反馈耦合

The theory of "harmonious forest farm" reckons that:①State-owned forest farm is an exoteric complex-system, which is the coupling of forest ecosystem, forestry economic system, and social system in forest farm;②Harmonious forest farm is the farm constructed under the background of socialist market economy and building a moderately prosperous society;③The features of "harmonious forest farm" are the development of production, the prosperity of life and good ecological environment;This farm is a modern state-owned forest farm, the symbols of which are the high value of itself, the good benefits of wokers and the abundance of forest resources;④The key of it is the harmony of farm and society, farm and environment as well as farmitself——that is to say,"harmonious forest farm" should aim to meet the needs of the country and thesociety; forest management should put maintaining and enhancing biodiversity, forest ecosystem health and integrity to the center; inside the forest farm, there should form the mechanism of balancing interests and learning mechanism for sharing at the core of the executive feedback mechanism of forest management, advancing the workers to form a comradely mutual aid relationship.

其要点是：①国有林场是开放的复杂系统，它由森林生态系统、林业经济系统、林场社会系统耦合而成；②和谐林场是在社会主义市场经济和全面建设小康社会背景下建设的林场；③和谐林场是以生产发展、生活富裕、生态良好为特征，以国有林场价值高、林场职工福利好、森林资源丰富为标志的现代国有林场；④和谐林场的关键是要求林场与社会、林场与环境以及林场自身达到和谐，即"和谐林场"必须以满足国家与社会的需求为目的，在森林资源经营上，始终以维持与提高生物多样性、森林生态系统的健康与完整为中心，在林场内部形成以森林经营方案执行反馈机制为核心的利益均衡机制和学习共享机制，促进林场干部职工形成同志式互助关系。

And with virtual prototyping technology, dynamic behavior of the contactor can be gotten.

该文针对一种新型带反馈的智能接触器，提出了2组周期性相互转换的方程组，耦合了电路、电磁场和可动部分摩擦的影响，并采用虚拟样机技术，研究其闭合的动态过程。

The formation process of corrugation is the feedback mechanism of vehicle-track coupling dynamics and rail damage mechanism.

波磨的形成过程实际上是一种由车辆—轨道耦合动力学和钢轨破坏机理构成的反馈机制，其中轮／轨关系作为联系机车车辆系统与轨道系统的关键环节，是构成这种机制的重要内容，属于接触问题。

In the case of two kinds of chaotic observes, one is constructed by differential form, the other is constructed by linear and nonlinear feedback synchronization.

混沌观测器的设计有两种类型，一类基于微分形式构造；一类是塞于耦合系统线性与非线性反馈同步实现的。

The controller receives, analyzes and processes the command input by operator via the man-machine interface, to adjust and control the controllable light signal generator according to the analysis processing result and the spectrum result checked by the light checker, the controller outputs the adjustment and result via the man-machine interface to the operator, to output light signal for the result of adjustment and control on the controllable light signal generator, via the light coupler to be coupled partly and feedback to the light checker to be checked, thereby forming a closed-circuit, while the light signal coupled to the light output via the light coupler reaches user target spectrum demand.

本发明公开了一种实现光信噪比可调节的光信号源装置及控制方法，所述装置包括：控制器、人机接口、可控光信号发生器、光耦合器、光信号检测器、光信号输出口；控制器接收操作者输入给人机接口的指令并分析和处理，运用分析处理结果、并结合光检测器检测的光谱结果数据来调节和控制可控光信号发生器，控制器将调节过程和调节结果通过人机接口输出给操作者，对可控光信号发生器调节和控制的结果输出光信号通过光耦合器耦合一部分又反馈给光检测器检测，这样形成一个闭环控制，使得通过光耦合器耦合到光输出口的光信号达到用户目标光谱要求。

Then, based on the relationship between the strength of self-relation of signal and strength of its random, a method of control spatiotemporal chaos in CML is proposed by feedback of spatiotemporal delay.

