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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 state-space 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)
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)
Self-localization is a key function in wireless sensor networks (WSNs). Many applications and internal mechanisms require nodes to know their location. Based on two different application environments and from the view of anchor nodes density, this paper proposes two new algorithms for distributed cooperative localization: Centroid-based with Preplaced(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)
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)
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)
PID (proportional integral derivative) control is one of the earlier control strategies [59]. Its early implementation was in pneumatic devices, followed by vacuum and solid state analog electronics, before arriving at today's digital implementation of microprocessors. It has a simple control structure which was understood by plant operators and which they(More)