控制

Research content and research object. The Coagulant Dosage Automatic Control System is discussed emphatically. Including the relation is put up between target standard and the infection factor by date analyzed chart and educational established and sum up the best working point. The target standard including SS COD and OIL .The infection factor including the dosage of PAC PH Mill INTENSION and TIME. On the basis of craft character and control request, it makes a selection of scheme to the whole control system. Finally a scheme is chosen and described as follows: CPU222 of SIEMENS PLC S7-200 is used as the control kernel. V606IC TOUCHER is used as communication man and machine. Controlling pump, compressor, metric pump of system by gathering andanalyzing the flow, PH of raw water .

重点探讨系统的投药自动化，包括系统的数学模型建立的过程，通过数据分析，采用图表和方程式建立系统排放指标(SS、CODcr、含油量)，与各种因素(PAC用量、PH值、搅拌强度、时间)的关系，确定系统的最佳工作点；根据系统工艺特点以及控制要求，对控制系统设计方案进行了选择，确定以西门子PLC(S7-200 CPU222)为控制核心，V606IC10触摸屏作人机界面，通过对原水流量和PH计采样、分析，实现系统中的泵、风机、计量泵等控制；文中从功能上简要地介绍监控系统和给出了自动化原理构成图、PLC软件流程图及部分主要程序。

Electric control system: the sand blast robot adopted the fashion of control automatically completely ; The computer"s control system adopted two-level distribution control; The radar module was used to monitor the distance between the blast gun and the oilcan"s inner wall; Dynamo could be controlled by simply programming with the phase- shifting SPWN technology of unitized transverter.

电控系统：喷砂机器人采用全自动控制方式；计算机控制系统采用二级分布式控制；通过红外测距模块调控喷枪与油罐内壁距离；选用组合变流器相移SPWM技术，通过简单的编程控制电机。

From the relation of the single,the group and the framework,a twifold model was set up. The factor of human was considered, and the human being is significant for the control of complex socio-technical system especially the emergency.

建立了组织行为安全控制两级模型，将人的因素融合到安全控制模型中；探讨了个体、群体和结构对安全控制的深层次影响，认为人因对于复杂技术系统尤其是在出现紧急情况时的控制有重要意义。

The has been studied. Radix isatidis, a Chinese medicinal preparation used commonly , effectively in clinical and unclarified in active substance, was chosen as a model to be studied. Based on the concept of production quality control, considering the features of TCM itself, the process of TCM preparation, especially the heating process has been studied. The physico-chemical properties assay, chemical analysis and bioassay, also the bio-thermal activity had been applied in this study.

根据药物生产质量控制理念，结合中药的特点，本文选取临床常用、疗效确切但药效物质基础不清的板蓝根为研究载体，以中药制剂过程单元操作特别是加热过程质量控制为主要着力点和切入点，在常规理化检测和化学组分分析的基础上，引入生物活性检测，探索建立基于理化—生物关联检测的中药生产过程质量控制模式和方法，以期为中药生产中原料药、半成品和成品实现全程质量控制提供技术支持。

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。

Lastly, in accordance with the actual situations of the prototype structure of mosque pagoda, based on the similar relation of model experiments, a model structure of mosque pagoda with a similar coefficient of 1/10 is designed and fabricated. Earthquake simulating shaking table tests are performed on the model structure of pagoda in the cases the AB type passive control system with SMA dampers is erected or unerected. The leading earthquake responses like the relative drift at the top of the main tower and the small tower, interstory drift ratio, acceleration, and cracking process of the pagodas body etc. are studied. The operational behaviors involving the deformation capacity and energy dissipation capacity is tested for passive control system with SMA dampers under the earthquake excitation, and the corresponding control mechanism and regularity is also analyzed. Furthermore, the performance changes and protection effectiveness is comprehensively evaluated while the model structure of pagoda is seismically protected or not.

最后，根据光塔原型结构的实际情况，以模型试验的相似关系为基础，设计并制作了一个相似系数S，为1/10的光塔模型结构，并先后进行了未安装和安装A、B型SMA阻尼器被动控制系统光塔模型结构的地震模拟振动台试验，研究了模型结构在3种不同工况下，主塔顶部和小塔顶部的相对位移、层间位移角和加速度以及塔体开裂等光塔结构的主要地震反应，测试了SMA阻尼器被动控制系统在地震激励下的变形能力和消能能力等工作性能，分析了相应的控制机理和控制规律，并从总体上评价了光塔模型结构抗震保护前后的性能变化和保护效果。

In the new algorithm, the control value include two parts: fuzzy control value and the assistant control value that indicates the unmodeled value between the fuzzy controller and the ideal controller.

在新的控制算法中，控制量由模糊控制量与反映模糊控制器对理想控制器未建模量的辅助控制量共同组成。

To solve the nonlinear attitude control problem of a class of spacecrafts, the strongly coupled dynamics model is decomposed into some subsystems and the coupling between the subsystems, unmodelled dynamics and exterior disturbances are regarded as the uncertainty of the system.

引 言空间飞行器的姿态控制系统是一个具有参数摄动和外来干扰的非线性系统。滑模控制(Slidingmode control，SMC)对系统参数的不确定性和干扰具有较强的鲁棒性[1，2 ] ，近来越来越多地被用于对空间飞行器的控制，但滑模控制的输出存在高频抖振。

The result of simulation analysis shows that the sliding model controller has not only robust performance of control, high stability and minimum response time but also unsensitive quality for the change of load and disturbance of power system. On the other way, it can maintain good damping property for power system.

仿真分析结果表明：滑模变结构控制应用于ASVG控制既发挥变结构控制具有较强的鲁棒性和良好的动态品质的优势，又充分发挥了变结构控制在电网较大的干扰下仍能保持良好的阻尼特性的优点。

Since DTC has been developed for nearly 20 years as a AC drive technology, it has become the most popular technology in the field of AC drive for its advantages of direct control, short adjusting time and unsensitive with the motor parameters.

而在电机控制技术方面，直接转矩控制作为近年来新发展起来的一种电机控制方法，已显示巨大的优越性，具有控制思想直接、反应快速、受电机参数影响小的优点，成为目前研究的热点。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。