The New Scheme Research of Step Motor Drive

新兴的计算机工业迅速将步进电机采用到外设应用当中。步进电机的主要优势在于能提供开环位置控制,而成本只是需要反馈的伺服系统的几分之一。通过分析步进电机几种常见的驱动方式,并研究了步进电机驱动控制中的关键技术,认真学习了东芝公司的大功率步进电机驱动芯片THb6064H的相关资料,在充分考虑步进电机在节能灯流程控制中的具体要求的前提下,本文通过实验仿真和应用实例,证明了该步进电机驱动方案简单、准确,有效。The step motor has already applied into the peripherals of the computer industry.The main advantage of the step motor is that it can provide the open loop position control with costing just one of the parts of the feedback servo system.By analyzing the several common driving mode of step motor,investigating the key technology of drive control of step motor,,and studying seriously the related materials of the Toshiba's high power step motor driver chip THB6064H,in this paper we give some simulation results and the application examples under full consideration of the step motor in the process control of energy-saving-lamps specific requirements,which demonstrates that this step motor driver scheme is simple,accurate and valid

The Research and Design of Conversion Frequency Type Power Ultrasonic Generator

在超声波无纺布焊接、超声波车削等负载频繁剧烈变动的应用场合，我们希望换能器具有功率自动调节的功能。即在换能器空载时吸收的功率小，在有负载时吸收的功率大。并且负载越重，吸收的功率越多，传输给负载的功率也越多。随着对换能器研究的深入，一对一的超声波发生器与换能器匹配，已经不能满足现实需求，所以开发一对多的超声波发生器具有很强的实用价值。 在完成本论文的过程中，主要做了以下几方面工作并取得一定的成果。 本论文首先对超声波换能器的震动特性进行了详尽的研究，主要讨论有关超声波发生器的数学模型的建立以及对该模型的全面分析，这部分关于超声波换能器的研究主要是为超声波发生器的反馈回路的研究打下坚实的理论基...In the applications of violent changes in load frequent, such as ultrasonic non-woven fabrics welding and ultrasonic cutting, we hope that the transducer has the automatic adjustment function of the power. That is the power absorbed in the no-load of the transducer is small and in load of the transducer needs more power. When the load is heavier, the power absorbed by transducer and transferred to...学位：工学硕士院系专业：信息科学与技术学院自动化系_检测技术与自动化装置学号：2322009115285