Abstract : Linear motor direct drive systems possess a series of advantages, including simple structure, fast dynamic response, high speed and acceleration, high precision, and low vibration and noise, making them an ideal transmission method for various ultra-high-speed and precision machine tools. This paper introduces the working principle and structural types of linear motors, elaborates on the research status and development trends of linear motor analysis, design, and linear servo drive system control, and describes the application and research dynamics of linear motors on various processing equipment. Keywords: Linear motor drive, servo control, optimization design Introduction Linear motor direct drive systems are a new type of feed transmission method developed in the last 10 years, with broad application prospects on various high-speed and precision processing equipment. The traditional "rotary motor + ball screw" feed transmission method on machine tools, due to its structural limitations, has difficulty achieving breakthroughs in feed speed, acceleration, and rapid positioning accuracy, and can no longer meet the higher requirements of ultra-high-speed cutting and ultra-precision machining for the servo performance of machine tool feed systems. A linear motor is a transmission device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion mechanism. Linear motors possess advantages such as high starting thrust, high transmission stiffness, fast dynamic response, high positioning accuracy, and unrestricted stroke length. In particular, because linear motors have no centrifugal force, their linear movement speed is unlimited; moreover, their acceleration is very high, reaching up to 10g (g = 9.8 m/s²), enabling instantaneous high-speed startup and instantaneous precise stopping during high-speed operation. Therefore, only by employing direct linear motor drive in the feed systems of high-speed, precision machine tools can the required high feed speed and acceleration be achieved. However, using direct linear motor drive in machine tool feed systems also brings new contradictions and problems, mainly manifested in: heat generation, magnetic shielding and protection, load interference, and self-locking and gravitational acceleration issues when applied to vertical feed mechanisms. Solving these problems is crucial for the application of direct linear motor drive. The working principle of linear motors is similar to that of rotary motors, and they also come in various types, including DC, AC, stepper, permanent magnet, electromagnetic, synchronous, and asynchronous. Structurally, they also have moving-coil, moving-iron, flat, and cylindrical forms. The development of linear motors has a long history. Research on linear motors began in the late 19th and early 20th centuries, but without success. It wasn't until the mid-1950s that rapid advancements in control and materials technology, along with the emergence of new control components, opened the door to the widespread application of linear motors, leading to rapid development in both their theory and application. Especially in the last decade, the demands of high-speed, precision machine tool feed systems have fully demonstrated the advantages of linear motors, drawing significant attention and making their research a hot topic once again. [b][align=center]For more details, please click: Current Status and Development of Linear Motor Drive Technology[/align][/b]