Download or read book Design and Implementation of Energy Generated Magneto rheological Damper for Vehicle Suspension Systems written by Raju Ahamed and published by . This book was released on 2015 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magneto rheological (MR) fluid based dampers are very promising for semi-active or adaptive suspension control system which is filled with MR fluid. Its huge advantages attract the researchers to use it in more advanced application. MR damper's damping force can be controlled by changing the viscosity of its internal magneto-rheological fluids (MRF). However the requirement of external power source is one of the major concerns. Self-powered MR damper is one of the recent advancement which is accomplished only for double ended MR damper. In this work an energy generated mono tube MR damper has been designed and investigated with power generation which has a huge demand in the vehicle suspension system. This damper combines the advantages of energy harvesting (reusing wasted energy) and MR damping (controllable damping force). This multifunctional integration would bring great benefits such as energy saving, size and weight reduction, lower cost, high reliability, and less maintenance for the MR damper systems. The proposed MR damper model consists permanent magnet and coil combination of energy generation. Two magnetic fields are induced inside this damper. One is in the outer coil of the power generator and another is the piston head coils. A 2-D Axisymmetric model of energy generated MR damper is developed in COMSOL Multiphysics where it is analyzed extensively by finite element method and its hardware model is tested by Universal Testing Machine (UTM). The complete magnetic isolation between these two fields is accomplished here, which can be seen in the finite element analysis and damper characteristic analysis. The energy generation ability of the MR damper model is tested by UTM and oscilloscope combination and the maximum output voltage is measured around 0.8 volts by oscilloscope. Finally, experimental dampers characteristic analysis is performed by using RD-8041-1 MR Damper. These results are compared with the hardware model experimental results, which clearly validate the hardware model damper characteristic.

Download or read book Magneto Rheological Damper Design for Vehicle Suspension Systems written by Ali Alghamdi and published by . This book was released on 2013 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nonlinear Design Modeling and Simulation of Magneto Rheological Suspension written by Hrishikesh B. Zambare and published by . This book was released on 2017 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Suspension has been the most important subsystem of the vehicle viewed as a system. The ride comfort and vehicle handling performance are affected by the suspension design. Automotive technology has been continuously incorporating developments over the past few decades to provide the end users with a better comfort of driving. Multi-objective optimization of MR damper with objective function of maximizing damping force generated by MR damper with the geometrical parametric constraint function is achieved in this research using pattern search optimization technique. Research focuses on design, modeling, and simulation of active suspension using non-linear theory of the Magneto-Rheological (MR) damper with consideration of the hysteresis behavior for a quarter car model. The research is based on the assumption that each wheel experiences same disturbance excitation. Hysteresis is analyzed using Bingham, Dahl's, and Bouc-Wen models. Research includes simulation of passive, Bingham, Dahl, and Bouc-wen models. Modeled systems are analyzed for the six road profiles, including road type C according to international standards ISO/TC108/SC2N67. Furthermore, the comparative study of the models for the highest comfort with less overshoot and settling time of vehicle sprung mass are executed. The Bouc-Wen model is 36.91 percent more comfortable than passive suspension in terms of damping force requirements and has a 26.16 percent less overshoot, and 88.31 percent less settling time. The simulation of the Bouc-Wen model yields a damping force requirement of 2003 N which is 97.63 percent in agreement with analytically calculated damping force generated by MR damper. PID controller implementation has improved the overshoot response of Bouc-Wen model in the range of 17.89 percent-81.96 percent for the different road profiles considered in this research without compromising on the settling time of system. PID controller implementation further improves the passenger comfort and vehicle ride handling capabilities. The interdisciplinary approach of systems engineering principles for the suspension design provides unique edge to this research. Classical systems engineering tools and MBSE approach are applied in the design of the MR damper. Requirement traceability successfully validates the optimized MR damper.

