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Author: Fawaz Yahya Annaz
Publisher:
ISBN: 9781680153415
Category : Actuators
Languages : en
Pages : 122
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Book Description
Author: Fawaz Yahya Annaz
Publisher:
ISBN: 9781680153415
Category : Actuators
Languages : en
Pages : 122
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Book Description
Author: Mirko Mazzoleni
Publisher: Springer Nature
ISBN: 3030617998
Category : Technology & Engineering
Languages : en
Pages : 256
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Book Description
This book presents recent results on fault diagnosis and condition monitoring of airborne electromechanical actuators, illustrating both algorithmic and hardware design solutions to enhance the reliability of onboard more electric aircraft. The book begins with an introduction to the current trends in the development of electrically powered actuation systems for aerospace applications. Practical examples are proposed to help present approaches to reliability, availability, maintainability and safety analysis of airborne equipment. The terminology and main strategies for fault diagnosis and condition monitoring are then reviewed. The core of the book focuses on the presentation of relevant case studies of fault diagnosis and monitoring design for airborne electromechanical actuators, using different techniques. The last part of the book is devoted to a summary of lessons learned and practical suggestions for the design of fault diagnosis solutions of complex airborne systems. The book is written with the idea of providing practical guidelines on the development of fault diagnosis and monitoring algorithms for airborne electromechanical actuators. It will be of interest to practitioners in aerospace, mechanical, electronic, reliability and systems engineering, as well as researchers and postgraduates interested in dynamical systems, automatic control and safety-critical systems. Advances in Industrial Control reports and encourages the transfer of technology in control engineering. The rapid development of control technology has an impact on all areas of the control discipline. The series offers an opportunity for researchers to present an extended exposition of new work in all aspects of industrial control.
Author: Stewart Andrew Vaculik
Publisher:
ISBN:
Category :
Languages : en
Pages : 602
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Book Description
The basic components of electromechanical actuators include geartrains, prime movers, bearings, shafts, sensors, cooling components, and fasteners. A common requirement that drives a typical actuator design process is providing the output torque and speed needed for the given actuator task in a minimum volume/weight geometry. Two important questions to be answered in this research relate to the scaling and configuration management of an electromechanical actuator design. The first question is: "Given an electromechanical actuator design, how can it be scaled to produce another design that meets a different set of requirements (e.g., torque, speed, weight, life)?" The second question is: "Given an electromechanical actuator design, how can a designer change the configuration to obtain another design that meets the same set of requirements in a different geometric package/shape?" The answers to these questions rely on the development of a science of design process for electromechanical actuators to replace the current design process, which is based primarily on designer experience and often requires multiple design iterations. The Robotics Research Group (RRG) is currently working on this science of design process, which includes parametric design rules that can be used to reveal how actuator design parameters affect its key performance indicators. To improve this science, this research develops a detailed parametric model of the primary actuator components for a standard actuator, summarizes the design rules available from this model, formally defines the concepts of scaling and configuration management, and lays out a step-by-step process to implement these concepts. The parametric model used in this research builds on the existing models of previous RRG researchers. The design rules are developed based on the fundamental modeling equations that govern the design of the actuator components. The concepts of scaling and configuration management are defined as two of the fundamental design operations that can be applied to an electromechanical actuator. A scaling and configuration management process, which requires the parametric model, is developed and applied to an existing set of baseline actuator designs. The result of this process is the creation of actuator designs of intermediate size between the sizes of existing actuators, which makes it suitable for populating an actuator family. To handle the size and complexity of the actuator parametric model, this research introduces the model reduction technique of monotonicity analysis and illustrates how it is well suited for the electromechanical actuator design problem. A future goal of the RRG is to create a software tool that will contain a complete actuator parametric model, component design rules (of this and future research), and scaling and configuration management options, which will allow users to design actuators with a minimum amount of time, cost, and knowledge
Author: Mirko Mazzoleni
Publisher:
ISBN: 9783030618001
Category :
Languages : en
Pages : 0
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Book Description
