子控制
- 与 子控制 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The sub-node of wireless control is connected at a derailer at the side of the rail.
它是由一组传感器模块、无线传输模块、电源模块和工业控制计算机组成,无线传输模块包括无线收发汇聚节点、无线收发子节点和无线控制子节点,传感器模块连接无线收发子节点并通过传感器安装夹具安装在铁轨上,无线控制子节点连接设置在铁轨旁的脱轨器,无线收发汇聚节点连接工业控制计算机。
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How to calculate the synthesis operator is the key problem of controlled illumination prestack depth migration. In this paper the inverse time focusing operator is synthesized based on the traveltime calculation method of finite difference approach, and with this synthesis operator the authors calculate the focusing point controlled illumination prestack depth migration using Fourier finite difference. The test results of Marmousi model show its effectiveness and the great advantage of improving computational efficiency.
进行控制照明叠前深度偏移的关键是合成算子的选择,笔者基于有限差分的走时计算方法合成了逆时聚焦算子,基于该合成算子利用傅里叶有限差分法进行了聚焦点控制照明叠前深度偏移,针对Marmousi模型的试算结果表明了该方法的有效性及其在提高计算效率方面的巨大优势。
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In chapter 2, we define a new operator—the minimal operator on martingale space, it's well known that the maximal operator controls where given martingale f is large, intuitively, we say that the minimal operator controls where a martingale is small.
第二章引入了鞅空间上极小算子mf的概念,众所周知,极大算子可以控制一个"较大"的鞅,那么形象地说,极小算子就是用来控制那些"较小"的鞅,因此,在研究关于极小算子的加权不等式时,很自然地要估计诸如〓,log mf等算子的值。
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In this topic, the dynamic analysis methods for piezoelectric vibrator are studied systematically based on the theoretical model, FEM numerical experimentation and FEM governing equation for given compound-mode vibrator, and some valuable conclusions are obtained. The main work accomplished is summarized as follows: 1.Elaborate the main modeling methods for piezoelectric vibrator and the significance and necessity to study the dynamic characteristics of piezoelectric vibrator which emphasize the urgency of this paper. 2.Take the bending deformation induced by piezoelectric ceramic as example, the energy transfer mechanism of electric energy to mechanical energy are analyzed; the motion and force transfer mechanism are analyzed for the longitudinal-bending vibrator. 3.Based on mode assumption and Hamilton principle, the coupling model of piezoelectric vibrator of linear USM is built; moreover, the equivalent circuit model is obtained and a coupling equation represents the relation between electric parameters and mechanical parameters is derived which provides foundation to match the vibrator and driving circuit. 4.Combine the constitutive equation of piezoelectric ceramic with elastic-dynamical equation, geometric equation in force field and the Maxwell equation in electric field and the corresponding boundary condition equation, the FEM control equation for piezoelectric vibrator of USM to solve dynamic electro-mechanical coupling field is established by employing the principle of virtual displacement. The equation lays the foundation to study the non-linear constitutive equation of piezoelectric ceramic driven by high-power. 5.Define the dynamic indexes of characteristic of vibrator and carry out variable parameters simulation by calculating the model parameters and the electric characteristics of vibrator are simulated according to the equivalent circuit model. By numerical experimentation, the working mode of vibration of vibrator and the shock excitation results of the working frequency band which provides the mode frequency to realize bimodal are analyzed. Detailed calculation of the electro-mechanical coupling field parameters is made by programming the FEM control equation.
本课题从理论模型、有限元数值试验、有限元控制模型等方面以复合振动模式振子为例对超声电机压电振子的动力学特性及其分析方法进行了全面系统地研究,得出了许多有价值的结论,主要概括如下: 1、阐述了目前针对超声电机压电振子的主要建模方法,对压电振子动态特性的研究意义和必要性进行了论述,突出了本文研究内容的迫切性; 2、以压电陶瓷诱发弹性体发生弯曲变形为例,分析了压电陶瓷通过诱发应变来实现机电能量转换的机理;对基于纵弯模式的压电振子的运动及动力传递机理进行了分析; 3、基于模态假定,利用分析动力学的Hamilton原理,建立了面向直线超声电机压电振子的机电耦合动力学模型,并据此建立了压电振子的等效电路模型,导出了电参量与动力学特性参量的耦合方程,为压电振子与驱动电路的匹配提供了依据; 4、从压电陶瓷的本构方程出发,综合力场的弹性动力学方程、几何方程、电场的麦克斯韦方程以及相应的边界条件方程,采用虚位移原理,建立了压电振子动态问题机电耦合场求解的有限元控制方程,为研究其大功率驱动下的非线性本构模型奠定了基础; 5、界定压电振子的动力学特性指标,对压电振子的机电耦合动力学模型参数进行计算及变参数仿真;依据等效电路模型,对压电振子的电学特性进行了仿真分析;通过有限元数值实验,对压电振子工作模态附近的模态振型及工作频率附近的频段进行了激振效果分析,找出了实现模态简并的激振频率;利用有限元控制方程,通过编程计算,对压电振子的力电耦合场参数进行了详细计算,得出了一些有价值的结论。
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The effect of the natural enemies were assessed according to the analysis, which revealed that the parasitoids played more significant role than the predators, and that Citrostichus phyllocnistoides which had the closest synchrony and sympatry with citrus leafminer P.citrella, should be considered as dominant natural enemy, and be protected and utilized to control the citrus leafminer. Wide niche and distribution as Orius sauteri has, its narrow overlap showed the less close sympatry and synchrony as well as impossibility to control the prey.