Download or read book Magnetorheological Fluid Technology written by Seung-Bok Choi and published by CRC Press. This book was released on 2012-11-08 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetorheological Fluid Technology: Applications in Vehicle Systems compiles the authors’ recent work involving the application of magnetorheological (MR) fluids and other smart materials in vehicles. It collects concepts that have previously been scattered in peer-reviewed international journals. After introducing the physical phenomena and properties of MR fluids, the book presents control methodologies for effectively controlling vehicle devices and systems featuring MR fluids. The authors also introduce the hysteresis identification of MR fluid and discuss its application through the adoption of the Preisach and polynomial models. They then describe the application of MR-equipped suspension systems in passenger, tracked, and railway vehicles; the application of MR brake systems in passenger vehicles, motorcycles, and bicycles; and the application of several MR technologies in heavy vehicles. The final chapter explores the use of haptic technologies for easily operating vehicle instruments and achieving optimal gear shifting with accelerator pedals. Assuming some technical and mathematical background in vibration, dynamics, and control, this book is designed for scientists and engineers looking to create new devices or systems for vehicles featuring controllable MR fluids. It is also suitable for graduate students who are interested in the dynamic modeling and control methodology of vehicle devices and systems associated with MR fluid technology.

Download or read book Design Semi active Suspension Using Magneto rheological Damper written by Muhamad Amzansani Abd Wahab and published by . This book was released on 2010 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focused on the development of semi- active suspension by using magneto-rheological damper. The MR damper is a type of damper that used MR fluid as working fluid which enables us to change damping force and setting of suspension without need to setting manually damper itself. It can be achieve by changing the current flow on it magnetic circuit.This thesis first introduces MR technology through a discussion of MR fluid and then by giving a broad overview of MR devices that is being developed. After giving the reader an understanding of MR technology and devices, MR damper basics are presented. This section includes a discussion of MR damper types, mathematical fundamentals, and an approach to magnetic circuit design. With the necessary background information covered, MR dampers for automotive use are then discussed. Then come to design part. By using specification same as Proton Waja passive damper, the model was develop by using SOLIDWORK software. The design used twin tube damper with same size of outer tube of OEM damper. The parameter like number of turn, length and diameter of the wire, current induced, magnetic field generated, head piston velocity, and force produced by MR damper was be calculated and discussed. The result show the damper produced 6475.441 Newton of maximum force when 3 ampere of current being applied to the damper. The force generated by damper at 0.5, 1, 1.5, 2, 2.5 and 3 ampere was plotted in a single graph versus piston head velocity in order to give better view of result.

Download or read book Electro rheological Fluids Magneto rheological Suspensions And Their Application Proceedings Of The 6th International Conference written by Kiyohito Koyama and published by World Scientific. This book was released on 1999-01-18 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrorheological (ER) fluids and magnetorheological (MR) suspensions show dramatic and reversible rheological changes when the electric or magnetic field is applied. Over the past several years, their performance and reliability have been significantly improved and their potential applications and acceptances have been widened. These fluids may make a tremendous impact on industry and technology.This volume contains a total of 107 papers which are most up to date and which give probably the best information on the state of the art of the ERF/MRS field. It covers the fields of material technology, mechanisms, bridging structure and properties on ER fluids, MR suspensions and ferrofluids, and the fields of their applications, i.e. damping devices, clutches, braking devices, actuators, optical devices, polishing devices and so on.

Download or read book Design Optimization of Magneto rheological Damper with Improved Dispersion Stability written by Md Meftahul Ferdaus and published by . This book was released on 2015 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetorheological (MR) damper is one of the most advanced applications of semi active damper in controlling vibration. Due to its continuous controllability in both on and off state its practice is increasing day by day in the vehicle suspension system. MR damper's damping force can be controlled by changing the viscosity of its internal magnetorheological fluids (MRF). Still there are some problems with this damper such as MR fluid's sedimentation, optimal design configuration considering all components of the damper, power consumption and temperature rising etc. In this paper both 2-D Axisymmetric and 3-D models of MR Damper are built and finite element analysis is done widely for design optimization. Different configurations of MR damper piston, MR fluid gap, air gap and dampers housing are simulated for comparing the dampers performance variation. From the analytical results it is observed that among different configurations single coil MR damper with linear plastic air gap, top and bottom chamfered piston end and medium MR fluid gap shows better performance than other configurations by maintaining the same input current and piston velocity. Further a prototype MR fluid is developed experimentally where the carbonyl iron particles are coated with xanthan gum to reduce sedimentation and the experimental results are noticeably verifying the improved sedimentation stability. The performance of dampers' containing this new prototype MR fluid are observed by simulation models. Here the outcomes are obviously declaring damper improvement as they are delivering larger damping force compare to the MR damper with conventional fluid. In addition a power saving MR damper model has developed by finite element analysis using ANSYS software, this energy saving MR damper model is obviously showing the solution of damper's temperature rising problem. At last an experimental analysis is performed by using RD-8041-1 MR Damper. These results are compared with the optimized MR Damper's simulation results, which clearly validate the simulated results.

