Dynamics Of An Articulated Towboat

It is considerable the number of research around the subject of motorization of conventional manual wheechairs, however the found models don't take care of the real necessities of the wheelchair users. In the manufacture the necessity of an independent vehicle for the load transport exists. With the increasing necessity in Brazil to develop the knowledge in the area of independent vehicles and not being still available a towboat of tests adjusted to approach such problems. The articulated towboat is an intelligent independent vehicle to tow loads. The users of conventional manual wheelchairs will go to use this vehicle when to need motorization, that is in ascent cases, descending of ramps, or long distances. This vehicle possesss practical applications that they can assist systems of support to the rehabilitation of physical and motor deficiencies and also systems automatized of manufacture. The purpose of this paper is to develop some important contribution in the area of independent vehicles in the aid for the people with special needs. Copyright © 2004 Society of Automotive Engineers, Inc.Alvarenga, F.B., Dedini, F.G., Analysis of the possibilities of the Conventional Wheelchairs Motorization (2001) Proceedings of COBEM 2001- XVI Brazilian Congress on Mechanical Engineering, , Uberlândia -MG, Brasil, Nov. 26-30Alvarenga, F.B., (2002) Desenvolvimento de Sistemas de Motorização Alternativa Para Cadeiras de Rodas Convencionais, p. 192. , Máster Thesis Faculty of Mechanical Engineering, Unicamp, Campinas,SP, BrazilHaubenwallner, G., (1988) Drive Motor, Which is Supplied by an Energy Source, for Disk-Shaped or Wheel-Shaped Members with a Control Mechanism, , US 4,773,495, September 27Dudley, F.E.A., (1975) Motorized Wheel, , US 3,908,776, September 30Brudermann, (1984) Chassis for Invalid Wheelchairs, , US 4,436,320, March 13Jones, G.C., (1990) Kit for Converting a Hand-Powered Wheelchair to an Electric Motor-Power Wheelchair, , US 4,961,473, October 9Iii, G., (1992) Wheelchair Drive Assembly, , US 5,161,630, November 10Alvarenga, F.B., Dedini, F.G., Development of systems of alternative motorization for conventional wheelchairs SAE Technical Paper Series, 2003-01-3563-E, pp. 1-10. , Danvers, MA(1985) Associação Brasileira de Normas Técnicas, NBR 9050, , Adequação das edificações e do mobiliário urbano à pessoa deficiente. Rio de JaneiroJarosz, E., Determination of the workspace of wheelchair users (1996) International Journal of Industrial Ergonomics, 17 (2), pp. 123-133. , DOI 10.1016/0169-8141(95)00044-5Fisette, P., Ferriere, L., Raucent, B., Vaneghem, B., Multibody approach for modelling universal wheels of mobile robots (2000) Mechanism and Machine Theory, 35 (3), pp. 329-351. , DOI 10.1016/S0094-114X(99)00017-8Campion, G., Bastin, G., D'Andrea-Novel, B., Structural properties and classification of kinematic and dynamic models of wheeled mobile robots (1996) IEEE Transactions on Robotics and Automation, 12 (1), pp. 47-62. , PII S1042296X96004976Sasi, S., High mobility platform (2002) Technical Report of Department of Mechanical Engineering, , Adoo

Development Of Systems Of Alternative Motorization For Conventional Wheelchairs

In this work the main objective is the development of systems for motorization of conventional wheelchairs, and the great mass of wheelchairs now available in Brazil of the simplest type than they don't allow the pure and simple conversion for motorization. In this aspect the problem comes as a challenge because the great variety of models and types of wheelchairs and the lack of a rigorous normalization impose the use of technologies of search of solutions and the application of methodology knowledge and systematic of project. In this way, firstly a study will be accomplished on the object wheelchair, containing: historical, origin, types and characteristics. The following step will be the search of the possibilities of motorizing conventional wheelchairs, limitations and applications. Eventually, after the definition of a basic type to serve as model, the systematic of project will be applied for development of a product and the execution of a prototype in scale or functional for evaluation of possibilities. In the development of the product a methodology will be used and systematic of project. The objective of this work is study the possibilities to motorize a conventional wheelchair. This article analyses the possibilities of motorization. Copyright © 2003 Society of Automotive Engineers, Inc.Cooper, R.A., Wheelchairs and related technology for the millennium (2000) Journal of Rehabilitation Research and Development, 37 (3)Weelman, P., Design of a wheelchair with legs for people with motor disabilities (1995) IEEE Trans. Rehabilitation Engineering, 3 (4)Becker, M., (2000) Suspension System for An All-terrain Wheelchair, pp. 462-464. , ResnaBecker, M., (2000), p. 136. , Aplicação de Tecnologias Assistivas e Técnicas de Controle em Cadeiras de Rodas Inteligentes". Campinas: Faculdade de Engenharia Mecânica, Universidade Estadual de Campinas, Tese (Doutorado)Abledata Fact Sheet (1994) Manual Wheelchair, (23). , www.abledata.com/text2/manwhch.htm, July, ""Alvarenga, F.B., Dedini, F.G., Analysis of the possibilities of the Conventional Wheelchairs Motorization (2001) Proceedings of COBEM 2001- XVI Brazilian Congress on Mechanical Engineering, , Uberlândia-MG, Brasil, Nov. 26-30Abledata Fact Sheet (1994) Powerd Wheelchair, (24). , www.abledata.com/text2/powwch.htm, July, ""Alvarenga, F.B., (2002), p. 192. , Desenvolvimento de Sistemas de Motorização Alternativa para Cadeiras de Rodas Convencionais", Dissertação de Mestrado, Unicamp, BrazilKirby, R.L., Wheelchair stability: Important, measurable and modifiable (1996) Technology and Disability, 5 (1), pp. 75-80Zwicky, F., Creative Morphology, , ourworld.compuserve.com/homepages/canmor/"Akao, Y., (1996) Qualitv Function Deployment: Integrating, Customer's Requirements into Product Design, , Cambridge: Massachusetts, Productivity PressCheng, L.C., (1995), QFD: planejamento da qualidade. Belo Horizonte: Fundação Christiano OttoniOhfuji, T., Ono, M., Akao, Y., (1997), Métodos de desdobramento da qualidade. Belo Horizonte: Fundação Christiano OttoniMiguel, P.C., Cheng, L.C., QFD in Brazil: Present status and future perspectives (2001) 7th International Symposium on Quality Function Deployment, pp. 147-152. , TóquioDedini, F.G., (2000), p. 128. , Metodologia e sistemática de projeto.Campinas: Universidade Estadual de Campinas, ApostilaCsillag, J.M., (1996), Análise do valor: metodologia do valor. São Paulo: Atla

