摘要：该文提出一种integral Imaging和模拟退火相结合的深度测量方法。针对传统立体视深度测量的复杂性,采用全真三维显示技术integral Imaging成像技术记录空间三维信息。利用带约束的特征匹配算法并综合多种信息分析integral imaging视图对之间的视差。将寻找匹配的问题设计为全局能量函数模型,并用模拟退火算法使该能量函数最小化,从而实现所有视图对中所有特征点的匹配。最后结合integral Imaging深度估算公式获得空间深度信息。仿真结果表明该方法的有效性。

摘要：This paper proposes a systematic method to design general integral control with the generic integrator and integral control action. No longer resorting to an ordinary control along with a known Lyapunov function, but synthesizing singular perturbation technique, mean value theorem, stability theorem of interval matrix and Lyapunov method, a universal theorem to ensure regionally as well as semi-globally asymptotic stability is established in terms of some bounded information. Its highlight point is that the error of integrator output can be used to stabilize the system, just like the system state, such that it does not need to take an extra and special effort to deal with the integral dynamic. Theoretical analysis and simulation results demonstrated that: general integral controller, which is tuned by this design method, has super strong robustness and can deal with nonlinearity and uncertainties of dynamics more forcefully.

摘要：This paper proposes two kinds of nonlinear general integral controllers, that is, one is generic and another is practical, for a class of uncertain nonlinear system. By extending equal ratio gain technique to a canonical interval system matrix and using Lyapunov method, theorems to ensure regionally as well as semi-globally asymptotic stability are established in terms of some bounded information. Moreover, for the practical nonlinear integral controller, a real time method to evaluate the equal ratio coefficient is proposed such that its value can be chosen moderately. Theoretical analysis and simulation results demonstrated that not only nonlinear general integral control can effectively deal with the uncertain nonlinear system but also equal ratio gain technique is a powerful and practical tool to solve the control design problem of dynamics with the nonlinear and uncertain actions.

摘要：Based on the feedback linearization technique, we present a systematic design method for the General integral Control and a new integral control strategy along with a class of fire-new integrator. By using the linear system theory and Lyapunov method along with LaSalle’s invariance principle, the conditions on the control gains to ensure regionally as well as semi-globally asymptotic stability are provided. Theoretical analysis and simulation results demonstrated that: by using this design method, General integral Control can deal with nonlinearity and uncertainties of dynamics more effectively;the optimum response can be achieved in the whole control domain, even under uncertain payload and varying-time disturbances. This means that General integral Control has strong robustness, fast convergence, good flexibility, and then makes the engineers design a high performance controller more easily.

摘要：论文致力于平面正交各向异性弹性问题的规则化边界元法研究,提出了新的规则化边界元法的理论和方法.对问题的基本解的特性进行了研究,确立基本解的积分恒等式,提出一种基本解的分解技术,在此基础上,结合转化域积分方程为边界积分方程的极限定理,建立了新颖的规则化边界积分方程.和现有方法比,论文不必将问题变换为各向同性的去处理,从而不含反演运算,也有别于Galerkin方法,无需计算重积分,因此所提方法不仅效率高,而且程序设计简单.特别是,所建方程可计算任何边界位移梯度,进而可计算任意边界应力,而不仅限于面力.数值实施时,采用二次单元和椭圆弧精确单元来描述边界几何,使用不连续插值逼近边界函数.数值算例表明,论文算法稳定、效率高,所取得的边界量数值结果与精确解相当接近.

摘要：汽车悬架控制系统是一个由较多非线性因素共同作用的复杂系统,针对传统PID控制效果不理想的问题,通过数值拟合的方式引入弹簧与阻尼等非线性影响因素,建立1/4汽车悬架非线性动力学模型,借鉴免疫反馈原理,结合积分控制的规律,提出一种模糊免疫PID(proportion integral derivative)控制方法,并利用免疫进化算法进行参数优化设计。仿真结果表明,该方法在汽车非线性悬架控制系统中可行且有效,其控制器性能也优于常规的PID控制器,具有更好的响应特性,同时也提高了汽车的操作稳定性和乘坐舒适性。

摘要：实际控制器的输出信号是有界信号,即控制器输出饱和问题.针对控制器输出饱和问题,本文提出了低阶被控过程含延迟的一种饱和最优PID控制器设计方法.将控制误差及1阶、2阶、3阶微分项,及它们的混合项作为优化性能指标,建立了含有状态约束、稳定性及代数约束的非线性最优控制问题.应用共同李亚普诺夫函数定理与李亚普诺夫定理,约束最优控制问题被转化为非线性约束最优化问题,通过求解相应的非线性约束最优化问题,可获得饱和最优PID控制器参数.仿真结果表明了设计方法的可行性和有效性.

摘要：根据大功率、低噪声半导体泵浦光纤激光器对于激光电源的要求,通过LD工作原理和输出特性分析,设计一种以ADuc842高速单片机为主控芯片的LD驱动控制电路。设计采用自动电流控制(ACC)和自动温度控制(ATC)的方式,实现LD的恒流源驱动和恒温控制。设计还引用了双限流电路、浪涌吸收电路及慢启动电路等一系列保护电路,提高了LD的抗冲击能力和工作稳定性。实验结果表明,电流输出稳定度优于0.5%,温度稳定度达到±0.1℃。

摘要：几个典型系统介绍 1、Philips的OM5730 OM5730是Philips公司在STB5660基础上改进的第二代STB方案。信源部分由SAA7219和SAA7215两个芯片组成,SAA7219含有PR3930芯核,工作频率81MHz,除解复用功能外,还包括传输流PID处理、IEEE1284并行口、IEE1394驱动、2个RS-232串口、I^2C总线。