attachments_2009_11_04

Computational Building Physics and Systems

粒子群优化算法PSO的经典matlab程序，改进了算法中的收敛因子，算法收敛速度加快。(Particle swarm optimization PSO classic matlab program to improve the algorithm convergence factor, the algorithm converges faster.)

添加噪声处理，解耦，恢复原信号，代码里有很完整的注释和解释。( Add noise processing, Decoupling, restore the original signal, )

说明：  用vb写的遗传算法程序。是一些通用代码，与具体问题对应的代码空出来，用的时候填进去。(used to write the genetic algorithm. Some common code, with the specific issues the corresponding code space, and the time spent filling into account.)

说明：  Jacobi迭代算法和Gauss-Seidel迭代算法的具体matlab实现(Jacobi iterative algorithm and Gauss-Seidel iteration algorithm matlab achieve)

Simply-supported or Pinned-pinned beam evaluations

利用Matlab软件编程实现DDS（直接数字频率合成技术）。设时钟的频率为固定值f_C，在CLK的作用下，如果按照0000,0001,0010，…，1111的地址顺序读出ROM中的数据，即表1中的幅值编码，其正弦信号频率为f_01；如果每隔一个地址读一次数据（即按0000,0001,0100，…，1110顺序），其输出信号频率为f_02，且f_02将比f_01提高一倍，即f_02=2f_01；其余类推。这样，就可以实现直接数字频率合成器的输出频率的调节。(Matlab software programming DDS (direct digital frequency synthesis). Clock frequency set to a fixed value f_C, under the effect of CLK, according to 0000,, ..., 1111 of the sequence of addresses in the ROM reads the data, i.e., the amplitude of the encoding in Table 1, the frequency of the sinusoidal signal f_01 if every time a read address data (ie 0000,0001,0100, ..., the order of 1110), the output signal frequency is f_02, and f_02 f_01 than doubled, i.e. f_02 = 2f_01 rest on. This allows direct digital frequency synthesizer output frequency regulation.)

最优化方法 最速下降法程序 MATLAB程序(MATLAB program optimization method of steepest descent method)

多径下多普勒仿真 内有详细说明，有仿真程序图(multipath and doppler)

在MATLAB环境下的基于分水岭的分割算法，对初学者很有帮助。(Watershed-based segmentation algorithm, useful for beginners in the MATLAB environment.)