Download or read book Magneto rheological Damper Modeling Using LPV Systems written by Vicente Alberto DÍaz Salas and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The present research is focused in the dynamical modeling of a Magneto-Rheological Damper as a semi-active actuator. This device shows a complex behavior including non-linearities and hysteresis, features that are to be emulated by a dynamical system, in order to express mathematically the conduct of this device under mechanical vibrations. The M R damper is part of a semi-active suspension system, and by the use of the information of the model designed in this thesis it might be possible to produce a control design for the quarter of car system, in order to regulate the vibrations received by the suspension, incrementing the comfort and safety of the passengers in the vehicle. In order to obtain experimental data from this semi-active device, a set of tests were performed, introducing displacement and current excitation patterns into the shock absorber and measuring the dynamical response of it. Us i ng the experimental results, a set of state of the art models (Semi-Phenomenologial, Phenomenological, B l a c k - B o x) were learned to reproduce this data. This work proposes an L P V (Linear Parameter-Varying) system, as a model for the M R damper, wh i ch is capable of reproduce both the non-linear and hysteretic behavior of the damper.The L P V model proposed has the capacity to create a relationship between the main excitation variables, and the damper force, in a single structure. Due to this feature, it might later be added to a bigger strategy, such as for control or observation. The model was designed using an L P V polynomial system and an switching variable, wh i ch depends on the input velocity and current. Output results shows a higher accuracy from the L P V proposed model, in comparison wi th the state of the art models reviewed: it has E SR index average values below 0.04 while most of the studied models only achieve values below 0.1. The proposed model of this thesis provides a dynamical description of the Magneto-Rheological damper that generates a l ink between the main input variables implicated on the damper, and the output force. This feature might become an advantage to later provide an extended model of the quarter of car, and design a controller to regulate the vibrations applied to the suspension.

Download or read book Controllable Suspension Design Using Magnetorheological Fluid written by Anria Strydom and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparison of Magneto rheological Damper Models written by Javier Antonio Ruíz Cabrera and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of automotive systems is concerned with ride comfort and handling performance of the vehicle. In the last decade, semi-active suspension systems have been greatly analyzed for automotive applications as they offer the reliability of passive devices, but maintain the versability and adaptability of active systems. Semi-active Magneto-Rheological (MR) dampers present a viable choice for suspension systems. In an MR damper, the damping characteristics can be modified with the application of a magnetic field to the coil inside the tube of the device. Although MR dampers are greatly promising for the control of vehicle suspension systems, their major drawback lies on their non-linear and hysteretic behavior. This behavior makes it a challenge to developed a model for the system. Furthermore, the first step in designing a control strategy for a suspension system is modeling the behavior of the damper in an accurate manner. The present research is focused in the modeling of an MR damper. The problem statement is centered on what type of model of an MR damper can be developed, wich can accurately predict the highly non-linear behavior of the system and can be optimal for online control. For this purpose, various sets of experimental data were obtained from an industrial MR damper, Then, four state-of-the-art MR damper models were trained, analyzed and compared using quantitative and qualitative techniques. Each of the models was selected from four main modeling approaches, phenomenological, semi-phenomenological, black-box, and fuzzy-based. By the end of the research, a novel model for an MR damper was presented, wich combined fuzzy techniques with semo-phenomenological modeling. The results showed that the proposed structure was able to accurately predict the behavior of the MR damper and was suitable for control purposes. The final results can be greatly applicable to the automotive industry, where better comfort and handing control systems could be developed. In addition, the results could be useful to the vast number of industries and applications where MR dampers are employed.

Download or read book Design and Development of a Compressible Magneto rheological Damper written by Pramod Raja and published by . This book was released on 2009 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this study is to assess the feasibility of a small-scale compressible magneto-rheological (CMR) damper for a tracked vehicle suspension system. The feature of the CMR damper combines the functions of a liquid spring and a controllable fluid damper together, which increases the mobility of these heavy vehicles while improving the stability and safety as well. The proposed CMR damper consists of a cylinder, piston-rod arrangement with an annular MR valve. The internal pressure in the chambers on either side of the piston develops the spring force. The damping force is developed when the fluid flows through the MR valve. A fluid-mechanics based model is considered to predict the behavior of the device under sinusoidal input. In addition, the non-dimensional analysis of the proposed model is presented which can be used as a tool for design analysis and scalability of the CMR dampers. The performance of the CMR damper filled with pure silicone oil and a MR fluid are studied under oscillatory vibrations for various frequencies and applied magnetic fields. Experimental results show good agreement with the theoretical predictions. The CMR damper generates a considerable spring rate and controllable damping force based on the required tracked vehicle specifications.

