查询词典 electric circuit
- 与 electric circuit 相关的网络例句 [注:此内容来源于网络,仅供参考]
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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 hot water feedway concludes sub control, keyboard circuit, display circuit, control driven circuit, signal amplifier, shaping circuit, A/D translation circuit, current switch S, temperature sensor W1, temperature sensor W2, temperature sensor W3, water-level sensor H1, electric control valve Y1, electric tee control valve Y2, electric control valve Y3, pump M and heater band.
本发明涉及一种电水箱,特别涉及一种不浪费热水管中存留的冷水直接为用户提供热水的电水箱热水直供装置,它包括微控制器、键盘电路、显示电路、控制驱动电路、信号放大、整形电路、A/D转换电路、水流开关S、温度传感器W1、温度传感器W2、温度传感器W3、水位传感器H1、电控阀Y1、三通电控阀Y2、电控阀Y3、水泵M和加热带。
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Can have many kinds of profiles, like the triangular wave, the saw-tooth wave, the rectangular wave (including square-wave), the sine wave electric circuit are called the function signal generating device.
能够产生多种波形,如三角波、锯齿波、矩形波、正弦波的电路被称为函数信号发生器。
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This design has the periphery electric circuit simply, the red-tape operation nimble and the debugging is easy and so on the characteristic.
该设计具有外围电路简单,程序修改灵活和调试容易等特点。
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220Volts/50Hz dual-line electric circuit. 5 high-speed elevators, Domestically leading Yuanda central air-conditioning system.
220伏特/50赫兹双线电路系统、5部高速客用电梯,远大8型中央空调系统,国内最先进。
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The design is divided into four modules: data acquisition, data handling, keyboard electric circuit and the display module.
该设计分四个模块:数据采集、数据处理、键盘电路和显示模块。
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Pass to expand 8155 complete the keyboard manifestation electric circuit.
通过扩展8155H完成键盘显示电路。
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Is opposite in the traditional naval vessel intercommunication system, this system's intellectualized degree, the electric circuit module's type and the technical complex degree greatly increase, various functional module needs to be able to realize the basic active status examination under the intelligent main line's support.
相对于传统的舰艇内部通信系统,该系统的智能化程度、电路模块的种类和技术复杂程度都大大增加,各功能模块需要在智能总线的支撑下才能实现基本的工作状态检测。
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This paper mainly discusses the operation principle of hydraulic disc brake ,the constitution of on-line examination and the designs of electric circuit,machine and software partial.
主要论述了液压盘式制动器的工作原理和在线检测系统的组成,以及检测系统电路原理、机械部分和软件部分的设计。
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This article has designed a modern observation and control electric circuit in the fuel gas industry dry kiln temperature monitoring the application system.
本文设计应用了现代监控电路,在工业燃气炉温度监控系统。
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。