Sewing Machine Shop in Karaikal - VS Sewing Machine
By the prompt development of textile industry, the design of the equipment of textile industry is developing towards high precision, multifunction and low cost. ISM is one of the key equipment in textile industry. It is composed of motor servo system and the traditional sewing machine, so it has some additional functions besides all of the functions provided by traditional sewing machine, for which the efficiency of product line can be improved greatly by its high automation, as well as the product quality. The precision of ISM is mainly determined by the control precision of the motor servo system. Therefore, it is essential of the research on the motor servo system to developing an ISM system. Presently, classic PID control theory is mainly adopted in the research on speed control of the motor servo system of ISM. Based on the classic PID control theory, increment-PI control algorithm or fuzzy PID control theory are also adopted in this research field .brother professional multi needleembroidery machine
Considering speediness, stabilization precision and overshoot of the ISM’s motor servo system which is a characterization of non-linear and strong coupled system, a comparison result among classic PID, increment-PI and fuzzy-PID shows that the effect of control by Fuzzy PID control algorithm is the best, increment-PI algorithm takes second place and the classic PID control algorithm is the worst .
The precise mathematical model of the object will be not required if fuzzy PID control algorithm is adopted. Instead, the fuzzy control rules, which would be used to determine the control volume, are built mainly based on the experience of the developers and experts. However, if the developer is not enough familiar with ISM, the application of fuzzy control will cost huge time on making the fuzzy control rules for ISM’s motor servo system, and the fuzzy control rules may be half-baked or even incorrect. Consequently, the effect of fuzzy control will be much worse than classic PID control [9]. An algorithm is needed when the developers just have a few knowledge of the ISM, which will spend much less time to realize the motor control. brother sewing and embroiderymachine
The differentiator in classic PID control improves the system’s fast response characteristic, but it amplifies the external disturbance, which has a bad impact on the reliability of the system. Hence, the differentiator is deleted in the application of increment-PI control considering the complex industry environment for the ISM’s well working. This method is simple and practical, but the dynamic response, speed smooth and reliability of the system needs improving if this method is applied in ISM.
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