1、控制系统Abstract: the information age high-tech traditional industries, in the rapid development of mechanical industry automation appeared in some new technology: the movement control loop ac servo motor drive technology, computer technology and programmable controller, the movement control CARDS, etc.
2、 This paper analyzed and summarized the new technology of basic principle, characteristics and application status, etc.Keywords: linear motor servo drive technology, computer, programmable controller, motion control1 introductionInformation age of high-tech flow caused by the traditional industry, t
3、he profound change. As one of the traditional industry, machinery industry in this new technology revolution and product structure and production system structure is a new species, microelectronics technology, the rapid development of computer technology and information, intelligent mechanical devic
4、e and power equipment, machinery industry, combining began a massive mechatronics technology revolution.Along with the computer technology, electronic power technology and sensor technology development, the advanced countries mechtronie product emerge in endlessly. Machine tools, automotive, instrum
5、ent, electrical appliances, light industrial machinery, textile machinery, packaging machinery, printing machinery, metallurgy, machinery, chemical machinery and industrial robots, more attention by all aspects of peoples lives, it in improvement, improve work efficiency and save energy and reduce t
6、he material consumption, strengthen the competitiveness of the great aspects plays a role.In the rapid development of the electromechanical integration technology, motion control technology as its key part, also an unprecedented development, and each manufacturer launched motion control of new techn
7、ology, new product. This article mainly introduced the closed-loop AC Servo drive technology （Full Closed Servo Motor, AC drive technology （go）, which Linear Programmable Controller （Programmable Controller is Computer, the PCC） and the movement control CARDS （Board） Motion needed several representa
8、tive of new technology.2 the closed-loop ac servo drive technologyAlong with the computer technology, electronic power technology and sensor technology development, the advanced countries mechtronie product emerge in endlessly. Machine tools, automotive, instrument, electrical appliances, light indu
9、strial machinery, textile machinery, packaging machinery, printing machinery, metallurgy, machinery, chemical machinery and industrial robots, intelligent robots and many other categories of products every year there are new developments. Mechatronics technology has been more and more concerned by v
10、arious aspects, it in improving peoples life, improve work efficiency and save energy and reduce the material consumption, strengthen the competitiveness of the great aspects plays a role.In some of the positioning accuracy and the dynamic response of the demand is higher, electromechanical product
11、ac servo system is widely used, including digital ac servo system with digital control mode is more, but the trend is very simple, debugging, use is popular. The servo drive system of the use of advanced Digital Signal Processor （DSP） Digital Signal Processor, to the motor shaft back-end department
12、of photoelectric encoder and on location in the drive and sampling motor between the position and speed closed-loop control system, and give full play to the high speed Digital Signal Processor （DSP）, automatic gain control of the servo system, and can even load changes, the real-time tracking contr
13、ol system; gain Some drivers have fast Fourier transform （FFT） function, the measure of GongZhenDian mechanical equipment, and through a notch filter to eliminate mechanical resonance.Normally, the digital ac servo system mostly in half of the closed-loop control work, namely the encoder feedback se
14、rvo motor speed loop, also be for position loop. This kind of control mode for transmission chain of clearance and error cannot overcome or compensation. In order to obtain higher control precision, should be in the final of the installation precision detection devices （such as: grating feet, photoe
15、lectric encoder, etc.）, i.e. the closed-loop control. Comparison of the traditional method is: the closed-loop control servo systems only accept instruction, speed loop control loop control by the superior position controller （most of the closed-loop system is nc）. This greatly increases the difficu
16、lty of the upper controller, servo system is limited. Currently, foreign already appeared a more perfect, can achieve higher accuracy of the closed-loop digital servo system, the realization of high automation equipment more easily. The control principle, as shown in figure 1.This system has overcom
17、e the defect of half a closed-loop control system, servo drive can direct sampling in final mechanical part position feedback element （such as grating feet, magnetic grid feet, revolving encoder, etc.）, as the position loop, and the motor speed feedback at only as coder. Such servo system can elimin
18、ate the mechanical transmission of gear gap, gap （e.g., etc）, ball screw clearance compensation of mechanical transmission manufacturing error （such as ball screw pitch error, etc）, and realize the closedloop position control functions, higher precision. And this whole closed-loop control are accomp
19、lished by servo drive, without increasing the burden and supervisory controller in its growing industry automation equipment and developed, and start using this kind of servo system.In some of the positioning accuracy and the dynamic response of the demand is higher, the mechtronie product in commun
20、ication This system has overcome the defects of the closed-loop system and the position loop, sampling can directly from in final position on the mechanical components （such as gratings feedback, magnetic gate ruler, revolving encoder, etc）, and the motor speed loop at only as encoder, the feedback
21、can eliminate all the gap existing in machinery, and the servo system, but also can appear on the mechanical transmission error compensation, achieve real closed-loop function, achieve the high position control. And this whole closed-loop control are accomplished by drive, without increasing the bur
22、den of supervisory controller.Owing to the closed-loop ac servo system can get high precision, and does not need to increase the complexity of supervisory control system. So it is widely used in nc machine tools, precision CNC equipment design, etc.This system has overcome the defect of half a close
23、d-loop control system, servo drive can direct sampling in final mechanical part position feedback element （such as grating feet, magnetic grid feet, revolving encoder, etc.）, as the position loop, and the motor speed feedback at only as coder. Such servo system can eliminate the mechanical transmiss
24、ion of gear gap, gap （e.g., etc）, ball screw clearance compensation of mechanical transmission manufacturing error （such as ball screw pitch error, etc）, and realize the closedloop position control functions, higher precision. And this whole closed-loop control are accomplished by servo drive, witho
25、ut increasing the burden and supervisory controller more industryIn the numerical control lathe, especially in computer nc machine tools, because it has closed servo drive system work reliably, high precision and strong anti-interference, relative to the open-loop servo drive system is more commonly
26、 used. But due to the increased closed servo drive system, feedback, comparative position detection, and step into the open loop system, its structure is more complex, debugging is relatively more difficult.A closed-loop servo drive system, the actuatorAlong with the development of numerical control
27、 technology, the requirement of actuators are summed up and increasingly high, basically have the following:（1） to minimize the rotational inertia of the motor, in order to improve the system of fast dynamic response,（2） improve motor overload ability to adapt often appear the impact of the phenomen
28、on,（3） improve speed and stability operation of motor, to ensure the uniformity of speed servo system accuracy.Due to the particularity of mechanical processing, general motors can not meet the nc machine tools for servo control requirements. At present, in the ncThe machine is widely used in the dc
29、 servo motor and ac servo motor.1 dc servo motorThe dc servo motor was used in machine tool servo system is a kind of actuators. In the servo system used in the dc servo motor servo motor for dc motors, such as low inertia and wide speed motor, etc. Although these servo motor, have the features of d
30、ifferent structure, but its working principle and dc motor are similar.（1） low inertia dc servo motor. Main whether slot dc servo motor armature and other types of motor. No slots dc servo motor armature the working principle and structure of the same dc motor, the difference and features are: the a
31、rmature core is smooth without trough, the armature winding circles with epoxy resin curing and binder in the armature core on the surface, the length and diameter of the armature five times more than in the air-gap size than the average dc motor is 10 times greater than. Its output power in dozens of watts to 10 kW. Mainly used for fast movement, power system.（2） w
