查询词典 motor ambulance

The article presents the developing condition of PWM and SVPWM first.Then the theory of SVPWM is discussed in detail.The SVPWM is based on the thought of magnetic chain tracking.It makes the ideal magnetic chain circle of three-phased sysmmetry electric motor supplied by three-phased sysmmetry sine wave voltage for basis,uses the practical magnetic chain vector formed by the different switch modes of three-phased inverter to track the basic magnetic chain circle.During the course of tracking,the inverter changes the switch modes properly to form the PWM waves.Then the modulation wave of SVPWM is analyzed in detail.The modulation wave of SVPWM is implicit,but the analogous modulation wave in A-B-C axis needs to be calculated in order to expose the internal relation of SVPWM and SPWM.That is to show the implicit modulation wave of SVPWM. SVPWM actually is a transformed SPWM ruly sampled by the modulation wave which is injected by the zero prefaces based on space vectors.

本文首先对脉宽调制技术的发展现状进行了综述，在此基础上分析了电压空间矢量脉宽调制技术的发展现状；接着对空间电压矢量脉宽调制技术的基本原理进行了详细的分析和推导，SVPWM是基于磁链追踪的思想，它以三相对称正弦波电压供电下三相对称电动机定子理想磁链圆为基准，由三相逆变器不同开关模式下所形成的实际磁链矢量来追踪基准磁链圆的，在追踪的过程中，逆变器的开关模式作适当的切换，从而形成PWM波；然后详细分析了电压空间矢量脉宽调制技术的调制波，虽然SVPWM法的调制波是隐含的，但是为了揭示SVPWM法与SPWM法的内在联系，需要求出SVPWM在A-B-C坐标系上的等效调制波，也就是将SVPWM的隐含调制波显化；SVPWM实质是一种基于空间矢量在三相正弦波中注入了零序分量的调制波进行规则采样的一种变形SPWM。

According to the machine apparatus and work capability of the three-fingered dexterous hand, The hardware circuit of the control system with 89C51 singlechip has been designed,which include the circuit of collection signals and the drive circuit of DC-motor, the circuit deal with signals of Force Sensing Resistors ,the communication interface circuit and so on.

依据三指灵巧手机械本体和工作性能，本文设计了基于89C51单片机的控制系统硬件电路，其中包括信号采集电路、电机驱动电路、力传感器的信号处理电路、通讯电路等。

To walk an avatar through the streets of Second Life, you have to wear an electrode-equipped headpiece that able to monitor activity in three areas of the motor cortex (the region of the brain involved in controlling the movement of the arms and legs), then simply thinks about moving parts and direction for an EEG machine to record the thought-moving datas, and relays it to the BCI running a brain wave analysis algorithm that interprets the imagined movements.

步行精灵通过街道第二生命，你必须得穿上一电极装备精良的headpiece认为，能够监测活动在三个领域的运动皮质（该区域的脑所涉及的控制运动的胳膊和腿），然后简单地认为，有关运动部件和方向，一脑电图机记录的思想，移动数据，继电器，它向bci运行的脑电波的分析算法，该算法解释想象的动作。

Tension control equipped with floating roller, 7-motor, 4-section tension closed-loop control system.

张力控制采用浮动辊式，七电机四段张力闭环控制系统。

2 System components: Active wear-resistant rubber roller, the pressure with a rubber roller, reducer, frequency conversion motor, auto-stretch tension roller, roller and so on.

3.6.2系统组成：主动耐磨橡胶胶辊、压带胶辊、减速机、变频调速电机、自动弹力张紧辊、托辊等。

This positive-feed insertion system has the tension of each roller controlled by a Control Techniques Dynamics UMD servo-motor with resolver feedback to a Unidrive SP AC drive operating in servo-mode.

在这种强制进料插入式系统中，每一辊子的张力都由艾默生CT Dynamics的UMD伺服电机控制， Unidrive SP交流驱动器在伺服模式下驱动带编码器反馈伺服电机。

The paper dispenser M600 is zero speed the paper that the tension between roller is as the first tensities, quick-roller is out of paper storage of paper Road between the enlarged the paper easy-to-moment; reserve-roller is the following two tensities roll, from tensities motor-driven, and close to the pressure roller, increase the pressing of the paper; and then there are the adjustment to detect tape tension, to meet business card printing and membership card production requirements, stable b tensities role in regulating improper adjustment roll will affect overprinter precision; reserve-roller is followed by a correcting device, its purpose is to control the paper tape into the business card printing and membership card production unit, on the left and right position paper tape tension changes.

M600的纸架是零速接纸，储纸辊之间的张力为第一次张力，快接纸时储纸辊之间的纸路加长，便于瞬间接纸；储纸辊下面有二次张力辊，由二次张力电机带动，与压纸辊紧靠在一起，增加纸张的压紧力；再下面有调正辊，起到探测纸带张力、满足制卡和会员卡制作要求、稳定二次张力的作用，调正辊调节不当将影响套印精度；储纸辊后面有纠偏装置，其作用是控制纸带进入制卡和会员卡制作单元的左右位置，对纸带张力的变化影响不大。

"Transfer mode" used motor oil transfer mode, there is no overload protection function, the load increased, the four tension rod threads, thread nut transfer mold damage.

&调模&使用油马达调模，没有过载保护功能，负载加大后，四根拉紧杆螺纹、调模螺母螺纹会损坏。

Sensory fibers responding temperature, light touch and pin-prick sensation are affected first, followed by sense of vibration, tendon reflex and motor fibers.

糖尿病的神经病变以周边神经病变最常见，其中以感觉纤维最早受损，包括对温度、轻触与针刺的感觉，其次是振动与肌腱反射，至於运动纤维较晚受损。

SUMMARY OF BACKGROUND DATA: Brown-Sequard syndrome involves ipsilateral loss of motor function combined with contralateral loss of pain and temperature sensation. Brown-Sequard syndrome is commonly seen in the setting of spinal trauma or an extramedullary spinal neoplasm, but rarely it can be caused by a herniated cervical disc.

背景资料：脊髓半切综合症包括同侧运动功能丧失以及对侧痛温觉的丧失，常见于脊柱损伤或脊髓外肿瘤，由于颈椎间盘突出所致则较为罕见。

We are used to drinking our wine with meals, usually in a relaxed and convivial setting.

我们通常习惯于在一种无拘无束并且快乐的环境下，就着美餐饮酒。

Not being able to settle the argument as to which is better, we just each bought a bagful of the kind we respectively favoured.

因为没法证明熟苹果还是青苹果好点，我们只好各人买一大袋自己喜欢的那种。