查询词典 closed system

The research is on the driver's directional control strategy, steering behavior and their influence on the driver-vehicle closed-loop system.

本文针对驾驶员操纵汽车转向的控制策略、操纵行为及其对驾驶员—汽车闭环系统的影响，进行了如下四个方面的工作

Choosing a appropriate control a bilinear singular closed loop system can be globally asymptotically stable.

同时，考查了控制受上下界约束时，选择适当的控制，使闭环系统全局一致渐近稳定。

Based on the process models and the desired closed-loop system responses, the analytical expressions of the tuning parameters of the primary and secondary controllers were proposed by means of first order Páde approximation, and then the digital PID controllers were obtained by using bilinear transformation method.

基于过程模型和期望闭环系统响应整定PID参数，采用一阶Páde近似纯迟延环节，以解析的形式推导出了主控制器和副控制器整定参数的表达式，并采用双线性变换法得到离散时间PID控制器。

It is shown that the closed-loop system is ultimately bounded on all signals.

理论分析证明了闭环系统的所有信号一致最终有界。

Expression can be acquired, and the uniformly ultimately boundedness of the closed loop system

应器为例的仿真结果也验证了控制器具有良好的控制特性。

A self-developed multi-functional brownout protector (MD WRJB-45/380) controlled by microcomputer. The product is a microcomputer controlled, and bi-closed-loop current feedback system.

介绍一种自行研制开发的WRJB-45/380型微电脑控制电机多功能节电保护器，该装置是一个微电脑控制的相位、电流双闭环反馈系统。

The relationship between PID parameter and the root of the characteristic equation of the closed loop control system has been found out directly.

本文直接找出PID参数与闭环控制系统的特征方程的根之间的关系，只要使特征方程的根在z平面的单位圆内任意取值，然后再求出相应的PID参数，则闭环控制系统必然是稳定的。

As long as the root of the characteristic equation is within the unit circle of z-plane and the corresponding PID parameter is got, the closed loop control system is sure to be stable. Although the root of the characteristic equation can vary within the unit circle of z-plane,different value may affect the control property differently.

本文所采用的这种确定PID参数的方法，虽然可以使特征方程的根在z平面的单位圆内任意取值，但各种取值情况对变风量空调系统的控制品质的影响却不同，因此，要对各种特征方程的根的取值情况进行寻优，本文采用遗传算法对特征方程的根进行寻优，从而使控制器的参数得以优化。

Features and innovations in this study:(1) Longest successive time scale of Precambrian samples is studied;(2) The environmental and biological significances of the difference between . the carbon isotopic compositions of kerogen and coexisted carbonate were discoved;(3) The difference of biogeochemical processes between Proterozoic closed and open sea system was considered in the disccussion;(5) It is first time to carry out the chemolysis and thermolysis of kerogen in Precambrian organic matter research.(6) It is first time to apply molecular organic geochemical data to the reconstruction of Proterozoic Rodinia Supercontinent.

此项研究具有以下特色和创新之处：(1)研究对象连续时间跨度最长；(2)研究内容涉及面较全面；(3)较早详细探讨了前寒武纪沉积有机质的分子特征与古环境和生物群落的演化关系；(4)独立推导和论证了δ〓C〓和δ〓C〓的差值的生物和环境的重要意义；(5)在前寒武纪有机质研究中区分了局部封闭环境下的生物地球化学循环过程与广域海环境下的生物地球化学过程的差异；(6)开展了前寒武纪干酪根化学和热降解研究；(7)开创性地将分子有机地球化学的数据应用于元古宙Rodinia超大陆的重建中。

The company has invested more than 6,000 million for dust transformation after transformation, ESP collection efficiency from 98% to 99.7% and reduce soot emissions by 3,000 tons / year;# 8,# 9 boiler flue gas desulphurization as a technical transformation project circular economy demonstration projects; invest in million-odd on-line monitoring system installed in flue gas to form an improved real-time closed-loop management.

该公司已投资改造后，粉尘改造6000多万美元，从3000吨ESP收集效率98％至99.7％，减少烟尘排放量/年；＃8，＃9锅炉烟气脱硫技术改造作为循环经济示范项目项目；百万元投资多在线监测系统安装烟气形成一个完善的实时闭环管理。

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。