Undr the control of frequency inverter and PLC ( Programmable Logic Controller), the general AC asynchronous motor can function as low rotate speed large torque stepping motor. The working principle, structure, adjusting and testing method of the motor system were introduced. 利用变频器和PLC可编程控制器进行控制,可以将普通交流异步电动机用作低速大转矩步进电机,文章介绍了这种步进电机系统的工作原理、系统构成和调试方法。
This presentation introduces the way of inrush free starting of a high voltage asynchronous electric motor with respect to its system structure and working principle, as well as its advantages such as inrush free current and emergency repeated starting. 从系统结构和工作原理简要介绍了高压异步电机的无冲击起动方式。其具有无冲击电流、可紧急重复起动等优点。
The paper deals with the advantages in the application of asynchronous metal-rolling processes, such as lessening remarkably rolling load, giving more exact and uniform thickness to sheet products and making minimum rollable thickness free from the restriction of the working roll dia-metre. 不等厚度球罐整体无模成形工艺的实验研究与有限元分析本文对异步轧制可以显著地降低轧制力、提高带材厚度的精度和最小可轧厚度不受工作辊径限制等优点作了介绍。
Its pick up person used asynchronous working way, very suitable for handling emergent data streams, its IP technology has an important change and breakthrough ( LAN exchange, star wiring, large capacity MAC address storage and managerial, etc.). 它的接人采用了异步工作方式,很适于处理IP突发数据流,其技术也已有了重要的变化和突破(LAN交换、星形布线、大容量MAC地址存储以及管理性等)。
The AC asynchronous electrical dynamometer with squirrel-cage rotor is used widely since it has a simple structure, good precision, widely working range and good control performance. 鼠笼式转子结构的交流异步电力测功机由于具备电机结构简单,精度高,测功范围广,试验条件容易控制等优点,近年来得到了广泛的应用。