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说明：  DC MOTOR SPEED CONTROL 3

matlab版SIFT算法演示程序，简洁易懂易用，实际算法部分用C来实现(SIFT algorithm demo program of matlab version)

高斯函數方程式案例，主要是以matlab軟件來運算標準題型。(Gaussian equation case, mainly matlab software to compute the standard questions.)

将一副彩色图像转为灰度图像，截取部分，并找到质心位置(Centroid calculation of gray image)

a smaple matlab program

matlab的入门书籍，比较浅显，适合于初学者阅读(matlab introductory books, for less, suitable for beginners to read)

稳定时期为单位汽车完善的需求为单位DDFCWECDWCSCSC测定出稳定舞动长裙生产线(In cognitive radio networks, power control is considered as an important issue to improve the performance of dynamic spectrum sharing. In this paper, in order to maximize the efficiency of the system, the secondary users and primary user behaviors will be considered. )

it is the demo of face detection and recognition

去斜率（strech）参考信号与回波信号混频后得到中频输出信号S(t)=Aexp(j*2*pi*f0*t+phase) 其中f0与回波延时的关系为： f0=k*delay_t K为线性调频斜率，delay_t为回波延时 将s(t)采样，FFT变换即可得到目标距离与频谱的关系。 Strech 信号测距 输入混频后的中频信号（图一），经采样及FFT变换得到频谱（图二） 再根据频谱与距离的关系式R=Tcf/2B显示出距离(图三) (Go slope (strech) obtained after the reference signal and the echo signal mixer IF output signal S (t) = Aexp (j* 2* pi* f0* t+phase) f0 and echo delay relationship: f0 = k* delay_t K chirp slope, delay_t the echo delay sampling s (t), the FFT transform to the target distance spectrum of relations. Strech signal ranging input mixer IF signal (Figure 1), sampling and FFT transform spectrum (Figure 2) according the the spectrum distance relationship R = Tcf/2B shows the distance (Figure 3))

对于飞控系统的设计非常重要，是半实物仿真的必备工具，从事无人直升机的必须品(For the flight control system design is very important and is an essential tool for loop simulation, in the necessities of unmanned helicopter)