反馈耦合

On the basis of other scholoar's research, the author makes systematic、complete and throughgoing research on characteristics and predication of strata movement for the first time in this paper. The creative work makes up land space in domestic and abroad. The author's major work are as follows: 1 According Haken's synergetics view, the author researches the non—linear self —organized evolving process of refeeding, hybriding and cooperating features of internal varables of the roof movement for the first time, and makes an important conclusion that it will appear chaos at the critical state.

本文在前人研究的基础之上，初步用非线动力学的观点，对岩层运动的动力学特征及预测方法进行了较全面、系统的研究，主要工作如下： 1 根据Haken的协同论观点，初步研究了顶板运动过程中系统内部变量的反馈、耦合、协作的非线性自组织演化过程，得到了顶板运动在突变的临界状态呈现出弱混沌性，其力学行为难以准确预测的结论，较好地解释了岩层突变灾害预测困难的内在原因，并为选择合理的预报时刻，提供了依据。

The invention discloses an optical-fiber all-optical code converter, comprising a temperature control circuit as well as optical-fiber Mach-Zed interferometer, heat sink, semiconductor refrigerator, thermosensitive resistor and radiator, where the interferometer is composed of two cascaded 3dB couplers on the heat sink, the relation between length difference delta L of two arms of the interferometer and generated delay time difference delta T is that delta L=c.delta T/n, where c is light velocity in vacuum and n is refractive index of optical fiber; the thermosensitive resistor is used to detect temperature of interferometer, the temperature control circuit is used to compare feedback voltage of the thermosenstive resistor with a given voltage to regulate working current of the semiconductor refrigerator, and the semiconductor refrigerator refrigerates or heat two arms of the interferometer by the heat sink.

本发明公开了一种光纤型全光码型转换器，它包括温控电路和位于密封盒内的光纤型马赫-泽德干涉仪、导热热沉、半导体制冷器、热敏电阻以及散热片；干涉仪由位于导热热沉上的二个3dB耦合器级联而成，两臂的长度差ΔL与产生的延时差ΔT之间的关系为ΔL＝c。ΔT/n，c为真空中光速，n为光纤折射率；热敏电阻用于对干涉仪的温度进行探测，温控电路用于比较热敏电阻反馈的探测电压和设定电压，对半导体制冷器的工作电流进行调节，半导体制冷器通过导热热沉对干涉仪两臂同时进行制冷或加热。

The basis builds tigidity and model of system of float of stretch orbit magnetism, through comparative analysis, designed improvement double-loop PID algorithm, carry the condition variable with appropriate feedback, can solve Ou smoothly to system of vibration of car course coupling, implementation stabilizes control.

根据建立刚性和弹性轨道磁浮系统模型，经过对比分析，设计了改进的双环PID算法，通过反馈合适的状态变量，能够对车轨耦合振动系统顺利解耦，实现稳定控制。

Considering the characteristics of coke oven, the combusting MAS control model is given combining with forward and feedback, control and operation manager.

面对焦炉加热系统的多变量、耦合特性，提出前馈与反馈相结合、控制与操作管理相融合的焦炉加热MAS控制模型。

Emphasis is placed on analyzing the influences of friction characteristics on hydraulic motor, dynamic coupling between gimbals, resolution ratio error and setting error of feedback measurement element on accuracy of electro-hydraulic position servo system for a certain simulation turntable.

针对具体的仿真转台电液位置伺服系统，着重分析了液压马达摩擦非线性、框架间动力学耦合、反馈测量元件的分辨率误差和安装误差对转台电液位置伺服系统精度的影响。

5The coupling between ohmic heating field coil and plasma is analyzed using equivalent transformer model.

5利用变压器等效模型分析了加热场线圈电流和等离子体电流之间的耦合关系，设计和完善了等离子体电流反馈控制系统。

Also, we select the signal collecting circuit of three output polars, the coupling circuit using capacitance and resistance, the alternating amplify processing circuit, the positive feedback retardation comparsion, the driving circuit of output current and the stabilization voltage supply circuit.

选择了InSb磁阻三端输出型信号采集电路，阻容耦合型交流放大电路，正反馈迟滞型电压比较器和大电流推挽驱动电路及稳压电源电路。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。