Download or read book Modeling of Semi active Magnetorheological Damper for Automobile Suspension System written by Mahmudur Rahman and published by . This book was released on 2014 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: The design of vehicle suspension systems is an active research field in which one of the objectives is to improve the passenger's comfort through the vibration reduction of the internal engine and external road disturbances. Comfort and road handling in car can be improved by including a semi-active suspension system, controlled by varying the damping based on measurements of the vehicle motions. This research deals with design and development of a quarter-car suspension using magneto-rheological damper (MR). A quarter-car of two degree-of-freedom (DOF) system is designed and constructed on the basis of the concept of a four-wheel independent suspension to simulate the actions of a semi-active vehicle suspension system. The selection of an appropriate MR damper model is crucial, since it provides the suitable current and force relationship and allows finding the appropriate force to the system. The behavioral characteristic of selected MR damper model is simulated and analyzed with different current input. An effective control structure is a key function of this research to determine the complexity of the control design and parameter tuning process. The performance of Proportional Integral Derivative (PID) and Linear Control Regulator (LQR) controller is designed based on the system requirements. In this research, the PID controller is verified experimentally under different road excitations to improve the ride quality and vehicle safety.

Download or read book Magneto rheological MR Damper Design for Off road Vehicle Suspensions with Flow Blocking Ability written by Riaan F. Meeser and published by . This book was released on 2015 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advanced Seat Suspension Control System Design for Heavy Duty Vehicles written by Haiping Du and published by Academic Press. This book was released on 2020-05-22 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Seat Suspension Control System Design for Heavy Duty Vehicles provides systematic knowledge of the advanced seat suspension design and control for heavy duty vehicles. Nowadays, people are paying more and more attention to ride comfort and the health of drivers and passengers. This is especially for heavy duty vehicles, where drivers/operators are exposed to much severer vibrations than those in passenger vehicles due to a harsh working environment, operating conditions, and long hour driving, etc. Seat suspension systems can effectively help to suppress the high magnitude vibration transmitted to drivers with relatively simple structure and low cost, and hence are widely adopted in heavy duty vehicles. This book helps researchers and engineers to have a comprehensive understanding of the seat suspension system and to conduct in-depth studies on seat suspension design and control; this book covers a wide range of perspectives about seat suspension design and control methods. Describes the variable damping, variable stiffness, and, especially, variable inertance seat suspensions Provides the advanced and comprehensive knowledge about semi-active vibration control Introduces the multiple-DOF seat suspension Includes the innovative hybrid seat suspension and nonlinear seat suspension All the introduced designs have been prototyped and experimentally validated Provides Matlab Simulation programming codes

Download or read book Proceedings of the third International Conference on Automotive and Fuel Technology written by and published by Allied Publishers. This book was released on 2004 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electrorheological Fluid Damper for Road Vehicle Suspension System written by Sanjay Ramchandra Kumbhar and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: The suspension systems of automobiles, trucks, motorcycles and many other vehicles customarily have passive hydraulic "shock absorber" or damper assemblies connected in parallel with springs between the vehicle frame and axle components to minimize motion of the vehicle frames and to thereby enhance the riding comfort, stability and/or safety of the vehicles. To overcome the limitations of conventional shock absorbers for vehicle dynamics, passive dampers are being increasingly replaced by adjustable dampers. Electrorheological (ER) and Magnetorheological (MR) fluids experience changes in rheological properties (yield stress, plasticity, and elasticity) when they are subjected to an applied electric or magnetic field respectively. The designed ER fluid damper makes use of the ER-effect in compression and rebound. In this work, an attempt is made to design, develop & test the smart fluid damper, particularly ER Fluid damper, for road vehicle suspension system which will give the advantages over the conventional shock absorbers.

Download or read book Syntheses and Analyses of Semi active Control Algorithms for a Magneto rheological Damper for Vehicle Suspensions written by En Rong Wang and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: