Research the vehicle type has the same purpose that we have in Vietnam and around the world, reviews the pros, cons, why not fit the users in Vietnam.Research infrastructure in Vietnam and the difficulties of the elderly and disabled people mobility in the move. The road for wheelchair usersThe flyover, footpaths, public works such as beaches, parks, ...School corridors, housing, buildingStairs, steps, tam, Elevator, escalator (vivo city), ...Survey:Needs a wheelchair to integrate and up and down stairsDesired rate of wheelchair users in Vietnam.Given the research goal, the score should fix, improvement of wheelchair dedicated to elderly and disabled people mobility in Vietnam.Draw a sketch by hand.Study the form of off-road wheels, escalation, and. (tracks 3-wheel system, combined, form cakes belts, move with the leg robot, ...).Study of dynamic equilibrium mechanism (xy-cylinders, actuators, step motors, pendulum, ...).The study of size matching Chair frame chassis as well as how to link.Research on the power source, the engine, the control circuit.Back testing the theory in textbooks of Physics 10, 11, 12 and the extensive documentation, advanced in the library, the scientific articles. The calculation formula of mo-men force, the length of the way of the smooth, medium fits medium capacity of the batteries and motor.The experiment measured the friction force between the chain system and the road surface.Looking for 3D design software and run the simulation.Study and design of the vehicle rolling on the software.To the neighborhood market, mechanical and material on the Web to learn about the material intended (where to sell, prices, pros cons, the size, nature, ...) and planning to ensure the intended use of the material can be purchased or homemade.Test run the car on the simulation of three-dimensional space, discuss the results, giving way to remedy these limitations, errors, continue to test, improve until reaching a complete design.Given a projected price. Conduct a self built model and product to check the success of the target subject set out correctly.Up a list of the materials needed to buy, jobs to do, find the Guide and place of work. Studied mechanical.Conducting parts machining can not buy.Assemble, edit, complete.Product testing activities.More protection gear system acts like the emergency brake guard vehicles stood fixed on road surface, side slopes, stairs, ... to ensure absolute safety.Psychological research users (fear, discomfort, etc.) and the fix to bring back the feeling of comfort and safety.Product upgrade:Beauty, comfort and more comfort.Reduce the volume of the same ability to dismantle for transportation.Upgrade the Chair has the ability to change the sitting posture.Automatic dynamic balancing system.Hazard warning systems and credit out SOS.
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