Abstract
CNC machine tools have been popularized in the development of the manufacturing industry because of their high precision, high speed, high efficiency, and safe and reliable processing. The numerical control system and the measurement system of the machine tool are the key components of the modern numerical control machine tool, especially the measurement system of the machine tool, which is a prerequisite to ensure the high precision of the machine tool. The sensor is an important part of the measurement system. Sensors are devices that can sense the measurement objects within the measurement range and convert them into output signals and information according to certain rules. They are mainly used to detect the operating objects, system status, and operating environment status of the machine tool system and effectively control the normal operation of the machine tool system. Accurate and reliable information is provided. This study takes the CNC machine tool control system as the research object and studies the optimization measures of the sensor data to its performance. First, a model of the CNC machine tool control system was built based on MATLAB/Simulink, and then, based on this model, an open-loop (without sensor) and closed-loop (with speed and position sensors) control systems were built and were finally verified by simulation. The research results show that when there are sensors, the CNC machine tool control system has better stability and robustness.
Highlights
Introduction e sensor is a measuring device that converts the measurement to a certain physical quantity with a certain degree of accuracy and is convenient for application. e input quantity of a commonly used sensor is a certain measured quantity, which may be a physical quantity and can be a physical quantity of gas, light, or electricity, mainly electrophysical quantity. ere are many types of sensors [1–7]
In order to meet these requirements, the detection devices related to the servo system must have high accuracy and precision. e development of the servo system is closely connected with the speed regulation theory of AC motors and the development of power electronic technology, micromotor technology, microcomputer technology, sensor technology, etc. and has experienced the development of open loop, hydraulic, electrical, DC motor servo, etc
In order to ensure that the machine tool reaches the best state when it leaves the factory to obtain the best steady-state performance and dynamic performance, after the servo drive completes the basic configuration of the drive and the motor, further control parameters need to be adjusted for the system with load to make the electrical parameters that are matched with the mechanical structure to improve the accuracy of the system speed and position control, which is called the optimization of the servo system
Summary
Servo systems, and the system is mainly composed of semiclosed loop, fully closed loop, and other servo control forms [10–15]. 2. Mathematical Model of CNC Machine Tool Control System e performance of the permanent magnet synchronous motor servo system is closely related to the structure and performance of the motor itself and the selected control strategy called direct torque control. In order to ensure that the machine tool reaches the best state when it leaves the factory to obtain the best steady-state performance and dynamic performance, after the servo drive completes the basic configuration of the drive and the motor, further control parameters need to be adjusted for the system with load to make the electrical parameters that are matched with the mechanical structure to improve the accuracy of the system speed and position control, which is called the optimization of the servo system.
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