首先研究了用多级时间延迟反馈控制耦合映象格子中的时空混沌，给出了实现时空不动点稳定控制的条件，讨论了被控时空周期轨道与控制参数之间的关系；第二是根据信号的自关联度与随机度之间的关系，提出了时空延迟反馈控制法。

The stable and reliable operation voltage of the probe can be given by the following methods:(1) 20% light coupling efficiency is obtained by direct coupling of LD-optical fiber.(2) The light power is transmitted by multi-model optical fiber.(3) The largest photo-electric conversion efficiency is achieved by selecting the transformer regulation of step-up transformer.(4) The stable light intensity is achieved by using LD light feedback of driving circuit and refrigeration.

通过下述方法可提供稳定、可靠的探头工作电压：LD—光纤的直接耦合方式，可实现20％左右的光耦合效率；采用多模光纤传输功率；选择升压变压器最佳变比提高光电转换效率；采取LD驱动电路光反馈以及致冷措施使其发光幅值稳定。

Resultantly, the individual warm/cold events in ENSO cycle appear to be partially locked to the annual cycle, and also exhibit obvious irregularity both in amplitude and in lasting time.

本文第四章研制设计了一包含海洋表面边界层和大气辐合反馈过程的热带太平洋海气耦合异常模式，进而利用该模式对ENSO循环进行了较为真实的模拟，通过对模式ENSO循环的演变特征及其形成机制的细致分析，建立了-ENSO循环的非线性分析模式，并提出了ENSO循环形成的一种更为客观的理论，指出：1）和观测事实类似，模式ENSO循环确实涉及了三种主要时间尺度过程即LF、QB和AC，其中LF为3-4年主周期振荡，QB占总方差10～20%；2）ENSO循环的正反馈机制是不稳定海气相互作用过程，且这一不稳定过程的发展在暖态中明显强于冷态；3）ENSO循环的负反馈机制在冷暖态中表现不同，在冷态消亡过程中，这种负反馈过程主要表现为西边界反射产生的时滞效应，但在暖态消亡过程中不存在类似的时滞效应，其负反馈过程主要表现为在海气耦合不稳定充分发展时伴随的赤道两侧冷水上翻过程的加强以及非线性过程的衰减作用抑制了不稳定的发展并最终使得系统回复至冷态；4）ENSO循环的3-4年主周期振荡是一非线性系统的自激振荡现象，其形成是线性系统的本征模即准两年振荡通过非线性机制产生的周期加倍所致，其中&单向性&大气辐合反馈加热过程对其形成至关重要；5）虽然年循环过程对ENSO循环形成没有本质影响，但它可明显影响ENSO循环的具体振幅和位相，使得ENSO对季节循环有明显的&锁相&特征，并且也使得ENSO循环在振幅大小和时间长短方面呈现出明显的不规则性。

The oscillation performance of jet, as oscillation frequency, is the essential data for designing the fluidic device, which is also the key factor that influence the coupling effect of fluidic device and receiving tube. This paper does experiment on the oscillation availability and frequency of feedback jet-oscillation gas wave refrigeration. As a conclusion, the jet oscillates only in a certain range of geometrical sizes and operating conditions. Under the condition of high pressure ratio, the frequency of the jet"s oscillation is only affected by the feedback tube"s length and chamber remarkably. Under the condition of low pressure ratio, the frequency descends with rise of the pressure ratio.

本文将跨音速正反馈射流振荡器与接受管耦合，对耦合后的射流振荡气波制冷机的可振性、振荡频率以及它们的影响因素作了实验研究，得出如下结论：射流只在一定的操作条件和几何结构尺寸范围内才能稳定振荡；射流的振荡频率在较高压比下只受反馈管长和反馈管容腔大小的显著影响，在小压比下随压比的增大而增加；其它结构尺寸和操作条件只影响可振性。

Spatial pattern of the sea surface temperature appears a basin mode consistent with the isobaths in SCS, while the wind field exhibits a weak winter or summer monsoonal characteristic. The MOCM in different season may reflect a positive SST-evaporation-wind feedback which may be stronger in winter than in other seasons.

结果发现；第一模态为最显著模态，模态协方差贡献比在四季均超过80%，空间上SST表现为与南海等深线相一致的海盆模态，风场上主要表现为弱的冬季风或弱的夏季风，各个季节的海－气耦合模态都主要反映了SST-蒸发－风反馈这样1种正反馈的海－气相互作用过程，而且冬季风期间这种相互作用要更强烈些。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