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Many real world systems, including smart mechatronics systems, can be better characterized by dynamic systems of non-integer order. Using non-integer order or fractional order calculus, fractional order systems can be modeled more authentically. Due to the nature of the infinite dimensional model, proper approximations to fractional order differentiator(More)
We consider uncertain fractional-order linear time invariant (FO-LTI) systems with interval coefficients. Our focus is on the robust controllability issue for interval FO-LTI systems in statespace form. We re-visited the controllability problem for the case when there is no interval uncertainty. It turns out that the stability check for FO-LTI systems(More)
Inverted pendulum is a typical multivariable, nonlinear, strong-coupling, instable system. The basic aim of our work was to balance a real pendulum in the position in center of course. For this purpose we used fuzzy logic controller. The fuzzy logic controller designed in the Matlab-Simulink environment. In this paper, the inverted pendulum mathematical(More)
This brief proposes a design method for a digital fractional order Savitzky-Golay differentiator (DFOSGD), which generalizes the Savitzky-Golay filter from the integer order to the fractional order for estimating the fractional order derivative of the contaminated signal. The proposed method calculates the moving window’s weights using the polynomial(More)
In this paper, a new tuning method of variable-order fractional fuzzy PID controller (VOFFLC) is proposed for a class of fractional-order and integer-order control plants. Fuzzy logic control (FLC) could easily deal with parameter variations of control system, but the fractional-order parameters are unable to change through this way and it has confined the(More)
With the advancement of multimedia and real-time networks, a vast number of digital images are now stored and transmitted over public networks. A lot of researches of chaos-based image encryption technologies have been done. However, the performance of conventional encryption algorithm is not satisfying when used to color image. In this paper, we propose an(More)
The recognition and location of the internal corners of a planar checkerboard calibration pattern image is very important to camera calibration. An effective approach is proposed to automatically recognize and locate the internal corners of the planar checkerboard calibration pattern image based on the characteristics of local intensity and the grid line(More)
An approach of image mosaic based on binary image region matching is presented and applied in remote sensing serial image processing. Adopted the nearest-neighbour interpolation, the original images are rectified on the basis of the values of external orientation elements of the camera installed on the unmanned aerial vehicle (UAV). Image matching includes(More)
A mosaic method was put forward based on image wavelet transform and low-frequency area feature matching, which realized fast dynamic stitching of unmanned aerial vehicle's (UAV) sequence remote sensing images. This method made use of wavelet transform to obtain low-frequency image, searched and picked up character template image in this area, calculated(More)