查询词典 optimal control

The control system of a gas turbine represents a complicated non-linear system. Its optimum control can be reduced to a condition-constrained time-dependent optimal control issue, whose study involves a fairly high degree of difficulty.

燃气轮机控制系统是一个复杂的非线性系统，其最优控制是一个受状态约束的时间最优控制问题，对其研究的难度较大。

In the computational methods of TPBVP, in order to reduce some difficulties involved in solving a TPBVP via adjoint variables, we discuss a direct method in which state and control variables are indirectly parameterized, The method employs a recently developed direct optimization technique that uses a piecewise polynomial representation for the state and control variables, thus converting the optimal control problem into a nonlinear programming problem, which can be solved numerically.

在数值解法中，为了减少解决两点边值问题共轭变量带来的困难，主要讨论了将状态变量和控制变量进行参数化的一种直接方法，这种方法采用了近段发展起来的使用分段的多项式来代替状态和控制变量的直接优化方法，然后最优控制问题就转化成可以用数值方法解决的非线性规划问题，使得迭代初值更加容易选取。

To get the maximum thermal efficiency of the system, control algorithm adopts the combination of routine control and online self-searching optimal control .

在优化控制中用常规控制与热效率在线自寻最优控制相结合的方法，组成加热炉热效率最优控制系统，以实现系统热效率最大。

In order to reduce the effects of packet dropout on the system, a dropout compensator is added to the system, and a model for networked control systems with stochastic delays and dropout compensators is constructed, Based on this model, the sufficient conditions for the system asymptotical stability,γ suboptimum and optimum are given, and the output feedback control law for system H(subscript ∞) optimal control is obtained.

为了降低数据包丢失对系统稳定性的影响，在系统中增加了补偿器，并建立了具有丢包补偿器和随机网络诱导时延的NCS模型。在此模型的基础上，给出了系统渐近稳定和γ次优、最优的充分条件，并且获得了系统最优H控制的输出反馈控制律。

With the purposes to shorten development period of shield control system and avoid the unsafety of imperfect-designed control system when connected directly to the shield and at the same time, for the convenience of optimal design and remote failure diagnosing of the system, it is very important to develop a test bench for the shield control system.

为缩短盾构控制系统的研发周期，避免在控制系统设计不完善时直接与盾构联机所带来的不安全性，同时也为了便于系统的优化设计和系统的远程故障诊断，有必要研制盾构控制系统检测式验台。

In the last three chapters, according to the structure of the hydraulic servo system, an optimal control algorithm for dynamic control and an adaptive control approach of the system for the rolls to move synchronistically are presented.

根据轧机液压压下系统的特点提出了一种动态自寻优带钢同步控制算法和轧辊大行程运动时的自适应同步控制算法。

Now the urban freeway control are not implemented, signal control at intersections on the frontages is isolate for frontage, so coordinated optimal control strategies put forward in the paper will provide the basis of theories and applications.

在上述研究基础上，针对快速路交通的强非线性和不确定性，本论文选择具有模型形式限制性小，滚动式有限时段优化策略，反馈校正等特点的预测控制算法，实现快速路的主路和辅路协调控制。

Result Among 6 reagents, Dimethomorph, Huishuangte, Gold-ridomil and Miejuncheng all had good control effect on grape downy mildew. In the area where downy mildew was serious, Huishuangte had best disease control effect. In the area where disease was not so severe, Dimethomorph and Gold-ridomil were in the optimal control effect and the next one was Miejuncheng.

结果］6种药剂中，烯酰吗琳、灰霜特、金雷多米尔和灭菌成对葡萄霜霉病均有较好的防效，其中在霜霉病发生严重的地区，灰霜特防病效果最好，在发生较轻的地区，烯酰玛琳和金雷多米尔防效最好，其次为灭菌成。

objective the overall quantity of the examination section management and the establishment of the system is the key to guarantee the quantity and raise the examination level,which is needed by laboratory management and actual work.methods overall quality management of laboratory was divided into 3 parts,that was quality control before,during and after analysis.examination process was made standard in the construction and uparading of laboratory information management system,which ensured the optimal examination was chosed and samples quality control before analysis,perfect quailty control system and standardized management were used throughout the analysis,re-analysis and re-ensurance of the examination results were performed.results lims was constructed with the characteistics of perfect function,easy performing and effective management.conclusion lims rums smoothly and realize the overall quality management successfully.

在医学检验中，全实验室质量管理分为3个阶段，即分析前质量控制、分析中质量控制和分析后质量控制。在临床检验信息管理系统的网络建设、网络改造升级中规范检验流程，确保分析前医生从循证医学的角度选择最合理、最经济的项目检测，并控制护士标本的采集、保存与运送的质量；分析中，完整的质量体系和标准化、规范化管理始终贯穿于检验科的检测中。分析后，实验结果的再分析，再确认，保证合格报告的发出，保证实验结果及时发给临床后，临床医生能合理地分析报告，正确的运用数据，用于诊断和治疗。结果功能齐全、操作简便、高效管理的临床检验信息管理系统建立。结论该系统运行效果良好，更新完善了检验科的管理模式，较好的实现了全实验室质量管理。

Finally, based on the studies above, the characteristics of pantograph/catenary are analyzed and the active pantograph is modeled. By using the linear quadratic optimal control law, the design objective is to minimize the performance index, which is a function of the state variables representing the pantographs dynamic characteristic and the active control force. The control system is designed considering the complete state feedback.

最后，在此基础上，分析了受电弓／接触网系统的工作特点，建立了受电弓主动控制系统的数学模型，利用线性二次型最优控制策略，以给定性能指标为最小值为设计目标，性能指标为表征受电弓动力学特性的状态变量和主动控制力的函数，考虑了完全状态反馈的情况，进行了控制系统的设计。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。