查询词典 variable-density system

A decoupling generalized predictive control algorithm was presented in this paper. This algorithm was proposed to control the temperature-humidity system of a practical air-conditioning environmental chamber. By introducing absolute humidity as an intermediate variable,temperature and humidity of the system can be decoupled.

为保证多变量控制系统长期安全而有效运行，提出一种解耦GPC控制算法，该算法通过引入绝对湿度作为中间变量，将温、湿度耦合系统进行解耦，然后对解耦后的两个系统进行不同采样周期的GPC控制律设计，给出了该算法的仿真研究结果。

The system is partly a multivariable control system which means that one output action variable (e.g. chemical charge) is controlled from more than one source (e.g. two feed forward signals, one feedback signal and an operator bias input).

该系统是部分的多变量控制系统，就是说一个输出动作变量是由多于一个的源变量(比如两个前馈信号，一个反馈信号和操作员的偏置输入)来控制的。

In this paper, the control strategies of variable flow in secondary pump system and primary pump system in air conditioning were also discussed.

本文还探讨了空调二次泵系统和一次泵系统变流量的控制策略。

This paper discussed the present situation and existent problems of the auxiliary test system of variable frequency withstand voltage for cross-linking cable on-the-spot, as well as the designs and applications of auxiliary test system.

文章论述了交联电缆现场变频耐压辅助试验系统的现状和存在问题，以及辅助试验系统的设计和应用，介绍了辅助系统的作用和组成。

Keywords : variational theory, variable-independence, consistency , formalization, Axiomatic System of Variation, Formal System of Variation

进一步，我们发现，在鹫井久一郎、钱伟长和罗恩的工作中明示的或隐含的有关变量独立的"传统"的理解隐含着矛盾 [6， 9-11， 14]。

ABSTRACT With the development of installed capacity and power system interconnect scale, the importance of stable monitor and control is becoming more and more obvious. The phase angle is one of basic state variable of electric power system, so monitoring and controlling power angle and phasor of the bus voltage are the most important means.

随着电网装机容量的增大及电网互连规模的扩大，电网的稳定监视和控制越来越重要，而相角是反映系统最基本的状态变量之一，因此监视和控制发电机的功角和母线电压相量，将是电力系统稳定监视和控制最重要的手段。

The characteristic exponent based on a probabilistic dynamical system is calculated, which provides some useful information on unstable periodic orbits of the chaotic economic dynamical system. An effective controlling parameter is chosen by discussing the sign of the characteristic exponent. Furthermore, the control regions of the parameter variable are proposed. Therefore the controllable domain of chaos in the chaotic economic model can be obtained.

提出一种等价关系，计算基于概率的动力系统的特征指数，给出混沌经济动力系统的不稳定周期轨道的有用信息，通过讨论特征指数的符号，选择有效的控制参数，得到相应的控制参数取值范围，从而得到混沌经济模型中的参数变量的混沌控制域。

First, the state～space equation of the circular inverted pend ulum system was established based on the Lagrange Equation. On the base of that, the circular inverted pendulum was swung up by the energy control strategy, and the controller of the system was designed by the pole placement of the optimal control theory. Second, in order to realize the observation for the unknown vari ables, stable state observers were designed based on the equivalent principle of sliding mode variable structure.

该方案在采用 Lagrange 函数建立状态空间方程的基础上，利用能量控制策略实现自动起摆；采用最优控制理论中的极点配置法设计倒立摆系统的控制器；同时利用滑模变结构的等值原理设计观测器，实现对系统未知状态变量的观测。

The technique path of the research is : on the rules of obtainable of data, specialty, sensitivity, representative, characteristic of full-scale and perspicuity of indexes, used external statistic way which includes ways of a coefficient of variation, case cluster and relation analysis, variable cluster and subjective Delphi, sift from initial index system, and finally get a complete evaluation index system for labor relation which meet the external technique requirement and subjective theoretic and practical analysis.

本论文研究的技术路径为：以指标资料的可获得性，指标的特异性、敏感性、代表性、全面性和简明性为原则，运用包括变异系数法、样本聚类和相关分析法、指标聚类法等客观的数理统计方法和主观的德尔菲法，对初始的指标体系进行了筛选，最终确定了满足客观技术要求和主观理论经验的完整的劳动关系评价指标体系。

In this paper a method of using input - output sequences in a real system to identify a constant, multi-variable and stochastic linear system having unknown dimensions, system matrices and noise covariances is developed.

本文提出了利用实际系统的输入—输出试验数据，辨识具有未知维、参数阵和噪声协方差阵的定常、多变量、随机线性系统的方法。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。