电机驱动的

In this paper, a BUCK circuit added lead before the full bridge which used in BLDCM drive system is proposed, and this drive system is studied.

在永磁无刷直流电机驱动系统中，本文提出在传统的三相桥前加上BUCK电路，用于永磁无刷直流电机的驱动，并就系统进行了理论分析与实验研究。

After introducing to the inner structure and the driver timing of a interline area-CCD KAI-1010M briefly,a high speed and low cost CCD driver circuit used in digital space survey camera was designed in a new way.

介绍了行间转移面阵CCD芯片KAI-1010M的内部结构和驱动时序，采用新方法和低成本器件设计了该CCD芯片的驱动电路，把电源和电机控制的脉冲宽度调制技术引入CCD驱动电路，采用超高速运放驱动高速负压信号以减小其上升沿和下降沿时间，达到高速低成本驱动要求，解决了驱动设计中的技术难点。

However, the step motor module is the real center of the control system, because only if the step motor drives the piston of the injector the insulin injection can be realized and the other modules are all serving for it.

由于胰岛素的输注最终是由步进电机驱动注射器活塞来实现的，因此，步进电机驱动模块是整个系统的核心，其他所有模块都是为这个核心服务的。

On the basis of considering all kinds of using conditions, reliability analysis model and indicator evaluation system was introduced. Indexes weight was determined scientifically by using comprehensive evaluation obtained from combining a subjective evaluation weight with objective entropy weight. An effective evaluation of reliability level was made by fuzzy theory.

构建了纯电动轿车用异步电机驱动系统的可靠性分析模型，在综合衡量电机驱动系统使用条件的基础上引入可靠性指标评价体系，将主观评价权值同熵权客观权值相结合确定各指标的权重，并采用模糊理论对其可靠性水平作出有效评价。

Based on the comparison between several present schemes controlling DC motor with PWM, a design scheme for drive circuit fit to EPS is presented, in which both low side and high side are N-MOS and high side is either in fully-off or fully-on state while low side is controlled by logic circuit.

在分析电动助力转向系统电机驱动电路性能和可靠性要求的基础上，对比常用的PWM控制直流电机的优缺点，提出了电动助力转向系统驱动电路的设计方案：上、下管均采用N沟道MOS管，上管常通或常闭，下管由PWM逻辑电平控制。

Realizes the robot rotary motion using Step Motor machine actuation and the overtone gear drive, uses another tablecloth Step Motor actuation ball bearing guide screw to revolve, thus causes with the ball bearing guide screw nut vice- solid company at the together arm realization the vertical motion, his/her the arm expansion and contraction movement actuates by the hydraulic cylinder, the entire manipulator through two straight lines directions and a hand of rotation, the realization work piece transporting work, this article has carried on the detailed design to manipulator's mechanism.

利用步进电机驱动和谐波齿轮传动来实现机器人的旋转运动，利用另一台步进电机驱动滚珠丝杠旋转，从而使与滚珠丝杠螺母副固连在一起的手臂实现上下运动，其手臂的伸缩运动由液压缸驱动，整个机械手通过两个直线方向和一个旋转方向，实现工件的搬运工作，本文对机械手的机械结构进行了详细的设计。

Realizesthe robot rotary motion using Step Motor machine actuation and theovertone gear drive, uses another tablecloth Step Motor actuationball bearing guide screw to revolve, thus causes with the ballbearing guide screw nut vice- solid company at the together armrealization the vertical motion, his/her the arm expansion andcontraction movement actuates by the hydraulic cylinder, the entiremanipulator through two straight lines directions and a hand ofrotation, the realization work piece transporting work, thisarticle has carried on the detailed design to manipulator'smechanism.

利用步进电机驱动和谐波齿轮传动来实现机器人的旋转运动，利用另一台步进电机驱动滚珠丝杠旋转，从而使与滚珠丝杠螺母副固连在一起的手臂实现上下运动，其手臂的伸缩运动由液压缸驱动，整个机械手通过两个直线方向和一个旋转方向，实现工件的搬运工作，本文对机械手的机械结构进行了详细的设计。

The characteristic of this series leveler iS that it has adopted two national patent technologies:group driving plate levelling machine ZL200420001176.0 and axial decelerating motor leveler ZL200520007514.6.Each top roll is driven by a set of decelerating motor.and every two lower rolls are driven by a set of dynamic system,so that the line speed of each roll iS consistent with sheet metal speed of the contacting part,and it has solved the problems existing in traditional transmission system,such as friction between sheet metal and roll surface.and mechanical interference problem in the system And the working roll adopts spherical roller bearings which have little friction resistance.so this series leveler has such advantages as high levelIing quality,Iittle noise,low energy consumption and environmental protection.compared with traditional levelers.

该系列矫平机的特色之处在于：采用分组驱动板材矫正机(ZL200420001176.0)和一种轴装式减速电机矫平机(ZL200520007514.6)两种国家专利技术，每根上辊由一套减速电机驱动，每两根下辊由一套动力系统驱动，从而使各辊的线速度与所接触部位的板料速度相一致，消除了传统传动系统存在的板料与辊面之间的摩擦和传动系统内部的机械干涉问题，同时由于工作辊的轴承均采用轧机用调心辊子轴承，摩擦阻力小，因此，该系列矫平机与传统矫平机相比，矫平质量高、噪音小、能耗低、节能环保。

The design and implementation of automobile engine speed indicator is given, which uses PWM method to directly realize stepper motor drive in micro-step .

本文介绍了通过PWM脉冲实现步进电机微步驱动的原理，并给出了一个采用PWM调制方法直接实现步进电机微步驱动的汽车发动机转速表的设计与实现，该设计以软件的算法处理代替了部分相关硬件功能，在保证系统可靠性的前提下有效地降低了仪表成本。

Brushless DC motor driver for the use of six-phase control procedures, can be used for six three-phase full-bridge driver circuit of brushless DC motor control.

详细说明：无刷直流电机驱动程序，采用六段换相控制程序，可用于六管三相全桥驱动电路的无刷直流电机控制。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。