Download or read book Modeling and Controller Design of an Industrial Hydraulic Actuator Using System Identification and Estimation Approach written by Siti Hasmira Mhd. Hanafiyah and published by . This book was released on 2010 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydraulic Servo systems written by Mohieddine Jelali and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: This up-to-date book details the basic concepts of many recent developments of nonlinear identification and nonlinear control, and their application to hydraulic servo-systems. It is very application-oriented and provides the reader with detailed working procedures and hints for implementation routines and software tools.

Download or read book Nonlinear Control Techniques for Electro Hydraulic Actuators in Robotics Engineering written by Qing Guo and published by CRC Press. This book was released on 2017-08-14 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nonlinear Control Techniques for Electro-Hydraulic Actuators in Robotics Engineering meets the needs of those working in advanced electro-hydraulic controls for modern mechatronic and robotic systems. The non-linear EHS control methods covered are proving to be more effective than traditional controllers, such as PIDs. The control strategies given address parametric uncertainty, unknown external load disturbance, single-rod actuator characteristics, and control saturation. Theoretical and experimental validations are explained, and examples provided. Based on the authors' cutting-edge research, this work is an important resource for engineers, researchers, and students working in EHS.

Download or read book Modeling and Controller Design for an Industrial Electro Hydraulic Actuator System written by Mukhtar Abdulsalam Irhouma and published by . This book was released on 2010 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electro Hydraulic Actuation Systems written by J. Jaidev Vyas and published by Springer. This book was released on 2018-09-01 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book serves as a unique integrated platform, which not only describes the design methodology of electro-hydraulic actuation systems but also provides insights into the design of the servo valve, which is the most important component in the system. It presents a step-by-step design process, comparative tables, illustrative figures, and detailed explanations. The book focuses on the design and testing of electro-hydraulic actuation systems, which are increasingly being used in motion control applications, particularly in those where precision actuation at high operational rates is of prime importance. It describes in detail the design philosophy of such high-performance systems, presenting a system used as a physical test setup together with experimental results to corroborate the calculations. Of particular interest are the electro-hydraulic servo valves that form the heart of these actuations. These valves are complex and not much data is available in open literature due to OEM propriety issues. In this context, the book discusses the elaborate mathematical models that have been derived and an approach to validate the mathematical models with test results. Presenting the complex methodology in simple language, it will prove to be a valuable resource for students, researchers, and professional engineers alike.

Download or read book Modelling and Controller Design of an Industrial Electro hydraulic Actuator System Using Servo Valve written by Jason Micheal and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling and Control of Precision Actuators written by Tan Kok Kiong and published by CRC Press. This book was released on 2018-10-08 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling and Control of Precision Actuators explores new technologies that can ultimately be applied in a myriad of industries. It covers dynamical analysis of precise actuators and strategies of design for various control applications. The book addresses four main schemes: modeling and control of precise actuators; nonlinear control of precise actuators, including sliding mode control and neural network feedback control; fault detection and fault-tolerant control; and advanced air bearing control. It covers application issues in the modeling and control of precise actuators, providing several interesting case studies for more application-oriented readers. Introduces the driving forces behind precise actuators Describes nonlinear dynamics of precise actuators and their mathematical forms, including hysteresis, creep, friction, and force ripples Presents the control strategies for precise actuators based on Preisach model as well as creep dynamics Develops relay feedback techniques for identifying nonlinearities such as friction and force ripples Discusses a MPC approach based on piecewise affine models which emulate the frictional effects in the precise actuator Covers the concepts of air bearing stages with the corresponding control method Provides a set of schemes suitable for fault detection and accommodation control of mechanical systems Emphasizing design theory and control strategies, the book includes simulation and practical examples for each chapter; covers precise actuators such as piezo motors, coil motors, air bearing motors, and linear motors; discusses integration among different technologies; and includes three case studies in real projects. The book concludes by linking design methods and their applications, emphasizing the key issues involved and how to implement the precision motion control tasks in a practical system. It provides a concise and comprehensive source of the state-of-the-art developments and results for modeling and control of precise actuators.