This book presents recent results on fault diagnosis and condition monitoring of airborne electromechanical actuators, illustrating both algorithmic and hardware design solutions to enhance the reliability of onboard more electric aircraft. The book begins with an introduction to the current trends in the development of electrically powered actuation systems for aerospace applications. Practical examples are proposed to help present approaches to reliability, availability, maintainability and safety analysis of airborne equipment. The terminology and main strategies for fault diagnosis and condition monitoring are then reviewed. The core of the book focuses on the presentation of relevant case studies of fault diagnosis and monitoring design for airborne electromechanical actuators, using different techniques. The last part of the book is devoted to a summary of lessons learned and practical suggestions for the design of fault diagnosis solutions of complex airborne systems. The book is written with the idea of providing practical guidelines on the development of fault diagnosis and monitoring algorithms for airborne electromechanical actuators. It will be of interest to practitioners in aerospace, mechanical, electronic, reliability and systems engineering, as well as researchers and postgraduates interested in dynamical systems, automatic control and safety-critical systems. Advances in Industrial Control reports and encourages the transfer of technology in control engineering. The rapid development of control technology has an impact on all areas of the control discipline. The series offers an opportunity for researchers to present an extended exposition of new work in all aspects of industrial control.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 82
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Book Description
Author: Stephen PALMER
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Author: Kevin Stuart Kendrick
Publisher:
ISBN:
Category :
Languages : en
Pages : 374
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Book Description
Aircraft control mechanisms, such as those that operate the flaps, ailerons, rudders, etc., are almost exclusively driven by hydraulic-based systems. Their popularity in flight control systems is not unfounded; hydraulic actuators are quite torque-dense and benefit from decades of development bringing operating performance to a high level. On the other hand the infrastructure to support this system increases weight, adds system development complexity, and reduces aircraft maintainability [Jensen et al, 2000]. Based on recent Electro-Mechanical Actuator (EMA) development and design efforts at the Robotics Research Group (RRG), a new opportunity exists to replace current hydraulic flight control systems with those powered by electricity through a national program [Tesar, 2005]. A literature review of the topic found a 30 year old effort by AiResearch to develop a similarly powered hingeline actuator with given traditional performance goals (torque capacity, redundancy, output speed, reliability). In this report,a thorough analysis is performed on each major component group to quantitatively evaluate this baseline device. Using component technologies developed at RRG, this report proposes a dual torque-summing electromechanical actuator, each with a star compound / hypocyclic combined gear train, designed to exceed the performance of the original (1976) AiResearch project. This preliminary design exercise includes a layout of the entire actuator along with an appropriate analysis of major components including bearings, gear train, motor, housing, and release mechanism. The performance of this gear train is critical to overall actuator success and fundamental analytics have already been developed in this area [Park and Tesar, 2005]. Finite Element Analysis on the gear train and housing provide early design feedback and verification of actuator performance characteristics. In particular, simulation results show the gear stiffness, load sharing, and torque capacities exceed analytical estimates. Finally, four different comparisons are presented that evaluate configuration variations of the two designs based on applicable performance criteria. Results show the RRG fault-tolerant actuator has a marked improvement over the baseline in average stiffness (14.2x), reflected inertia (3.2x) and nominal torque density (3.4x). The chapter next lists actuator test methods and aircraft qualification standards. Finally, a summary of future work is detailed in a ten step outline to bring this EMA technology to a level of early deployment in a large range of aircraft systems.
Author: Gilbert Ray Hardesty
Publisher:
ISBN:
Category :
Languages : en
Pages : 86
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Book Description
Author: Christopher Elmose Gloria
Publisher:
ISBN:
Category :
Languages : en
Pages : 294
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Book Description
Mechanical systems are becoming increasingly complex, containing hundreds of design parameters where the imperative is to increase performance while reducing costs. To meet these demands will require a paradigm shift away from trial and error procedures for monolithic structures and one-off designs towards an open architecture where global technology diffusion and systems on demand can become the accepted basis for significant economic return on investment. To achieve this goal, the design process must be more completely understood for the designer to handle increasingly complex systems in a manner that improves design. It is the goal of this work to convey the need for improved design science and to lay a foundation for the design of electromechanical actuators using fundamental principles and parametric formulations. Overall, this research provides the electromechanical actuator designer with a framework and some initial tools to aid in the design synthesis process with the ultimate goal of improving actuator design. This entails the development of a step by step process beginning with the selection of the actuator architecture based on specified design priorities. This is followed by the development of a parametric model of the chosen actuator configuration based on the design priorities and including the most important design parameters. Given this model, a method for extracting useful information in the form of design tradeoffs is developed. This work uses a method called algebraic reduction to manipulate the parametric model and gain design insights. An example demonstrating this design synthesis framework is given and includes the application of algebraic reduction to polynomial systems.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 550
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Book Description
