查询词典 automatic control system

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。

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。

The results show that there will be slight decrease of the control efforts when the mean absolute value or the root mean square value of the optimal control force is taken as the maximum designed control force, while the maximum control force of MR damper can be decreased by 85% compared with the maximum optimal control force. The decrease in the designed control force can not only significantly increase the capability of MR dampers, but also reduce the dimension of MR dampers for pratical application in engineering.

研究表明，当设计值取最优控制力的平均绝对值或均方根值时，MR阻尼器的最大控制力比最优控制力的最大值降低了85%，而控制效果降低不多，可以满足对结构的控制要求；降低最大控制力设计值后，不但可以充分发挥MR阻尼器的出力性能，而且可以缩小MR阻尼器的设计尺寸，便于工程应用。

An instantaneous optimal semi-active control method is put forward. Combined sliding mode control with lyapunov's stability theory, the control weights matrix, which can minimize structural instantaneous energy, is designed. Simulation and shaking table test is conducted to validated the method's effectiveness. To solve combination explosion of controlled structural state encountered in high-rise building control, the semi-active control strategy, which can drive structural state point to reach the sliding mode switching band, is designed by using sliding mode control theory, and genetic algorithm is used to find the optimal semi-active switching to drive the structural state point to sliding mode switching band at prestissimo speed.

提出了一种瞬时最优半主动结构控制方法，利用滑模变结构控制理论和Lyapunov稳定性理论设计使结构瞬时能量最小的半主动控制权矩阵，仿真实例和振动台试验验证了本文所提方法的有效性和实用性；为解决在高层建筑半主动控制中半主动控制器状态组合爆炸的问题，利用滑模变结构控制理论设计在Lapunov稳定意义下使结构在运动状态空间中任一相点于以最快速率到达滑模切换带的半主动控制策略，并用遗传算法找出了最快到达滑模切换带的半主动控制切换组合。

After analyzing and comparing two kinds of current control methods of three-phase VSR: indirect current control and direct current control, the author employs the latter as main control scheme, which is to control the phase and amplitude of ac-side current directly, by using dual closed-loop control scheme, through sampling currents of phase a and b and converting them by 3s/2r to get active component and reactive component of ac-side current.

分析比较了三相电压型PWM整流器的两种电流控制方法：间接电流控制和直接电流控制。

An information recording disc having a burst cutting area (102) for recording control information for a reproducing apparatus by removing a reflective layer of the disc in a striped shape and a data recording area (104) for recording user data, wherein the burst cutting area (102) includes at least one BCA control information area and the BCA control information area comprises: an application identifier area (106) for identifying applications of control data; a data length area (108) for indicating data length of the control data; and an application specific data area (109) for recording the control data.

一种信息记录盘，具有突发分割区域（102），通过除去条带形的盘的反射层和数据记录区域（104），用于记录再现装置的控制信息，其中，突发分割区域（102）至少包括一个BCA控制信息区域，BCA控制信息区域包括：识别控制数据的应用程序的应用程序识别符区域（106）；指示控制数据的数据长度的数据长度区域（108）；记录控制数据的应用程序特殊数据区域（109）。

In order to overcome the shortcoming of PI controller in harmonics control, the repetitive control and PI control are combined and used in the closed-loop control of TSMC; The problem of conventional repetitive controller is pointed out and a modified repetitive control method is proposed: To avoid the influence of no-periodical disturbance on the control action of repetitive controller, the error caused by no-periodical disturbance is identified and discarded.

针对PI控制器对谐波控制的不足，将重复控制技术与PI控制相结合，应用于TSMC逆变级的闭环控制中；在此基础上提出了重复控制器的改进方案：对由非周期性扰动引起的误差不进行记忆，以避免其对重复控制器的控制动作产生干扰。

The induction motor stator-flux-oriented vector control scheme not only reduces the big dependence of its performances on the rotor parameters, such as in the rotor-flux-oriented vector control, but also eliminates the torque ripple produced by Bang-Bang control in Direct Torque Control. So the SFO vector control is a high-performance and robust induction motor control scheme.

异步电机按定子磁场定向的矢量控制克服了按转子磁场定向的矢量控制系统对转子参数的依赖性，又没有直接转矩控制中的砰—砰控制带来的转矩脉动，是一种鲁棒性良好的高性能异步电机控制策略。

This book analyzes the link in the procurement of quality control, budget control, business execution, control, payment control, procurement control methods; in the sales cycle cost management, credit control and rebate management, sales forecasts, sales plans, sales commission, such as reusable packaging management; in the inventory management aspect of the batch, serial number management, retention management, and multi-units, special inventory management and other special treatment.

本书分析了在采购环节的质量控制、预算控制、业务执行控制、付款控制等采购控制方法；在销售环节的价格管理、信用控制、返款管理、销售预测、销售计划、销售佣金、可重复利用包装物等的管理；在库存环节的批次管理、序列号管理、保持期管理、多计量单位、特殊库存管理等的特殊处理。

It's bell can reach over a meter in diameter.

它的身体最大可以达到直径1米多。

Now they are overdue and I shall have to pay a fine.

现在他们过期了，我不得不付罚款。