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This paper addresses a constrained robust output regulation problem for a class of output feedback systems with unknown control direction. The problem is firstly transformed into a constrained stabilization problem by introducing the internal model principle. Then a robust adaptive feedback control law for the system is proposed to solve the constrained stabilization problem by incorporating the techniques...
The data communication between network nodes can be realized over more than one transmission path. These paths can be utilized in different ways; either to obtain better throughput or to obtain redundancy of transmitted data. The purpose of this paper is to present an analysis of the innovative two-path data transmission scheme with the focus on data redundancy. The proposed scheme uses a network...
This article proposes a robust controller design of hydro-thermal power system considering of the thermal power plant area connected to the hydro power plant area. The automation generation control of an interconnected hydro-thermal power system with a small Energy Capacitor System (ECS) augmented to both area has been investigated. The controller is used in order to control the frequency robustly...
It is no doubt that fingerprint recognition is the most common biometric modality, which can be used to authenticate the identity of a person. Automatic identification systems based on fingerprint recognition have been extensively deployed in the industrial and forensics area. The performance of these systems relies on the accuracy of the fingerprint comparison algorithm, which is still suffering...
An new network communication system for power electronics controller to transmit the feedback signal from the sensors using FPGA based hardware controller was proposed. Based on RocketI/O network controller, customized Rocket I/O protocol was implemented to achieve high speed feedback communication between two FPGA controller. To compensate the network delay of the feedback signal, communication disturbance...
In this article, we provide a numerical method for the mixed H2/H∞ synthesis minimizing the H2 norm of one transfer function while imposing restriction on H∞ norm of the other transfer function. The mixed H2/H∞ robust controller with degree constraint can be designed by solving the nonlinear equations, where a group-preserving scheme is introduced. Three examples are used to investigate the numerical...
The accuracy of data used to construct calculation models of the network is an important factor that affects the reliability indices of electric power systems (EPS) at their operation. Along with random errors the measurements of EPS state variables contain quite often bad data. The paper addresses the algorithms of bad data detection by the test equation method at decomposition of a state estimation...
The study proposes a new efficient method for a robust position control of DC motor, i.e., the so called non-linear sliding surface method, for class of higher order non-linear uncertain system to improve a transient response. It consist of a non-linear function which is used to tune the control law so as to improve the performance of the higher order system. The proposed scheme increases the damping...
In this paper, a novel Adaptive control technique is proposed to stabilize the linear inverted pendulum at upright position. Adaptive Backstepping is a Lyapunov Based robust control technique in which a feedback control law is designed to control plant and achieved required specification such as robustness and stability of system. Adaptive Backstepping provides a systematic tool to design a controller...
Military and civil aviation are requiring higher performance for the aircrafts in recent years. The morphing techniques can effectively improve aircraft's performance to meet the customer's multi-mission requirement for the aircraft. To get the optimal aerodynamic performance under different flight conditions, the aircraft must change its aerodynamic configuration adaptive to specific condition. In...
In this paper, we investigated an adaptive observer for fault detection and reconstruction. The proposed method is developed for linear systems with disturbance input and partial state availability. The method could be used for disturbance reconstruction, as well. The Lyapunov analysis is utilized to show the convergence of error signals. Design parameters are obtained by solving a feasible algorithm...
The maximum coverage problem is a staple of facility location theory, and has more recently been extended to the covering facility interdiction problem, in which covering facilities are chosen for interdiction so as to minimize the resultant coverage. This paper considers the opposite to the interdiction problem, selecting facilities to maximize coverage after the worst-case interdiction. Solutions...
Studying functional brain activities based on analyzing BOLD signals derived from fMRI data has received significant interest in the neuroimaging field. However, there exists considerable variability of BOLD signals for the corresponding brain region of interest (ROI) across different subjects. To extract more reliable and representative information from BOLD signals, in this paper, we propose a novel...
This paper proposes a new approach of adaptive hybrid registration without fiducials to electromagnetically track a bronchoscope in real time. Bronchoscope tracking seeks to obtain the position and orientation of the bronchoscope tip in a reference coordinate system. An electromagnetic tracker with a sensor attached to the bronchoscope tip is usually used. However, the spatial transformation between...
This paper presents a Bilinear FSP-SPC to control the outlet temperature of a solar collector field. The process have a dead-time caused by multiple factors and requires an advanced control techniques to be controlled. This algorithm combines the numerical robustness typical of subspace-based methods with the robustness and performance of filtered Smith predictor based controllers. It uses a bilinear...
The aim of this paper is to design a double controller scheme for autonomous tuning of set-point tracking response and disturbance rejection response. Thus it improve the three performance attributes of control loop include set-point tracking response, disturbance rejection response and robustness. The proposed scheme provides additional flexibility for reducing the noise due to actuator chattering...
This paper proposes the modeling of uncertainty design of a two degree of freedom (2-DOF) nonlinear helicopter model with nine uncertain parameters. This approach is developed based on a robust μ-synthesis control tool for a laboratory helicopter model known as twin rotor multi-input multi-output system (TRMS). The goal of control is robust stabilization of position of TRMS by considering nonlinearity...
We investigate discriminative features that are able to improve classification accuracy on visually similar classes. To this end, we build a deep feature learning network, which learns features with discriminative constraint in each single layer module, and learns multiple levels of features for hierarchical image representation. Specifically, the network encodes the discriminative information by...
The PID controller tuning method based on desired dynamic equation is analyzed on its close-loop control performance and stability. The stable region calculation method for DDE-based PID controller is proposed based on Nyquist stability criterion and open-loop frequency response. Then the influence of tunable parameter k on set point tracking error is analyzed when the order of controller does not...
In this paper, robust stabilization of liquid level for a spherical tank is considered. This system is a First Order plus Time Delay (FOPTD) system, and the goal is to design a fractional order proportional integral (FOPI) controller. FOPI controller has three free parameters to achieve the desired performance. For this purpose, a stable region is obtained based on these free parameters which satisfy...
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