使针对

Considering present network layer"s complicated and disordered scenery leaded by communicating among various application with different communication protocols and technologies, this dissertation puts forward and implements shield of complicated network communication with standard protocols of TCP/IP, UDP in middle layer and Socket network programming technology, which can greatly alleviate application software personnel"s workload, ease its technical difficulty, and enhance system universality and transplantability.

针对目前各种应用采用不同技术进行网际通信而导致网络层复杂、混乱的局面，本文提出并实现了在中间层采用TCP／IP、UDP标准协议以及Socket套接口网际编程技术来屏蔽复杂的网络通信，大大减轻了应用软件人员的工作量和技术难度，并且使系统具有良好的通用性和可移植性。

Then, aiming at harmonic current problem of single-phase circuit, I predigest the triphase instantaneous harmonic and reactive power theory to be used in detecting harmonic current of single-phase circuit.

然后，针对单相电路中的谐波电流问题，对三相的瞬时无功功率理论进行简化，使其应用于单相的谐波电流检测当中。

To answer these two important questions, this thesis propose "five aspects analysis method" and "three kinds of balance theory" of UDS, which can be regarded as a guidance for conceiving, innovating , analyzing, assessing, comparing and choosing UDS.

针对这两个重大问题，本文提出城市发展战略的&五相分析方法&和&三种平衡理论&，构成了使城市发展战略的构思、创新、分析、评价、比较、选择有章可循的战略分析框架。

to overcome some disadvantages of low precision,slow dynamic response,unconvenience parameter adjust existing in high-power ultrasonic power supply,it applies intelligent control composed of 8089 microcontroller is proposed.the article introduces the modulation principle of spwm,the composition of high-power ultrasonic power system applying the single chip computer to realize the soft of phase lock loop,the mechanism of work and the software thought.it realizes the low loss,high power factor and the whole performance of the circuit is developed.

摘 要：针对目前大功率超声波电源采用模拟控制电路存在精度低、动态响应慢、参数整定不方便等缺点，采用单片机8089组成智能控制的超声波电源系统。提出了基于spwm技术的双闭环控制策略和应用单片机实现软锁相的工作原理和软件思想，使整个超声波电源实现了低损耗、高功率因数，优化了电路的整体性能。

to overcome some disadvantages of low precision,slow dynamic response,unconvenience parameter adjust existing in high-power ultrasonic power supply,it applies intelligent control composed of 8089 microcontroller is proposed.the article introduces the modulation principle of spwm,the composition of high-power ultrasonic power system applying the single chip computer to realize the soft of phase lock loop,the mechanism of work and the software thought.it realizes the low loss,high power factor and the whole performance of the circuit is developed.

寂寞网民何时&回家吃饭&？基于单片机8089的超声波电源控制技术的研究。裴玖玲屈百达□摘要：针对目前大功率超声波电源采用模拟控制电路存在精度低、动态响应慢、参数整定不方便等缺点，采用单片机8089组成智能控制的超声波电源系统。提出了基于spwm技术的双闭环控制策略和应用单片机实现软锁相的工作原理和软件思想，使整个超声波电源实现了低损耗、高功率因数，优化了电路的整体性能。

This compensation circuit can make the stability of the LDO linear regulator undependent on the effect of load capacitor's equivalent serial resistance, and it also makes the unit gain frequency bandwidth change slightly when the load is varying, thus greatly improving the performance of transient response, Furthermore, on the basis of dynamic frequency compensation, an overcurrent protection circuit is designed.

文章针对LDO稳定性的问题，提出了一种内部动态频率补偿电路，使LDO线性稳压器的稳定性不受负载电容的等效串联电阻的影响，其单位增益带宽也不随负载电流变化而改变，大大提高了瞬态响应特性；采用Hynix 0.5μm CMOS工艺模型对电路进行仿真；此外，该电路在实现动态频率补偿的基础上又加入了系统的过流保护功能，当负载电流大于限制电流时，LDO不能正常工作；当负载电流小于限制电流时，又自动恢复到正常工作状态。

For the malfunction of unfeeding of WH- 800 centrifugal machine, we make a systematic analysis and judgment .

针对WH-800离心机出现的不推料故障，进行了系统分析、判断，经过检修，使离心机恢复了正常作业。

During the tele-rehabilitation traing, the rehabilitant's muscle spasm may result in the bilateral telerobot system instability and cause its slave's speed unsmoothness, which make the rehabilitation training inefficient. In order to guarantee the stability and reduce the fluctuation of the speed, a new method based on the variable parameter with BP neural network was brought forward.

为使患者的远程康复训练达到更为理想的效果，针对患者在训练时肌肉痉挛对双向遥操作系统的稳定性以及对从机械手的速度平滑性的影响，提出了一种新的基于BP神经网络变参数控制方法。

For the Hopfield network in solving the traveling salesman problem offen getting unvalid and not optimal solution, this paper introduced a suitable radom initialization of the output values Vxi of permutation matrix to guarantee an effective solution, used the error produced by taking a larger step size and required new solution to be better than or equal to old solution so that the final result can jump out local minima to find the global optimal solution.

摘 要：针对Hopfield网络解旅行商问题经常出现无效解和局部优化解，本文给出置换矩阵的满足一定条件的元素Vxi作为初始值，以便得到有效解。此外，还利用较大的步长所产生的误差和对当前解必须优于或等于已有解的要求，使计算结果能从局部优化解达到全局最优解。

Meanwhile, positive human sera of HCV challenged vaccina ted monkeys after 6 weeks immunized, ALT value rose transiently in monkeys vacci nated by PCX. It was positive in monitoring RNA of HCV using RT-PCR in monkey s era. The result demonstrated that Rhesus monkey immunized by multi-epitope PCX could elicit high-level immune responses.

近年来，由于多表位抗原概念的兴起，在针对EB，HIV等病毒感染的疫苗研究中引入了多表位抗原疫苗［门，这种思路使对HCV疫苗的研究有了新的切入点，F.r.i［'］等用 HCV.H77株 E蛋白的多个表位所制备的兔血清与HCV

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