Download or read book Design and Modeling of a New Electro Hydraulic Actuator written by Vladimir Pastrakuljic and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis addresses the issues of design and mathematical model identification of an advanced hydraulic system referred to as Electro Hydraulic Actuator (EHA). In the design part, insights into system design methodology are presented and used for the EHA prototype manufacturing. To get better knowledge of the system behavior, extensive open loop tests were performed. Test results are presented in the time and frequency domain, and it was concluded that system behavior is nonlinear. In the modeling part, a nonlinear mathematical model of the EHA is derived. Some of the unknown model parameters had to be identified experimentally by optimization. The last step in the system mathematical modeling was open and closed loop model validation using the experimental data. Proposed nonlinear mathematical model gives good correspondence with experimental data and can be used for system studying or controller design. Performed test show that the EHA system has high positioning accuracy (0.01mm), fairly high bandwidth (23 Hz with 20kg inertial load) and is easy to control. It shows significant benefits when compared to conventional hydraulic systems in the areas of control, efficiency and physical dimensions.

Download or read book Fault tolerant Control of Hydraulically powered Actuators Using Fractional order PID Schemes written by Ali Maddahi and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic actuators are used extensively in various equipment including aircraft, robots and heavy-duty machinery. One of the common problems in hydraulic systems is occurrence of faults such as the actuator internal leakage. Some faults need to be detected properly to prevent actuator malfunctioning. For example, the internal leakage deteriorates the system performance as it causes the fluid to move between cylinder chambers. Model-based fault detection techniques require a model of the hydraulic actuator and faults or an estimation of system parameters. In practice, there is no accurate model to describe some faults. Application of data-driven fault detection techniques is more desirable. One of the main challenges, due to the faults, in hydraulic actuation systems is the controller design. If a controller is not able to compensate for fault effects, it may lead to considerable losses. Therefore, there is a need for designing fault-tolerant controllers (FTCs). Data-driven techniques of controller design are good solutions to overcome challenges associated with obtaining models or estimating system and fault parameters. In this thesis, the applications of data-driven techniques of the fault detection and controller design to the hydraulic actuators are investigated and exemplified with detection of the internal leakage fault and design of a control system tolerant to the leakage. First, a set of multiscale measures is quantified in various healthy and faulty operating modes and a comparison is carried out, between the measures, to identify the most reliable indicator(s) in detecting various levels of the leakage. Comparison results indicate that the wavelet transform is the best technique, amongst the employed multiscale measures, for the internal leakage detection. Next, a fractional-order PID (FOPID) position controller is designed using experimental data. Efficacy of the designed controller in tracking various reference inputs, in presence of different system uncertainties, is examined through experiments. Finally, a methodology is developed for designing an FOPID-based FTC that does not require a prior knowledge about the model and parameters of the system and fault or emulation of the fault in experimental setup. The methodology is based on introduction of a set of synthetic errors to the hydraulic actuator. Experimental results prove that the methodology works well for a hydraulic actuator experiencing the internal leakage.

Download or read book Modeling Analysis and Control of Hydraulic Actuator for Forging written by Xinjiang Lu and published by Springer. This book was released on 2017-12-30 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes load modeling approaches for complex work pieces and batch forgings, and demonstrates analytical modeling and data-driven modeling approaches for known and unknown complex forging processes. It overcomes the current shortcomings of modeling, analysis and control approaches, presenting contributions in three major areas: In the first, several novel modeling approaches are proposed: a process/shape-decomposition modeling method to help estimate the deformation force; an online probabilistic learning machine for the modeling of batch forging processes; and several data-driven identification and modeling approaches for unknown forging processes under different work conditions. The second area develops model-based dynamic analysis methods to derive the conditions of stability and creep. Lastly, several novel intelligent control methods are proposed for complex forging processes. One of the most serious problems in forging forming involves the inaccurate forging conditions, velocity and position offered by the hydraulic actuator due to the complexity of both the deformation process of the metal work piece and the motion process of the hydraulic actuator. The book summarizes the current weaknesses of modeling, analysis and control approaches. are summarized as follows: a) With the current modeling approaches it is difficult to model complex forging processes with unknown parameters, as they only model the dynamics in local working areas but do not effectively model unknown nonlinear systems across multiple working areas; further, they do not take the batch forging process into account, let alone its distribution modeling. b) All previous dynamic analysis studies simplify the forging system to having a single-frequency pressure fluctuation and neglect the influences of non-linear load force. Further, they fail to take the flow equation in both valves and cylinders into account. c) Conventional control approaches only consider the linear deformation force and pay no attention to sudden changes and the motion synchronization for the multi-cylinder system, making them less effective for complex, nonlinear time-varying forging processes subject to sudden changes.

