查询词典 control criterion

It becomes more difficult to manage, integrate and share the control system real-time data when we set up the industrial real-time database because of complicated affair between every department and isomeric character of the system. A three-level-structure model and the method to establish database is provided based on CORBA criterion with its character of being regardless of programming languages, hardware platform and network protocol . A universal real-time database faces multi-system is also set up by learning the distributed criterion, it can realize the request broker , and the application software can visit the database pellucidly ; Thus the power station simulation model can be linked with the control system such as infi90 , ovation and be made use of the control object , a closed simulation and control experiment system is set up. Further more we can build an integrate automatic experiment platform from the simulation object of power plant to the process control and the to SIS. Li Ming(Control Theory and Control Engineering)Directed by associate prof. Lin Yongjun

在创建工控领域实时数据库时，企业各部门间的复杂事务及内部异构性给实时数据的管理、集成和共享带来了一定的困难，根据CORBA规范具有语言无关性、平台无关性和网络协议无关性的特点提出基于分布式计算规范CORBA的三层体系结构模型及建立与维护实时数据库的方法和途径；通过CORBA规范建立面向多个分散控制系统的通用实时数据库，实现数据访问代理，使应用软件可以透明地对实时数据库进行访问、存取、管理；将Infi90、Ovation分散控制系统与火电厂仿真机模型进行有效的互连，以全物理过程仿真数学模型为对象，构建了闭环控制仿真实验研究系统，实现数据的高效连通及管理；进而通过基于CORBA的实时数据库构建一个从火电厂仿真机对象到过程控制设备再到SIS系统的综合自动化试验平台。

The Routh criterion of control system theory is applied to obtain the stability criterion.

通过对整流桥换相过程的分析，建立了系统在稳态运行点的微变稳定模型。

Based on the theory and experiments, the paper builds up the simplified mathematical model of the servo control system, deduces the system control rigidity expression, and points out the method to improve control rigidity. According to Routh stability criterion, the analytic stability condition is solved, which shows the conflict between the stability and control rigidity and that gyroscope is the key factor of the conflict.

论文结合理论和试验建立了光电稳定伺服控制系统的简化数学模型，推导出系统控制刚度表达式，指出提高控制刚度的方法；利用劳斯判据求解出系统稳定的解析条件式，描述了稳定性与控制刚度之间的矛盾，并指出陀螺是矛盾关键。

In this model,the fuzziness of multi-objective function and the stress control criterion are solved.

模型解决了多目标函数及应力控制标准的模糊性。

MethodsThe content was determined by solvent extraction and acid dye colorimetiy, with Acanthoine Ruscope-ine （C16H22N4O2） as a control criterion and bromocresol green as the acid dye, and the wavelength was at 418 nm.

方法采用溶剂萃取酸性染料比色法测定，以去氢飞廉碱（C16H22N4O2）为对照品，溴甲酚绿为酸性染料，用氯仿萃取，检测波长418 nm。

This paper put forward a kind of optimization method based on genetic algorithms for bidirectional flow laterals diameter on sloping field. This method could get the optimal diameter and control criterion of irrigated quality such as average flow and uniformity. Meanwhile, the running control parameter such as the optimum crotched position and intake pressure of laterals could be determined.

提出了一种基于遗传算法的坡地双向毛管管径的优化方法，能获得毛管最优管径和灌水器平均流量、灌水均匀度等灌水质量控制指标，同时能确定毛管最佳分流点位置和毛管进口压力等运行控制参数。

Based on the above, the author built the vehicle virtual prototyping simulating model including the front and rear suspensions, the powertrain, the steering system, the front and rear tires, wrote the driver control files(abbreviation. dcf) and driver control data files(abbreviation. dcd) for vehicle handling stability simulation analyzing according to the requirements of the current standards GB/T6323.1-94-GB/T6323.6-94 of our nation"s for vehicle controllability and stability test, carried out simulation and analyses for vehicle handling stability such as steering wheel angle step input test, returnability test, steady static circular test, pylon course slalom test and steering efforts test, and evaluated the car"s handling stability performance by scoring according to GB/T 13047-91 ?Criterion thresholds and evaluation of controllability and stability for automobiles?.

在上述基础上建立了包括前后悬架、发动机、转向系、前后轮胎等在内的整车虚拟样机仿真模型，并根据我国现行整车操纵稳定性试验标准GB/T6323.1-94～GB/T6323.6-94的要求，编写了用于整车操纵稳定性仿真分析的驱动控制文件(Driver Control Files，缩写为DCF)和驱动控制数据文件(Driver Control Data Files，缩写为DCD)，进行了转向盘转角阶跃输入试验、转向回正试验、稳态回转试验、蛇行试验和转向轻便性试验等整车操纵稳定性试验仿真分析，并参照GB/T13047-91《汽车操纵稳定性指标限值与评价方法》对该轿车的操纵稳定性进行了评价计分。

Combining with the state of our research, the control strategy of the electronically controlled diesel engine and the design method of ECU have been put forward. All of these include determining control function, compartmentalizing the sub-functions, defining key of control links and control scheme have been brought forward. The control logic has been designed to meet the requirements of the control function of fuel injection and gas exchange system. The criterion of speed stable state has been proposed in this paper.

结合本课题的研究状况提出了电控柴油机的控制策略和电控单元的设计方案，包括控制功能的确定、子功能块划分、关键控制环节的确定，提出了两套控制方案，设计了控制逻辑以满足喷油、配气系统的控制功能要求，并提出了转速稳定状态的判据。

Based on numerous sample analyses of high-rise buildings with transfer storey and by considering the effects of various different kinds of structures and different shear wall thicknesses, an appropriate harmful drift angle ratio of no more than 0.9 is put forward as the control criterion of the lateral stiffness of high-rise buildings with transfer storey.

通过对大量不同结构布置、不同剪力墙厚度的带转换层的高层建筑结构的计算分析，将楼层有害位移角比小于等于0.9作为带转换层的高层建筑结构楼层侧向刚度的控制准则。

Based on the crack control criterion, the deflection control criterion in ultimate state of service and the strength control in the ultimate state of load-carrying capacity and the nominal steel percentage of section of beam, the formulas for the calculation of the control moment capacity of T-beam and bridge under the limiting deflection condition、the limiting cracking condition and the ultimate strength state were given, respectively.

在提出名义配筋率概念的基础上，基于结构正常使用极限状态的变形控制、裂缝控制，承载能力极限状态下的强度控制，推算不同极限状态下被预测梁的控制弯矩，并建立了桥梁结构承载能力预测方程，从而完成桥梁结构实用动力预测全过程。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。