Modeling Of The Powered Module For Motorizing Manual Wheelchairs

Among manual wheelchair users has upper-extremity pain and injuries when self-propelling. However, manual propelling provides aerobic exercise. Powered wheelchairs are efficient to up/down ramps and long distance traveling, but it is heavy, bulky and the cost is very expensive. The ideal wheelchair system should have the advantages of both manual and powered wheelchairs. Therefore, it was developed the powered module for motorizing manual wheelchairs as a solution. This device is an intermediate alternative between manual and powered wheelchairs; it converts a manual wheelchair in a powered wheelchair. The module is a powered unit, which is attached, in all types of manual wheelchairs, quickly and easily by the user. It can be used for pushing or pulling the wheelchair in many environments. The purpose of this paper is to determine the dynamic behavior of the powered module-wheelchair. Copyright © 2005 Society of Automotive Engineers, Inc.Scherer, M.J., Cushman, L., Measuring subjective quality of life following spinal cord injury: A validation study of assistive technology device predisposition assessment (2001) Disabil Rehabil, 23, pp. 387-393Algood, S.D., Impact of a pushrim-activated power-assisted wheelchair on the metabolic demands, stroke frequency, and range of motion among subjects with tetraplegia (2004) Arch Phys Med Rehabil, 85, pp. 1865-1871Sie, Upper extremity pain in the postrehabilitation spinal cord injured patient (1992) Arch Phys Med Rehabil, 73, pp. 44-48Cooper, R.A., Wheelchairs and related technology for the millennium (2000) Journal of Rehabilitation Research and Development, 37 (3)Gaal, R.P., Johnson, D.O., Initial evaluation of power add-on units for lightweight wheelchairs (1994) Proceedings of Resna Annual Conference, pp. 356-358Clark, L.L., A human factors approach to power a manual folding wheelchair: The quick-connect power drive/steer attachment (1995) Proceedings of the 1995 Human Factors & Ergonomics Society 39th Annual Conference, p. 1062. , San Diego, CA, October 7-11Cooper, R.A., Push for power. Rehab Management (2004) The Interdisciplinary Journal of Rehabilitation, 17 (2), pp. 32-36. , MarLevy, C.E., Variable ratio pushrim-activated power-assist wheelchair eases wheeling over a variety of terrains for elders (2004) Arch Phys Med Rehabil, 85, pp. 104-112(1997) Motor Vehicle Dynamics, 43, p. 532. , Genta, G. Ed. World ScientificWong, J.Y., (2001) Theory of Ground Vehicles, p. 528. , 3rd ed. New York: John Wiley & Sons, IncGillespie, T.D., (1992) Fundamentals of Vehicle Dynamics, p. 495. , 6th ed. Warrendale: Society of Automotive Engineers, IncGonçalves, J.C., Ambrosio, J.A.C., Road vehicle Modeling requirements for optimization of ride and handling (2005) Multibody System Dynamics, , http://www.springerlink.com/media/2L5X18DXVG6UPLLUPJ4P/Contributions/T/4/ 3/U/T43U0280T725U473.pdf, Available in Access in 20 th, March, 2004Becker, M., Aplicação de Tecnologias Assistivas e Técnicas de Controle em Cadeiras de Rodas Inteligentes (2000) Campinas: Faculdade de Engenharia Mecânica, p. 136. , Universidade Estadual de Campinas, Tese (Doutorado