Download or read book Modeling of Electrohydraulic Servovalve Controlled Oscillator by Using System identification Method written by American Society of Mechanical Engineers. Winter Annual Meeting and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the high torque of hydraulic oscillators, they have been used in may applications. To improve accuracy of position control of the servo valve-controlled hydraulic oscillator, a precise mathematical model is necessary for analysis and design of the self-tuning controller. In this paper, a System Identification technique was applied to obtain discrete time-invariants as well as a time-variant mathematical model of the system. In addition, the suitable order and parameters of the model are given for the convenience of advanced digital control design.

Download or read book Hydraulic Control Design and Modeling Techniques written by A. L. Helinski and published by . This book was released on 1989 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report details the analysis of a hydraulic actuator system. The analysis consists of designing control compensation by means of deriving a frequency response from a non-linear mathematical model and using classical control theory. This hydraulic actuator system will be used on the Turret Motion Base Simulator (TMBS) which is a unique six degree of freedom simulator being developed. A considerable effort is being made to develop analytical models of laboratory simulators so that a complete assessment can be made before testing is conducted. Analytical studies may point to various problems with the system and control design considerations may be made early in the development stage. The results of selected command signals representing terrain profiles can be simulated with the analytical model before being applied to the actual system. As the level of complexity in laboratory testing is increased the more important becomes analytical studies. (JES).

Download or read book Controller Design of Hydraulic Actuator System Using Self tuning and Model Reference Adaptive Control written by Sazilah Salleh and published by . This book was released on 2016 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book System Identification Model and Predictive Functional Control of an Electro hydraulic Actuator System written by Noor Hanis Izzuddin Mat Lazim and published by . This book was released on 2015 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling System Identification and Control of Electromagnetic Actuators written by Alexandru Forrai and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter is dedicated to modeling, system identification, and control of electromagnetic actuators with the main focus on the actuators used in magnetic levitation, in fuel injection systems, and in variable valve timing (VVT). These actuators have a simple structure, good reliability, and low manufacturing costs. However, from control viewpoint, they are nonlinear systems and are open-loop unstable. Therefore, mathematical modeling, system identification-based parameter estimation, and control strategies are presented, when the moving armature is controlled around an equilibrium position or is controlled between the two extreme positions of the armature.

Download or read book Modeling Design Identification Drive and Control of a Rotary Actuator with Magnetic Restoration written by Sajjad Mohammadi Yangijeh and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rotary actuators have been widely used in the industry. This thesis investigates the design, modeling, identification, drive, and control of an actuator with magnetic restoration. The design considerations are explained, FEM is used in the analysis, and a prototype is built for lab experiments. A design-oriented analytical model is developed for the actuator, in which the coil torque is obtained using the solution of Laplace's equation in the elliptical coordinates, and the reluctance torque is derived by an approach named differential flux tubes. In addition, nonlinear and linearized electromechanical models are developed for control system designs and dynamic studies. To obtain higher accuracy, the eddy-currents in the laminations and the magnet are also modeled using an analytical solution of 1-D and 2-D diffusion equation and extracting a lumped-element circuit for system-level analysis. It adds to the accuracy of the model to a large degree. The impact of the pre-sliding friction on the mechanical dynamic is studied as well. Then, identification of the model is performed. Next, an op-amp-based drive circuit for the current control loop is proposed, modeled, and designed. Then, three DSP-based position control techniques are implemented: pole placement with voltage drive, pole placement with current drive, and nonlinear control with feedback linearization. State observers are employed to estimate the unmeasured states. The control techniques are evaluated and compared through time response indices such as rise time, overshoot, steady-state error, and large-signal tracking, as well as by frequency domain indices like bandwidth, robustness, phase margin, sensitivity, disturbance rejection. A method of eddy-current plated is also proposed for inductance reduction. In the end, a new effectiveness index is proposed.