查询词典 admissible control

The attention is focus on presenting the sufficient conditions for the existence of the memoryless state feedback guaranteed cost controller by linear matrix inequality technology, and the design of the guaranteed cost control law such that the closed-loop system is asymptotically stable and has a specified upper bound of the closed-loop cost function value for all admissible uncertainties.

利用线性矩阵不等式技术，给出了保性能控制律存在的充分条件，所设计的无记忆状态反馈保性能控制律，可以使闭环系统渐近稳定，且闭环性能指标在允许的范围内不超过某个确定的上界。

One of the important classes is Pritchard-Salamon system with unbounded admissible input operator and output operator. Keulen[4]and Curtain[5] has finished excellent work, but they added smooth condition when they transform the solution of H∞-Control into solving two algebraic Riccati equations.

其中重要的一类是具容许无界输入和输出的Pritchard-Salamon系统，这方面已有Keulen[4]，Curtain[5]等人的工作，不过他们在将次最优H_∞-控制器存在问题转化为相应Riccati方程解的存在问题时附加了"光滑性条件"。

The objective is to design a feedback control law such that the closed-loop system is both quadratically stable and strictly passive for all the admissible uncertainties.

目的是设计一个反馈控制器使得闭环系统是二次稳定，同时具有严格无源性。

For the aim of saving energy and optimizing control of chilled systems, the performance of VWV systems and characteristics of control systems were analyzed based on the simulation. According to the characteristic of the monitored parameters and controlled variables in VWV systems, three online optimal control strategies were proposed and validated:(1) Optimal strategy for on/off control of chillers according to the ratio of secondary flow rate to primary flow rate.(2) Optimal strategy for the control of secondary pump according to value positions of auto-controlled AHU vales. And (3) Optimal strategy for supply chilled water temperature control of chillers according to valve positions of auto-controlled AHU valves and working status of secondary pump.

为达到节能和优化系统控制的目的，在楼宇空调水系统及其局部控制仿真分析的基础上，针对变流量系统监测点和可调参数较多的特点，提出并验证了3个实时优化控制方案：根据初级和二级冷谋水流量的比率，实时优化多台冷水机组的启／停控制；利用AHU自动控制水阀的阀位信息，实时优化二级水泵的控制；利用AHU自动控制水阀的阀位信息以及二级泵的工作状况，实时优化冷水机组出水温度的控制。

Electric control valve for variable displacement is a novel control component in automotive air conditioners, which turns mechanic capacity control into electric control. It can use optimal algorithms to control capacity, and has interface with automotive systematic control unit. It has fantastic foreground.

变排量压缩机电动控制阀是目前在轿车空调系统中出现的一种新型容量控制元件，它完成了容量控制由机械式调节到电动控制的转化，不仅能够采用优化控制算法实现制冷系统的多元控制，而且为轿车整车系统控制提供了接口，市场前景很好。

So in this paper based on the characteristics and the optimum state theory of the vehicle, some kinds of control schemes are compared and discussed, and the fuzzy PID control scheme is adopted at last. The relation between air-cushion pressure and fan rotational speed on the optimum driving state is studied. The cushion pressure is used as controlled variable and the fan revolution is used as regulated variable. And transducer and fan motor are actuators.Based on the structure and operating properties of half-tracked air-cushion vehicle, the control system scheme and structure are presented. A control scheme using the self-tuning PID fuzzy logical controller is adopted. Fuzzy rules are set up and some researches have been done for fuzzy tuning method. At the same time the real-time measurement scheme by computer control is proposed, and electric circuits are designed. In the control system of half-tracked air-cushion vehicle cushion pressure P〓 is used as controlled variable and the fan speed n〓 as regulated variable.

因此本文以半履带式气垫车的特性和最佳工作状态理论为指导，通过对各种控制方法的比较与探讨，提出采用模糊PID控制方案，并且研究了在最佳工作状态下垫压及风机转速的关系，提出气垫压力作为控制参数，变频器和风机电机为执行机构，风机转速为调节量；主要进行了自整定模糊PID控制器的设计，研究了自整定PID模糊控制器的实现方法，编制了模糊控制规则，制定了模糊控制参数查询表，并分析了影响自整定模糊控制器相关的影响因素，确定了模糊控制表；为了实现半履带式气垫车的自动控制，还提出了计算机模糊控制系统的原理与结构，设计了相应的测量电路与控制软件。

Single loop instantaneous voltage feedback control and multiple loop feedback control, which can be realized by digital method or analogue method, are normal control strategies of inverter. The controller's performance of a same control strategy designed by different designers is different This paper makes out uniform analysis and design theory of inverter control strategies with pole-assignment technique of state-space theory for the first time. It is firstly proposed that controller parameters being equal to control system orders is the base of realizing high performance inverter. Design and performance comparability of various controllers is presented with uniform pole-assignment method.

