical improvements, and efforts have been made to further utilize the characteristics and advantages of linear motors with regard to their strengths.
Under such circumstances, attention has shifted from "high speed" to "high precision," and the application of linear motors in machine tools such as grinding machines and lathes is being promoted. Additionally, since linear motors are driven by electrical energy, from the perspective of environmental protection, there is potential for their adoption in large hydraulic machinery and the like in the future.