寄生性天敌群子强于捕食性天敌群子,表明在自然环境中寄生性天敌群子对桔潜蛾的控制作用强;捕食性天敌小花蝽Orius sauteri虽然食谱生态位宽,但生态位重叠却小,说明这种天敌尽管分布广泛,可在时间和空间上没能有效"跟随"害虫的发生,对害虫控制作用不大;寄生性天敌短腹桔啮小蜂Citrostichus phyllocnistoides与桔潜蛾在时间上的同步性和空间上的同域性均优于其它天敌,为优势天敌,应加以保护和利用。
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This paper discusses the dynamical characters of the RC mega-sub controlled structure. It is concluded that the deformation and the acceleration of vibration-absorption megaframe structure can be well reduced under the windward pulsoting wind load, through choosing the reasonable the member parameter and the accessional columns stiffness of the structure. So the safety of the structure is enhanced, and the comfortable need is satisfied. So the new mega-sub controlled structure is a kind of ideal super tall building structure configuration, it will have the bright future.
结果表明:通过合理选择巨—子型控制结构的主、次框架的主要结构参数及附加柱刚度,可以较好的控制巨—子型控制结构在顺风向脉动风荷载作用下的位移响应和加速度响应,既提高了结构的安全性,又可以满足舒适度的要求,从而证明了本文提出的这种新型的巨—子型控制结构是一种理想的超高层建筑结构形式,其将具有广阔的发展前景。
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Control and management system of facilities for smart home ;2. In allusion to lacking of a universal standard criterion and interface protocol on domestic smart home network , CEBus, home bus protocol, the design for home gateway and bus interface criterion are mainly discussed.
针对国内智能家庭网络缺乏统一的标准规范和接口协议,重点论述了消费总线、家庭总线协议,以及家庭网关的设计和总线接口标准,提出了家庭网络由高速信息子网和低速控制子网组成,控制子网提供的服务和应用在智能住宅中最具实用价值,也是智能住宅设计中的难点所在。
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Fist, mode analysis is accomplished, and stiffness influence of the structure by the member parameter and the accessional columns are analysed. Then the numerical value of the pulsoting wind load was used, the time history contrastable analysis between mega-sub controlled structure and general megaframe structure has been accomplished. Finaly, the influence of vibration-controlled efficiency under the different member parameter of vibration-absorption megaframe structure is analysed.
首先进行了模态分析,讨论了钢筋混凝土巨—子型控制结构的主要结构参数及附加柱刚度对结构整体刚度的影响:利用脉动风荷载计算机模拟的荷载值,并对它和一般的巨型框架结构进行了脉动风荷载下的时程对比分析,讨论了钢筋混凝土巨—子型控制结构的主要结构参数对减振效果的影响,研究了钢筋混凝土巨—子型控制结构的动力特性。
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Methods Human EGFR cDNA fragment was subcloned in the oppos ite orientation to the cytomegaloviral promoter and inserted into a E1/E3-delet e d type 5 adenoviral vector to obtain AdE5 construct which expresses EGFR antisen se RNA.
人EGFR的cDNA片段被反向亚克隆入E1/E3缺失的 5型腺病毒载体中而得到AdE5 ,EGFR反义RNA的表达由CMV启动子控制。
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According to the self-trapping that takes place in both transversedimensions,we show that an addressing optical switch is possible bychanging the lateral displacement of the beam,that the soliton wavelengthdivision multiplexing devices may be made by using the self-deflection ofspatial solitons,and that soliton devices with two or three controlledparameters are made by using screening-photovoltaic solitons for shortcircuit or closed circuit with an external resistor.
根据光孤子的自陷获仅发生在横向上,由此我们提出:控制横向空间光孤子的方法实现光的快速互连切换光开关;用短路或有外电阻的屏蔽光伏孤子研制具有两种或三种控制参数的孤子器件;用控制空间光孤子的自偏转的方法研制波分复用器。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力