The main objective of this paper is to design a fractional-order PID speed controller for vector-controlled induction motors, where possible parameter variations and load disturbances are considered. The required parameters of the fractional-order PID controller can be obtained by utilizing the Matlab optimization toolbox, in which phase margin, gain-crossover frequency, high-frequency noise re...

An unsolved ancient problem in position control of robot manipulators is to find a stability analysis that proves global asymptotic stability of the classical PID control in closed loop with robot manipulators. The practical evidence suggests that in fact the classical PID in industrial robots is a global regulator. The main goal of the present paper is theoreticall...

The main objectives of vehicle motion control on an automated highway system are stable and safe automatic longitudinal and/or lateral path following in a platoon of vehicles. Various controllers can be used to satisfy the same objectives, but they may require different variables to be sensed or different conditions to be met. Supervision can select a controller and switch to a different contro...

Application of fuzzy PD controller based on self learning algorithm for SVC device has been investigated in this paper. This approach used sensitivity model for learning Self Learning Fuzzy Logic parameters. This has been improved by adding up an integral term whose gain coefficient is also synthesized by learning that is actuated after completion of the main learning algorithm. The paper consi...

In this paper we design a new reconfigurable controller for active fault-tolerant control systems with direct applicability to aircraft’s flight control. The reconfigurable controller is based on a new algorithm for the calculation of the controller gain matrix without using information from a full-order or reduced order observer. The main advantages of the reconfigurable controller, when no fa...

We propose a feedback controller to efficiently control web requests with real-time characteristics, especially on overloaded networks. The controller is designed based on a feedback closed loop that prevents overload of web server and enforces target CPU utilization via controlling the amount of input web requests. The main contribution of this letter is the use of feedback control theory to d...

An enhanced nonlinear PID (EN-PID) controller that exhibits the improved performance than the conventional linear fixed-gain PID controller is proposed in this paper, by incorporating a sector-bounded nonlinear gain in cascade with a conventional PID control architecture. To achieve the high robustness against noise, two nonlinear tracking differentiators are used to select high-quality differe...

Bronchomalacia in adults is rare. A case is reported here of a 65-year-old man with severe cough and mucostasis, caused by a benign bronchomalacia of the ventral wall of the left main bronchus. This was treated successfully with the insertion of a silicone Dumon stent as an alternative to surgical bronchoplasty.

This paper presents a controller for background subtraction algorithms to detect mobile objects in videos. The controller has two main tasks. The first task is to guide the background subtraction algorithm to update its background representation. To realize this task, the controller has to solve two important problems: removing ghosts (background regions misclassified as object of interest) and...

The main aim of this paper is to test if FPGAs are able to achieve better position tracking performance than software-based soft real-time platforms. For comparison purposes, the same controller design was implemented in these architectures. A Multi-state Fuzzy Logic controller (FLC) was implemented both in a Xilinx(®) Virtex-II FPGA (XC2v1000) and in a soft real-time platform NI CompactRIO(®)-...