Modeling and design of servo system of CNC machine tools

Positioning accuracy of servo feed unit makes an important effect to processing precision in CNC machine tools. The effects in positioning accuracy mainly are the precisions of mechanism and servo system. And the actions of tuning controller gains should directly affect the servo system precision. This paper, a servo system model and its P/PI controller has been formulated and simulated, using an AC servo feed unit as a tested. Through tuning gains of P/PI controller, analyses and control the effects for the feed unit positioning accuracy. Ultimately, experiments have been carried out to test feed unit by laser interferometer. Its shows that tuning gains of P/PI controller, which given in paper, has effectively improved the positioning accuracy of servo feed unit.

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Optimization of Velocity Loop Parameters in CNC Servo System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.411.255 ◽

2011 ◽

Vol 411 ◽

pp. 255-258 ◽

Cited By ~ 1

Author(s):

Bin Gao Yu ◽

Lin Shi ◽

Kun Qi Wang

Keyword(s):

Machine Tools ◽

Comprehensive Evaluation ◽

Particle Swarm ◽

Servo System ◽

Servo Control ◽

Cnc Machine Tools ◽

Particle Swarm Algorithm ◽

Cnc Machine ◽

Loop Control ◽

Swarm Algorithm

To optimizing efficiently control parameters in feed servo system for adequately giving out the CNC machine tools, the velocity loop control model is built, and the comprehensive evaluation function is given. The standard particle swarm algorithm is improved to optimizing the parameters of velocity loop control in CNC machine tools. It shows the best overall performance of the velocity loop in CNC machine tools that parameters optimized by improved particle swarm algorithm Compared with genetic algorithm, the standard particle swarm algorithm and handy calculation. This optimized algorithm is a new efficient ways to solve parameter optimization of CNC servo control system.

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Modeling and Simulation for Feed Servo System in CNC Machine Tool

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.510.345 ◽

2012 ◽

Vol 510 ◽

pp. 345-349 ◽

Cited By ~ 1

Author(s):

Xue Jun Nie

Keyword(s):

Machine Tool ◽

Performance Optimization ◽

Machine Tools ◽

Transfer Functions ◽

Servo System ◽

Simulation Models ◽

Cnc Machine Tools ◽

Cnc Machine Tool ◽

Cnc Machine ◽

The Relationship

Feed servo system is an important part in CNC machine tool. In order to promote CNC machine tools precision, it is particularly important to enhance the control methods research on feed servo system. In this paper, different mathematical models of CNC machine tools feed servo system in different control modes are established, and their transfer functions are obtained, also the corresponding simulation models are constructed by using Simulink tools under MATLAB environment. Through simulating, the relationship between the systems parameters and the performance of servo system are obtained, some reliable theoretical basis can be achieved for improving and enhancing CNC machine tool servo system performance. Therefore some references for the performance optimization of feed servo system in CNC machine tool are provided.

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Fault Analysis and Treatment of CNC Machine Tool Servo System

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.454.78 ◽

2013 ◽

Vol 454 ◽

pp. 78-81

Author(s):

Ya Bei Shi ◽

Sun Yang

Keyword(s):

Machine Tools ◽

Fault Location ◽

Servo System ◽

Fault Analysis ◽

Cnc Machine Tools ◽

System Failure ◽

Cnc Machine Tool ◽

Cnc Machine ◽

Fault Locating ◽

Fault Mode

The intermediate link of nc systems and machine tools is Servo system. Servo system failure is an important part of the failure of CNC machine tools. Firstly, most common servo system fault mode is introduced from actual work; Secondly, according to fault locating method to determine fault location is discussed; Finally, servo system fault diagnosis example and processing method are introduced.

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Design of PID Controller of Feed Servo-System Based on Intelligent Fuzzy Control

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.693.1728 ◽

2016 ◽

Vol 693 ◽

pp. 1728-1733

Author(s):

Yang Chen ◽

Pan Zhang ◽

Hong Bin Li ◽

Peng Lin Li ◽

Zhi Qiang Yu

Keyword(s):

Fuzzy Control ◽

Machine Tools ◽

Pid Controller ◽

Servo System ◽

Fast Response ◽

Cnc Machine Tools ◽

Time Varying ◽

Cnc Machine ◽

Speed Regulation ◽

Wide Range

The requirements of CNC machine tools for the feed servo system could generally be summarized as high precision, well stability, fast response, wide range of speed regulation, high torque at low speed and so on. The PID controller of feed servo-system based on intelligent fuzzy control was presented based on traditional PID controller. The main feature of this arithmetic was to change parameters in different degrees according to time-varying working conditions, specially this arithmetic could change its domain intelligently according to different conditions and cooperated with a stable controller in case of system crash so that adaptivity and reliability of the feed servo-system were improved, also this feature made application field of the feed servo-system wider.

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The Study on CNC Machine Tools Reform and Error Analysis

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.299.16 ◽

2013 ◽

Vol 299 ◽

pp. 16-18

Author(s):

Xue Peng Liu ◽

Dong Mei Zhao

Keyword(s):

Error Analysis ◽

Error Compensation ◽

Machine Tools ◽

Servo System ◽

Control Program ◽

Cnc Machine Tools ◽

Cnc Machine ◽

Positioning Accuracy ◽

Pitch Error

The control program and servo system of CNC machine tools is analyzed. By pitch error and quadrant error compensation, the positioning accuracy in X-direction is ± 20 μ m.

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