电缆隧道消防PLC控制系统

以武钢第三炼钢厂电缆隧为例，介绍了中编程序控制器（ＰＬＣ）的消防自动控制系统的构成以及ＰＬＣ系统配置、通讯系统的软硬件设计特点，并预示电缆隧道消防系统发展的趋势。     

论经理人员工作效益的滞后性

效益滞后是经理人员工作的基本性质，文章以信息经济学为理论基础，并采用信息论的方法对经理人员工作效益滞后性的内在原因和机制进行了深入的探讨，然后用控制论的方法对决策滞后系统建模，并作进一步分析。     

Integrated VP-Based Control Strategies for ATM Survivable Networks

ＩｎｔｅｇｒａｔｅｄＶＰ－ＢａｓｅｄＣｏｎｔｒｏｌＳｔｒａｔｅｇｉｅｓｆｏｒＡＴＭＳｕｒｖｉｖａｂｌｅＮｅｔｗｏｒｋｓ￥ＣｈｅｎＳｈａｎｚｈｉ；ＣｈｅｎｇＳｈｉｄｕａｎ；ａｎｄＣｈｅｎＪｕｎｌｉａｎｇ（ＳｔａｔｅＫｅｙＬａｂｏｒａｔｏｒｙｏｆＳｗｉｔ...     

集群制移动通信系统在铁路公务通信网中的应用

介绍了铁路集群移动通信网的网络构成、网络功能、工作方式及信令方式等等，指出了集群移动通信系统是一种新型的调度信息系统，已在铁路公务通信网中大量使用。     

快速轴流工业CO_2激光器的自动气压测控系统

简述快速轴流工业CO2激光器基本工作原理以及建立气压自动控制系统的必要性，对气压测控系统的设计原理进行了分析、并且提出实现这一控制过程的最佳设计方案。     

中立型线性控制系统的最优控制

本文将就形如　的中立型线性控制系统进行深入讨论，给出此类系统的最优控制的最大值原理，并举例说明这一重要结论在经济管理系统中的应用。     

Periodic maintenance and repair rate control in stochastic manufacturing systems

In this paper, we consider a periodic preventive maintenance, repair, and production model of a flexible manufacturing system with failure-prone machines, where the control variables are the repair rate and production rate. We use periodic preventive maintenance to reduce the machine failure rates and improve the productivity of the system. One of the distinct features of the model is that the repair rate is adjustable. Our objective is to choose a control process that minimizes the total cost of inventory/shortage, production, repair, and maintenance. Under suitable conditions, we show that the value function is locally Lipschitz and satisfies an Hamilton-Jacobi-Bellman equation. A sufficient condition for optimal control is obtained. Since analytic solutions are rarely available, we design an algorithm to approximate the optimal control problem. To demonstrate the performance of the numerical method, an example is presented.Research of this author was supported by the Natural Sciences and Engineering Research Council of Canada, Grant OGP0036444.Research of this author was supported in part by the University of Georgia.Research of this author was supported in part by the National Science Foundation, Grant DMS-92-24372.     

Optimal control of stretching process of solar arrays on spacecraft using wavelet expansion method

The optimal attitude control problem of spacecraft during its solar arrays stretching process is discussed in the present paper. By using the theory of wavelet analysis in control algorithm, the discrete orthonormal wavelet function is introduced into the optimal control problem, the method of wavelet expansion is substituted for the classical Fourier basic function. An optimal control algorithm based on wavelet analysis is proposed. The effectiveness of the wavelet expansion approach is shown by numerical simulation. This work is supported by the National Natural Science Foundation of China.     

Adaptive Robust Tracking for Flexible Spacecraft in Presence of Disturbances

The paper deals with trajectory tracking for a flexible spacecraft, subject to a gravity-gradient disturbance, under parameter uncertainties. The controls are gas jets and reaction wheels, and the measured variables describe the attitude and angular velocity of the rigid part. The flexible dynamics is treated as an additional disturbance acting on a rigid structure. First, an adaptive control is designed with only the gravity-gradient disturbance acting on the spacecraft; second, it is proved to be effective also in the presence of disturbance due to the flexibility, provided that appropriate robustness conditions on the controller gains are satisfied. These conditions use partial knowledge of the parameters describing the elastic dynamics. Simulations show the good performance of such control scheme and demonstrate its applicability even in the presence of input saturation.     

世妇会IBC电视转播系统设计

本文作者参与了世妇会ＩＢＣ电视转播系统的设计，施工，测试及运行的全部过程，文章详细介绍了系统的总体要求，基本方案，设计及运行，以及由此得出的几点经验。