本文首次采用状态空间理论的极点配置技术，对逆变电源的几种控制策略进行了统一的分析和设计，首次提出控制器控制参数与控制系统阶数相等是高性能逆变器控制实现的基础，并通过极点配置这种统一的设计方法对各种控制器进行了设计和性能比较，分析了要考虑的一些非理想因素的影响。

The method comprises: A, obtaining service area of user terminal, access and call status control node address of user terminal and session control identifiers of the access and call status control node through domain name node; B, user terminal sends a register request to access and call status control node which acquires the user terminal safety information from distribution apanage user server and performs safety information authentication between user terminal and the access and call status control node; C, the call and status control node modifies user terminal status in distribution apanage user server and downloads every kinds of service information of the user terminal.

通过域名服务节点，获取用户终端所在服务区域信息、和用户终端所属的接入呼叫状态控制节点的地址及该接入呼叫状态控制节点的会话控制标示符；B。用户终端向所述接入呼叫状态控制节点发起注册请求，由所述接入呼叫状态控制节点从分发归属地用户服务器获取该用户终端的安全信息，并进行用户终端与所述接入呼叫状态控制节点之间的安全信息认证；C。所述接入呼叫状态控制节点修改所述分发归属地用户服务器中该用户终端的状态，并下载该用户终端的各种业务信息。

To give the definition of the mass concrete and to concrete\'s cracks together with practical meanings of control ,and give a brief review on the research in the field at home and abroad, at last, methods to control temperature crack of the mass concrete from several aspects such as design measures,concrets material, construction schedules.etc are summed up; To explain the physical mechanics of the concrete and computing methods-Difference Method and Finite Element Method, and illustrate the application of their specific methods repectively;Several temperature factors that can influence the temperature stress of mass concrete baseplate are analyzed. The influence degree of temperature factor can be got through the ANSYS simulation computation the control of temperature can control the temperature stress, consequently control the temperature crack of mass concert baseplate; through the influence of the crack resistance ability of mass concrete baseplate which takes the reinforcement as a part is analyzed. By ANSYS simulation, the best suited volume ratio of reinforcement is found out, at same time the layout of reinforcement with the same volume ratio can also affect the resistance ability of mass concrete baseplate. Sum up of above analysis, anti-crack function of steel bar in early mass concrete baseplate is obvious, so it\'s necessary to consider beneficial effect of construction steel bar in research of temperature control on mass concrete baseplate.

本文先容了大体积混凝土及混凝土裂缝的基本概念，对国内外在这个领域里的研究现状作了扼要叙述，并从结构设计、混凝土材质、施工措施等方面总结了大体积混凝土温度裂缝控制的方法及防止措施；阐述了混凝土的基本物理力学性能，总结了大体积混凝土温度计算的方法——差分法和有限元法，并分别举例说明其具体应用的方法；分析了影响大体积混凝土底板温度应力的几种温度因素，利用ANSYS模拟计算，得出了每种因素的影响程度，通过分析提出了在这几种温度影响因素下如何通过控制温度以达到控制温度应力从而来控制裂缝的具体建议；针对大体积混凝土基础底板中配筋的不同对混凝土底板抗裂能力的影响不同，利用ANSYS进行模拟分析，得出底板中最合适的体积配筋率，同时分析了在相同体积配筋率下钢筋的具体布置对大体积混凝土基础底板抗裂能力的影响，分析表明，配置钢筋对混凝土结构的开裂阻止作用明显，在研究大体积混凝土温度裂缝题目时，要考虑钢筋在其中的有利作用。

Because any reports on the active control of rotating disk haven't be seen in China up to now, and this experiment research is important, so the complete set of active control system of rotating disk are built independently. The push-pull type electromagnet is applied to control the vibration of the circular disk. The power amplifier circuit that can respond to wide scope in frequency from DC to AC is designed by improving the existing circuit. The sensor signal is first low-pass filtered, then the proportional control plus the differential control circuit easy used in practice are applied to finish the more effective control. The electromagnetism shield is used as possible to decrease the signal disturbance from the electromagnet to eddy sensor.

考虑到目前国内尚未见到有关旋转圆盘振动主动控制的相关报导以及实验的重要性，自行设计制作了一整套旋转圆盘振动主动控制系统：提出并采用推拉型电磁作动器来控制圆盘的振动；在改进现有电路的基础上，自行设计了具有较理想特性的驱动电磁作动器的功率放大器；根据实际控制环境的特点，设计了先进行低通滤波，再采用比例和实用的近似微分电路构成的控制器，并采用了电磁屏蔽来减小电磁铁对传感器的干扰，以实现更有效的控制。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。