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Wandering robot avoiding obstacles while wandering and reaching a goal

bp matlab版 bp 三层神经网络，用于函数逼近。(bp matlab version bp three-layered neural networks for function approximation.)

The modeling and attitude stabilization control problems of a four-rotor vertical takeoff and landing unmanned air vehicle (UAV) known as the quadrotor are investigated.The quadrotor’s attitude is represented by the unit quaternion rather than Euler angles to avoid singularity problem. Taking dynamical behavior of motors into consideration and ignoring aerodynamic effect, a nonlinear controller is developed to stabilize the attitude.The control design is accomplished by using backstepping control technique.The proposed control law is based on the compensation for the Coriolis and gyroscope torques. Applying Lyapunov stability analysis proves that the closed-loop attitude system is asymptotic stable. Moreover, the controller can guarantee that all the states of the system are uniformly ultimately bounded in the presence of external disturbance torque.The effectiveness of the proposed control approach is analytically authenticated and also validated via simulation study.

说明：  双稳态随机共振的一个仿真，随机共振的弱信号检测，运用朗格万方程进行MATLAB的仿真。(Simulation of a bistable stochastic resonance , stochastic resonance in weak signal detection , the use of Lange Wan equation for the MATLAB simulation)

fingerprint image processing such as sungularity and core point detection

说明：  node deployment by firefly algorithm

稀疏性学习的工具包，包含说明文件和工具m文件(Sparse learning toolkit, including documentation and tools m file)

CFD simulation of cavity

这是matlab的一个遗传算法事例，详细解除了遗传算法的各个步骤，对初学者有用(This is a genetic algorithm matlab examples lifted in detail the various steps of the genetic algorithm, useful for beginners)

说明：  粒子群算法（PSO）应用于神经网络优化，采样matlab编程(Particle swarm optimization (PSO) applied to neural network optimization, sampling matlab programming)