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It this paper approximation of fractional-order systems into 2nd order integer-order state-space models is presented. The operation is performed it two steps, in first step integer order approximation of fractional order system is done using oustaloup's approximation algorithm and then, the approximated system is realized in a state-space form using MATLAB and dimension of the resulting integer-order...
In this paper an optimized fractional order proportional, integral and derivative (FOPID) controller is designed to control the non-minimum phase (NMP) systems with time delay. The NMP system shows the undershoot behavior because of having zeros in the right half plane and the response becomes sluggish as the time delay increases. For improving the performance of the NMP system an optimized FOPID...
In this paper the PID controller is designed to control the liquid level in the Spherical tank system (STS). The STS is modeled in fractional order and is approximated to an integer order by using oustaloup's approximation algorithm. The higher order integer system is reduced to a 2nd order by using Balanced Truncation (BT) method. The PID controller is designed for this reduced order model and the...
In this paper an integer order and fractional order proportional plus integral plus derivative (IOPID & FOPID) controller is designed to control an automatic voltage regulator (AVR) system. The parameters of the IOPID controller are tuned using Ziegler-Nichols (ZN) method and further optimized by grey wolf optimizer (GWO). The FOPID controller is also designed for the betterment of the synchronous...
Vehicular Internet access via open WiFi access points (APs) has been demonstrated to be a feasible solution to provide opportunistic data service to moving vehicles. Using an in situ deployment, however, such a solution does not provide performance guarantees due to unpredictable intermittent connectivity. On the other hand, a solution that tries to cover every point in an entire road network with...
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