Abstract : This paper introduces the application of vector frequency converters in servo systems for induction asynchronous motors. This system employs PLC control, high-performance frequency converter speed regulation, and upper-computer monitoring technology, improving system flexibility and reliability, and achieving good results. Keywords : Vector frequency converter, AC servo system, application, monitoring technology. The development of servo systems has evolved from hydraulic to electrical. Electrical servo systems are classified into DC servo systems and AC servo systems based on the type of motor they drive. AC servo systems can be further divided into permanent magnet synchronous (SM-type 1 motor AC servo systems and induction asynchronous 0M-type) motor AC servo systems based on the type of drive motor they use. Due to the complex mechanical structure and high maintenance workload of DC servo motors, including brushes and commutators, this has become a bottleneck in the development of DC servo drive technology. With the maturity of microprocessor technology, high-power power electronics technology, and the development and cost reduction of permanent magnet materials for motors, AC servo systems have developed significantly and will gradually replace DC servo systems. I. AC Induction Asynchronous Servo System DC servo systems have advantages such as stable dynamic performance, high low-speed torque, and wide speed range, which are generally unattainable by ordinary AC drive systems. With the development of frequency converter technology, vector control (VC) theory, also known as field-oriented control theory, emerged in the late 1970s. The development and use of vector control variable frequency speed regulation system technology enabled asynchronous motor speed regulation to achieve high precision and fast response performance comparable to DC motor speed regulation. The task of motor speed regulation is to control the rotational speed. Speed ​​changes are achieved through torque, and no other control quantity can affect speed except torque; therefore, the key to speed regulation is torque control. [b][align=center]For more details, please click: Application of High-Performance Vector Frequency Converters in AC Servo Systems[/align][/b]