Axiomatic Design of a Customizable Pneumatic Automotive Suspension with Hydraulic Ride Height Regulator PDF Download
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Author: Amy Lai Wong
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
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Book Description
(Cont.) By keeping a similar overall design for the proposed system, adaptability of the proposed system is increased. The coil spring of the common SLA suspension system is replaced by an air spring with a fluid chamber in series. The air spring has a variable spring stiffness that is related to the volume of air inside. Because air is compressible, the volume changes with the force applied, yielding a nonlinear relationship that must be compensated for by an active control system that monitors the overall volume of the air spring and compensates for any changes during use by addition or removal of air. The fluid chamber is responsible for keeping the chassis at the same level at all times by taking into account the changing volume of the air spring and the changes in the road by having incompressible fluid pumped in and out of the chamber.
Author: Amy Lai Wong
Publisher:
ISBN:
Category :
Languages : en
Pages : 30
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Book Description
(Cont.) By keeping a similar overall design for the proposed system, adaptability of the proposed system is increased. The coil spring of the common SLA suspension system is replaced by an air spring with a fluid chamber in series. The air spring has a variable spring stiffness that is related to the volume of air inside. Because air is compressible, the volume changes with the force applied, yielding a nonlinear relationship that must be compensated for by an active control system that monitors the overall volume of the air spring and compensates for any changes during use by addition or removal of air. The fluid chamber is responsible for keeping the chassis at the same level at all times by taking into account the changing volume of the air spring and the changes in the road by having incompressible fluid pumped in and out of the chamber.
Author: Hrishikesh V. Deo
Publisher:
ISBN:
Category :
Languages : en
Pages : 201
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Book Description
The design of existing suspension systems typically involves a compromise solution for the conflicting requirements of comfort and handling. For instance, cars need a soft suspension for better comfort, whereas a stiff suspension leads to better handling. Cars need high ground clearance on rough terrain, whereas a low center of gravity (CG) height is desired for swift cornering and dynamic stability at high speeds. It is advantageous to have low damping for low force transmission to vehicle frame, whereas high damping is desired for fast decay of oscillations. To eliminate these trade-offs, a novel design for a customizable automotive suspension system with independent control of stiffness, damping and ride-height is proposed in this thesis. This system is capable of providing the desired performance depending on user preference, vehicle speed, road conditions and maneuvering inputs. The design, fabrication and control of the customizable suspension prototype are discussed. The application of variable stiffness and variable ride-height suspension system to achieve improved vehicle dynamics is studied. Application to control of vehicle dynamics parameters required bandwidth and power input beyond the capability of the first prototype.
Author: Way Luu
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
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Book Description
Axiomatic Design principles are used to design a vehicle suspension system. The use of Axiomatic Design helps to guide the design of a decoupled system. The Design Matrix (DM) illustrates the independence among the Functional Requirements (FRs) and the Design Parameters (DPs). The ultimate goal is the design of a fully independent suspension system in which the FRs stiffness, ride height, and damping can be varied as needed. To achieve the three FRs, three DPs are chosen - the volume of an air spring for stiffness, the volume of fluid in a fluid chamber for ride height, and orifice control for damping. This thesis investigates two DPs in depth, the air spring and fluid chamber. The nonlinearity of the air spring is studied and its effect on the system as a whole is simulated in Simulink. Two control systems are proposed in which stiffness and ride height are kept constant. The desired values for stiffness and ride height are predetermined by the user or by an optimization algorithm. The physical design for the control systems is also proposed in this thesis. The design for the air spring system uses an electropneumatic design, and the design for the fluid chamber system uses an electrohydraulic servovalve design.
Author: Byung-Hoon Lee
Publisher:
ISBN:
Category :
Languages : en
Pages : 370
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Book Description
Author: Robert Bilgor Peliks
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
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Book Description
Author: Avesta Goodarzi
Publisher: Springer Nature
ISBN: 3031218043
Category : Technology & Engineering
Languages : en
Pages : 96
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Book Description
This book describes the procedures of developing an adaptive suspension system with examples. This book gives a thorough introduction to air suspension systems, which contain height leveling systems, electronic control systems, design fundamentals, performance superiority, etc. This book encompasses all essential aspects of suspension systems and provides an easy approach to their understanding and design. Provides a step-by-step approach using pictures, graphs, tables, and examples so that the reader may easily grasp difficult concepts. This book defines and examines suspension mechanisms and their geometrical features. Suspension motions and ride models are derived for the study of vehicle ride comfort. Analysis of suspension design factors and component sizing along with air suspension systems and their functionalities are reviewed.
Author: United States. Dept. of commerce. Building code committee
Publisher:
ISBN:
Category : Plumbing
Languages : en
Pages : 302
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Book Description
Author: Nam P. Suh
Publisher: Mit-Pappalardo Series in Mecha
ISBN: 9780195134667
Category : Mathematics
Languages : en
Pages : 503
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Book Description
Design education, research, and practice have recently seen considerable evolution as university programs, researchers, journals, and conferences systematize design as a discipline and science. Nam P. Suh's book Axiomatic Design: Advances and Applications contributes to this systematic and scientific base and presents a fresh perspective on design, establishing a rational framework for the discipline. The book follows Suh's successful publication, The Principles of Design (OUP 1990), although the two books are substantially different in both content and approach. The first three chapters of Axiomatic Design cover the fundamental principles of axiomatic design. The following chapters offer a complete treatment of the design of systems, software, materials and materials processing, manufacturing systems, and product design. Suh shows how a scientific and systematic approach to design improves efficiency, productivity, savings, reliability, and quality for industries that currently rely on ad hoc design systems; Axiomatic Design contains the principles and practical knowledge necessary to achieve these improvements. Perfect for senior and graduate design and mechanical engineering students as well as professional engineers, this unique text offers the tools necessary to design with ease and elegance and serves as a stepping-stone in the ever-evolving intellectual science of design. Features · Applies the principles of axiomatic design to a variety of real-life situations including mechanism design, software engineering, and basic business processes · Includes numerous integrated case studies using axiomatic design to solve real-life design challenges · Draws material from consulting cases with industrial firms throughout the world · Requires no prerequisite reading (The Principles of Design can be read for clarification)
Author: Geoffrey Howard
Publisher: SAE International
ISBN: 0768008727
Category : Technology & Engineering
Languages : en
Pages : 474
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Book Description
Through appendices and diagrams, Car Suspension and Handling, 4th Edition outlines the purpose and history of vehicle suspension systems, while defining the basic parameters of suspension geometry. In addition, the book delves into human sensitivity to vibration, and offers data on durability, tire background information, steering calculations and suspension calculations.
Author: Hugh Jack
Publisher: Lulu.com
ISBN: 0557344255
Category : Technology & Engineering
Languages : en
Pages : 646
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Book Description
An in depth examination of manufacturing control systems using structured design methods. Topics include ladder logic and other IEC 61131 standards, wiring, communication, analog IO, structured programming, and communications.Allen Bradley PLCs are used extensively through the book, but the formal design methods are applicable to most other PLC brands.A full version of the book and other materials are available on-line at http://engineeronadisk.com
