Showing 1-25 of 1,716 resultsfor "Index Terms":High-gain Observer
"Index Terms":High-gain Observer
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Increasing accuracy in non-linear sliding-mode observers without decreasing sampling time using frequency domain analysis
This paper presents a method to improve estimation accuracy of sliding-mode observers (SMOs) using frequency domain analysis. First, the high-gain property of the SMO is employed in order to obtain fast convergence of the estimated states. Then, when the system is in the switching condition, signals are decomposed into two parts in the frequency domain: (1) the slow-mode part, which consists of th...Show More
A comparative study of linear observers applied to a DC servo motor
Proceedings of the 2010 International Conference on Modelling, Identification and Control
Year: 2010 | Conference Paper |
Cited by: Papers (2)
This paper presents a comparative study of six different linear observers. The studied observers are Luenberger Observer, Kalman (Filter) Observer, Unknown Input Observer, Augmented Robust Observer, High Gain Observer and Sensitive High Gain Observer. A Matlab simulation of a DC motor model is undertaken to verify the performance of the designed observers. The Comparisons were carried out differen...Show More
High Gain Observer Design for DoS Attack Detection in CACC Platoon
Xiaofei Zhang;Haiping Du;Jumei Wei;Zhijuan Jia;Suimin Jia;Ge Ma
2020 International Seminar on Intelligent Technology and Its Applications (ISITIA)
Year: 2020 | Conference Paper |
Cited by: Papers (3)
In this paper, a high gain observer is designed to detect the DoS (Denial of Service) attack on autonomous connected vehicles. The Cooperative Adaptive Cruise Control (CACC) platoon model is chosen in this study due to a smaller headway between vehicles, where the data from sensors and transmitted through the wireless internet are easy to be attacked, especially for the wireless channel. To overco...Show More
High-Gain Observer Design for Nonlinear Systems with Delayed Output Measurements using Time-Varying Gains
2022 IEEE 61st Conference on Decision and Control (CDC)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
This paper proposes a high-gain observer design for nonlinear systems with delayed output measurements using time-varying gains. The proposed observer is endowed with an exponential stability guarantee and relies on the generalization of the Halanay-type inequalities. We establish that the estimated state and the adapted gain are exponentially bounded and prevent the oscillatory response of the es...Show More
Filtered High-Gain Observer Design For a Class of Nonlinear Systems subject to Delayed Measurements: Application to a Quadrotor UAV
Quang Truc Dam;Rihab El Houda Thabet;Sofiane Ahmed Ali;François Guérin
In this paper, a novel structure of a Filtered high-gain Observer is proposed for a class of nonlinear systems subject to delayed measurements, bounded disturbances and noise measurements effects. The structure of the proposed observer is able to obtain a larger bound of the Maximum Allowable Value of Time Delay (MAVTD) that ensures the convergence of the observer in comparison with the one obtain...Show More
The problems of observation and control of nonlinear systems have received a particular attention throughout the last four decades. Considerable efforts were dedicated to the analysis of the structural properties to understand better the concepts of controllability and of observability of nonlinear systems. Several control and observer design methods were developed thanks to the available techniqu...Show More
High-Gain Observer Design for a Class of Hyperbolic Systems of Balance Laws
2018 IEEE Conference on Decision and Control (CDC)
Year: 2018 | Conference Paper |
Cited by: Papers (9)
Considering a class of hyperbolic systems of balance laws with distributed measurements, and possibly distributed effects of known inputs, a structure suitable for uniform observability is first emphasized. Sufficient conditions for an explicit high-gain observer design are then derived for special cases of such systems. The stability of the related observer estimation error is fully established b...Show More
This note deals with observer design for nonlinear systems. The main contribution of this work consists in providing a new high-gain observer design method with lower gain compared to the standard high-gain observer. This new observer, called HG/LMI observer is obtained by combining the standard high-gain methodology with the LPVLMI-based technique. We will show through analytical developments how...Show More
An Improved Equivalent-Input-Disturbance Approach for Disturbance-Rejection Using High-Gain Observer
An improved equivalent-input-disturbance (EID) approach is presented in this paper to promote the transient performance of disturbance rejection in the control system. A high-gain observer (GO) is introduced to the conventional EID method to accelerate the convergence of state error. This makes the estimated disturbance tracking the exogenous disturbance more quickly and more precisely. First, the...Show More
Robust State Estimation of a Quadrotor Based on High-Gain and Sliding-Mode Observers
2018 15th International Multi-Conference on Systems, Signals & Devices (SSD)
Year: 2018 | Conference Paper |
Cited by: Papers (1)
In this paper, we investigate the problem of joint states and external aerodynamic disturbances estimation for a quadrotor model. The dynamics of longitudinal and angular velocities are corrupted by unknown time varying disturbances whereas only positions and angles are available for measurements. To overcome the problem of observer matching condition, we generate auxiliary outputs to relax the st...Show More
A High Gain Observer Design For Wireless Power Transfer Charger For BEV
Abdellah Lassioui;Hassan El Fadil;Aziz Rachid;Tasnime Bouanou;Zakariae El Idrissi;Fouad Giri
2020 International Conference on Electrical and Information Technologies (ICEIT)
Year: 2020 | Conference Paper |
Cited by: Papers (6)
This paper addresses the design of a high gain observer for a Wireless Power Transfer (WPT) charger for Battery Electric Vehicle (BEV). Firstly, an overview of the studied system is given. Secondly, a classical circuit of a WPT charger and its equivalent mathematical model is presented. Thirdly, the high gain observer is designed for the studied system. It should be noted that the designed observe...Show More
This paper presents a simple adaptive controller which universally achieves so-called X-tracking for linear systems where only little structural information about the system to be controlled is needed. The paper extends previous results to the case of systems with higher relative degree. Stability and convergence of the adaptation is proven for tracking arbitrary but sufficiently smooth reference ...Show More
In this work, an event-triggered high gain observer (ET-HGO) design is considered for a continuous-time nonlinear system combined with disturbance and uncertainty. In the event-trigger scheme, the performance of the ET-HGO depends on the triggering condition directly. Hence, in this work, for the high-gain observer considered, an event-triggered transmission strategy, which does not relies on the ...Show More
Switched High-Gain State Observer-Based Adaptive Integral Terminal Sliding Mode Control of a Quadrotor UAV with Disturbances
2023 Second IEEE International Conference on Measurement, Instrumentation, Control and Automation (ICMICA)
Year: 2024 | Conference Paper |
This paper presents a high-gain state observer with switching properties to achieve the desired convergence within the predefined time set by the designer for the quadrotor unmanned aerial vehicles (UAVs). The primary focus of the proposed work is the convergence of the estimated state with the actual state within the prespecified time, which remains unaffected by changing the initial state parame...Show More
Non-dominated sorting genetic algorithm for the high gain observer optimization. Application to chaos synchronization
2017 18th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)
Year: 2017 | Conference Paper |
Cited by: Papers (5)
The problem posed by this paper is the state synchronization of nonlinear perturbed chaotic systems by employing an optimal high gain observer, which optimization is derived by the non-dominated sorting genetic algorithm (NSGA-II). Such a procedure is proved to be an efficient multiobjective search technique in various applications. Thus, a new quadratic optimization criterion is proposed to calcu...Show More
Backstepping design is a powerful method for stabilization and tracking of strict feedback nonlinear systems which find applications in practical fields like robotics, aerospace, process control, etc. However the presence of uncertainties in system dynamics complicates the control design procedure. In recent past, high gain disturbance observer based backstepping design has received considerable a...Show More
NSGA-II based high gain observer improved optimization method
2022 5th International Conference on Advanced Systems and Emergent Technologies (IC_ASET)
Year: 2022 | Conference Paper |
This paper purpose is to optimize a high gain state observer for the estimation nonlinear chaotic systems.The upgrading method, based on the use of a non dominated sorting genetic algorithm (NSGA-II), relies on a quadratic optimization fitness function is presented to generate the most suitable value of the observer influential parameter θ that define the observation gain. NSGA-II algorithm is con...Show More
Feedback Linearization using High Gain Observer for Nonlinear Electromechanical Actuator
Abid Raza;Fahad Mumtaz Malik;Naveed Mazhar;Rameez Khan;Hameed Ullah
2019 22nd International Multitopic Conference (INMIC)
Year: 2019 | Conference Paper |
Cited by: Papers (8)
Naval applications need refined regulation, to meet modern era standards, which eventually leads to the requirement of more accurate mathematical modeling of all subsystems. All naval autonomous systems are equipped with electromechanical actuators, which are often controlled for linear operating range and nonlinearities which may lead to chaotic behavior, are ignored. Additionally, the necessary ...Show More
A nonlinear high-gain observer for n-link robot manipulator which has measurement noise in a feedback control framework
2017 17th International Conference on Control, Automation and Systems (ICCAS)
Year: 2017 | Conference Paper |
Cited by: Papers (3)
This paper presents the design of an output feedback controller (OFBC) for an n-link robot manipulator. This is achieved by using non-linear high gain observer. As measurement noise poses a great difficulty while estimating the system states, as the gain of the observer increases the measurement noise significantly amplified, causing higher steady state error. A non-linear high gain observer is pr...Show More
Full Order High Gain Observer Design for Image-Guided Robotic Flexible Needle Steering
2019 27th Iranian Conference on Electrical Engineering (ICEE)
Year: 2019 | Conference Paper |
Cited by: Papers (7)
This paper represents a full state observer for the imaged guided robotic flexible needle. In many minimally invasive surgeries flexible needles are utilized, but because of the low accuracy of the imaging systems and needle tip size, the orientation of the needle cannot be measured directly. On the other hand, most of the proposed controllers need needle orientation in feedback law and thus, they...Show More
Robust Backstepping Sensorless Speed Control of PMSM Using Cascaded Sliding Mode and High Gain Observers
2019 International Symposium on Recent Advances in Electrical Engineering (RAEE)
Year: 2019 | Conference Paper |
Cited by: Papers (4)
In this work we implement a Sensorless speed control for three phase Permanent Magnet Synchronous Motor (PMSM) using the Backstepping Control. Only stator currents and voltages are used for feedback to design a non linear control algorithm which tracks the speed of PMSM with parametric uncertainties and under varying load. A continuous sliding mode observer (SMO) based on sigmoid function is used ...Show More
Output regulation of feedback linearizable system (single link robot manipulator): A cascaded high gain observer approach
2017 7th IEEE International Conference on Control System, Computing and Engineering (ICCSCE)
Year: 2017 | Conference Paper |
Cited by: Papers (3)
Tracking and manipulating robots have become increasingly common in recent times in robotics. Cascading high gain observer technique is a useful technique for tracking and manipulating. In cascade high gain observers, saturation is introduced in between observers with lower dimension. The Cascade high gain observer is found to be an excellent tool against the high dimension of the system. If the s...Show More
Adaptive state estimation for a class of nonlinear systems: a high gain approach
2019 19th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)
Year: 2019 | Conference Paper |
Cited by: Papers (2)
In this paper, we propose a new adaptive estimation approach for a class of uncertain nonlinear systems such that the classical restrictive observer matching condition is not verified. That is, it is assumed that the relative degree of the outputs w.r.t the uncertain parameters vector is greater or equal than two. To solve this problem, we generate auxiliary outputs and we construct a high gain ob...Show More
Synthesis of Observers for the Three Tank System
2023 IEEE International Conference on Artificial Intelligence & Green Energy (ICAIGE)
Year: 2023 | Conference Paper |
In order to minimize the use of physical sensors, we opt to conceive soft sensors, called state observers that allow us to define some system's parameters. For instance, High gain observers provide powerful tools for the state estimation of nonlinear systems. Significantly, we tried to use the classical high gain observer and the fuzzy high gain observer based fuzzy supervisor to estimate the liqu...Show More
State Estimation of Rotary Inverted Pendulum: A Comparative Study of Observers Performance
Amjad J. Humaidi;Abdullah A. Mohammed;Akram Hashim Hameed;Ibrahim K. Ibrahim;Ahmad Taher Azar;Ayad Q. Al-Dujaili
2020 IEEE Congreso Bienal de Argentina (ARGENCON)
Year: 2020 | Conference Paper |
Cited by: Papers (1)
This paper conducts a performance comparison study among four different observers for state estimation of rotary inverted pendulum (RIP) system. The observation techniques, invoked in estimation, are the high gain observer (HGO), Extended State Observer (ESO), Linear Extended State Observer (LESO), and nonlinear extended state observer (NESO). The effectiveness of the proposed observer is assessed...Show More
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