反馈控制系统

In order to effectively design this accelerometer, it is necessary to study how the system characteristics are influenced by parameters of proof mass, servo-controlled feedback electrostatic force and air damping.

研究与检测质量块、伺服控制的静电反馈力和空气阻尼相关的各个参数对系统指标的影响将有助于此类加速度计的设计。

The system adopted active tracking,namely calculate the input angle of the tracking device in advance,the angle is correspondent to the sun position some moment.Photoelectric sensors react the sunlight that putting on different position of the platform, feedback electrical signal.Then single-chip applys the subprogram and sends out pulse to step motors according to the signals,can control the rotate angle and direction of the step motor. The mechanism has realized the automatic track to the sun, so that the trackers top flat board can be always vertical to the sunlight and arrive the furthest receiving energy.

系统采用主动式跟踪，即预先计算好对应于某时刻太阳位置的跟踪机构的输入角度，通过跟踪器上平台不同位置上摆放的光电传感器感受该太阳位置的光照，反馈回电信号，单片机根据该信号调用子程序发出脉冲对步进电动机的转动角度和方向进行控制，实现了机构对太阳的自动跟踪，使跟踪装置的上平台始终处于垂直于光照方向，达到了能量最大限度的接收。

The problem of guaranteed cost control via memoryless state feedback is addressed for a class of interval singular systems with delayed state.

针对一类具有状态时滞的时滞区间广义系统，基于状态反馈研究了保性能控制问题。

In this system, we introduces cluster architecture to provide global and scalable streaming caching proxy service mechanism; We implement streaming media transfer protocol on caching proxy end; We implement layered caching mechanism (global disk caching and memory caching) using dynamic sharing running memory buffer algorithm to support more stable and real-time parallel streams; We implement client request aggregation by means of streaming session sharing to reduce disk I/O and serve more user; We propose single streaming image to support the unify of pre-fetching streaming and caching streaming, which guarantees the proxy streaming of transparency for client; We design and implement streaming pre-fetching mechanism based on packet feedback information to reduce the number of "rebuffering" on client end; We bring forward streaming caching admission control policy fit for streaming caching proxy server to guarantee the QoS of streaming service.

该系统引入集群架构以提供全局的、可扩展的缓存代理服务机制；实现了缓存代理端的流媒体传输协议；采用动态共享运行缓冲区算法实现了分层缓存机制(全局磁盘缓存和内存缓存)以支持更多稳定、实时的并发流；利用流会话共享机制实现了客户请求聚集，从而减少磁盘I/O同时能服务更多的客户；提出了单一流映像，以支持预取流和缓存流的统一，从而保证代理端服务流对客户的完全透明；设计并实现了基于包反馈信息的流数据预取机制，从而减少了客户端的"rebuffering"次数；提出了适合于缓存代理服务器的流缓存准入控制策略，保证了流服务的QoS。

Another important contribution of this thesis is the proposal of two nonlinear learning algorithms based on Fourier series.

方法二是将Fourier变换用于实时控制的信号滤波，本文提出了一种实时映象移位数字Fourier变换的方法，并将其用于实时加速度负反馈的加速度信号滤波，以增强系统抗干扰和抵抗模型不确定性的能力。

By employing the control Lyapunov function,a class of discrete-time nonlinear systems with multiple inputs was researched.

以控制Lyapunov函数为基础，研究了一类具有多个输入的非线性时间离散系统的反馈镇定问题。

The cascade of FIR digital filter and PPSV is used to control chaos and hyperchaos in nonlinear continuous system.

利用数字FIR滤波器和正比于系统变量的脉冲反馈法的级联控制非线性连续系统中的混沌和超混沌。

And the implementation approach by hardware and software is also expounded. By integrating a lot of knowledge on sensing technique, signal analysis, network communications, control technique and expert system , this system can feed back the on - line state of blower fan on real time so as to deal with faults immediately.

该系统集成了传感技术、信号分析技术、网络通信技术、控制技术和专家系统，实现了风机实时振动信号的自动采集，并通过计算机进行振动信号的处理和故障分析，能够及时反馈风机的在线状态，从而进行及时维修。

Based on the characteristics and the demands of synchronization, a single nero forecast controller was presented, which was designed to eliminate synchronization error of upset force in flash butt welding. A press feedback loop was designed to solve the problem that it is uneasy to assemble force sensor in flash butt welding.

针对于大截面钢坯闪光焊顶锻阶段的特点和同步要求，提出了一种基于单神经元的同步误差预测控制方案，用于消除闪光焊顶锻过程中的系统之间顶锻力的同步误差；方案中采用液压系统压力反馈的方法解决了闪光焊中不方便安装里传感器的问题。

When a malfunction of the satellite occurs, the teleoperator uses a space mouse and a data-glove with force feedback to control the arm/hand system fixed on the satellite body to remove the malfunction to implement the satellite self-serving.

远端由安装在卫星本体上的一个四自由度机器人和灵巧手的臂／手系统组成，当卫星出现故障时，遥操作者通过空间鼠标和力反馈数据手套分别控制远端的臂／手系统排除卫星故障，实现卫星的自我维护。

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。