phd

摘要 随着火电机组向大容量、高参数和高效率方向发展，对机组热工自动控制系统控制品质的要求也随之提高。在热工过程中，大多数热工对象具有较大的惯性和迟延，且是非线性和慢时变的，部分对象还是多变量的，因而具有很大的不确定性和强耦合性。这就难以建立精确的数学模型，使采用固定参数的PID控制器不能与生产上越来越高的控制要求相适应。 本文主要是研究动态矩阵控制算法在主汽温控制方面的应用。首先，分析了当前火电厂主汽温的控制方式和常规的控制方法，以及影响主汽温变化的各种扰动因素；然后，介绍了动态矩阵控制算法的原理，并基于此原理设计了DMC主汽温控制系统；并且与传统的串级PID控制系统进行了比较，仿真结果表明动态矩阵控制算法的响应速度快，且没有超调，鲁棒性好，控制品质明显优于常规PID控制。 关键词：主汽温；动态矩阵控制；DMC；matlab仿真 (Abstract Developing with the tendency to large capacity, high parameters and high efficiency of fossil-fired unit, the control trait request for thermodynamic automatic control systems is heightened .In thermodynamic process, most thermodynamic objects have large inertia and delay, and are nonlinear and time-variable furthermore, some of them are multi-variable, and also has large uncertainty and strong coupling. This makes it difficult to construct accurate mathematic models, and makes PID controllers with fixed parameters hardly adapted to higher and higher control request in production This article is mainly the research of the application of dynamic matrix control in the main temperature control system. First, it analyzed the conventional control method in the current thermoelectric power station steam system, and the affects of every kind of perturbation factor in the main temperature control system. Then it introduced the principle of dynamic matrix control algorithm, and desi)

A Fast Algorithm for Total Variation based Deconvolution

说明：  该工具箱中包含了多种降维算法。其中有传统的PCA和Local PCA算法，也有典型的流形学习算法，如Isomap、LLE、HLLE、Laplacian Eigenmaps 和 Local Tangent Space 。(The toolbox contains a variety of dimensionality reduction algorithms. In which the traditional PCA and Local PCA algorithms, there are the typical manifold learning algorithms such as Isomap, LLE, HLLE, Laplacian Eigenmaps and Local Tangent Space.)

线性调频中的脉压技术研究及常用方法，是很好的脉压资料(Chirp in research techniques and methods of pulse pressure, pulse pressure is a good information)

Block Compressed Sensing of Images Using Directional Transforms

用matlab实现了简单的图像处理，频率滤波(Using matlab to achieve a simple image processing, frequency filtering)

本程序采用自相关法求混沌时间序列重构的时间延迟。(This procedure using the autocorrelation method for chaotic time series reconstruction time delay.)

极化SAR定标处理的matlab程序，采用最新的Ainsworth算法(Polarization SAR processing matlab calibration procedure, using the latest algorithms Ainsworth)

Its a documentation based on different field of image processing,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

卡尔曼滤波器对沿直线运动的机器人的运动轨迹进行估计。画出轨迹估计曲线和实际运动曲线(Kalman filter to estimate the trajectory of the robot along the linear motion. Draw the trajectory estimated curve and the actual motion curve)