A servo system, also known as a servo system, is a feedback control system that precisely follows or reproduces a process. The servo system enables the position, orientation, status, etc. of the object to output an automatic control system in which the controlled variable can follow any change in the input target (or given value). Its main task is to amplify, transform and control the power according to the requirements of the control command, so that the torque, speed and position control of the output of the drive device are very flexible and convenient. In many cases, the servo system specifically refers to the feedback control system in which the controlled variable (the output of the system) is the mechanical displacement or displacement speed and acceleration.
The servo system has unparalleled superiority. First of all, the stability is good. When the disturbance acting on the system disappears, the system can be restored to the original stable state or under the action of the input command signal, the system can reach a new stable operation state. The ability, under given input or outside interference, can reach new or return to the original equilibrium state after a brief adjustment process; secondly, the precision is high: the accuracy of the servo system means that the output can follow the accuracy of the input. The second is the rapidity of the end of the dynamic response process. The second is the rapidity of the end of the dynamic response process. Fast response is one of the symbols of the dynamic quality of the servo system, that is, the response of the tracking instruction signal is required to be fast. On the one hand, the transient process requires a short time, generally within 200 ms, and even less than tens of milliseconds.
In addition, the servo system has high energy saving. Because of the rapid response of the servo system, the instrument can quickly adjust the supply according to its own needs, and can effectively increase the utilization of the instrument's power, thus achieving high efficiency and energy saving.
Looking at the current testing machine industry, such as the internationally renowned Lloiyd, Instron, Zwick, TA, the domestic new Shuangsi (now MTS), without exception, in the application of electronic tensioning machine drive mode selection servo drive system, which is To a certain extent, it confirms the excellent performance of the servo drive system, as well as the high requirements and strict standards of many international brands on their product performance, and also indicates the direction for the development of domestic electronic tensile machines.
Compared to the above-mentioned internationally famous brands, domestic applications of servo systems in the field of packaging inspection are rare. Although it is well known that servo motors have advantages that many ordinary motors cannot match, they are several times faster than ordinary motors. Price cost, so that a large number of packaging testing equipment manufacturers in the choice of the second best choice, the choice of high quality will inevitably bring high costs; choose to compress the cost, sacrifice only the product performance.
A high-quality electronic tension machine not only requires an accurate force measurement system, but also has accurate speed and displacement accuracy. All three are indispensable. However, the conventional motor-driven tensile machines are limited in performance and have low test efficiency, and cannot achieve accurate or arbitrary speed control and regulation. Servo drive can achieve instantaneous forward and reverse, and the test and return response speed is rapid, the experimental speed can be arbitrarily set, can meet the test requirements of a variety of materials at the same time, so the servo drive tension machine can be a good solution to the above problems, making the entire The test process is fast, efficient, and accurate. After comparison, for the same test project, the servo motor is about 2 times the efficiency of the ordinary motor, the noise is low 10 decibels, and there is no displacement accumulation deviation. For ordinary motors, because they cannot be reversed instantaneously, the middle of the commutation must stay at least 5 seconds. Otherwise, the circuit board will be burned out and the instrument will malfunction.
The TSL-1001 Electronic Tensile Tester and the TSL-1003 Electronic Tensile Tester from SiKe Testing Technology Co., Ltd. are applied to the high-accuracy testing of the mechanical indexes of food yao packaging materials, and are examples of the application of servo drive systems in the field of packaging inspection instruments. TSL-1001 Electronic Tensile Testing Machine integrates patented and other proprietary intellectual property technologies and uses a computer, embedded system compound control, high precision imported force sensor, high-performance imported servo drive system to meet the test speed, precision of displacement Calculations.
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