tailieunhanh - Climbing and Walking Robots part 2

Tham khảo tài liệu 'climbing and walking robots part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 2 Mechanical Synthesis for Easy and Fast Operation in Climbing and Walking Robots Antonio Gonzalez-Rodriguez Angel G. Gonzalez-Rodriguez and Rafael Morales University of Castilla-La Mancha University of Jaen Spain 1. Introduction This chapter deals with the importance of the mechanical design in devices used in mobile robots. A good synthesis of mechanisms will improve the robot s operation. This idea will be explained via two examples. In the first example the mechanical design of a staircase climbing wheelchair will be presented. A wheelchair is intended to be a commercial unit and its control unit must therefore be robust efficient and low-cost. The second example deals with the mechanical design of an easy-to-operate leg for a mobile robot. This is a research project but easy operation is fundamental if we are to ensure that the steps that the leg takes are as rapid as possible which is of great importance in making actual walking robots faster. 2. Design of a new Design for a Staircase Wheelchair Review of the current approaches People with disabilities find that their mobility is improved with the help of powered wheelchairs. However these chairs are often rendered useless by architectural barriers whose total elimination from the urban landscape is expensive if not impossible. These barriers appear in many different geometrical shapes of which staircases are the most difficult obstacle to overcome. Various designs have been developed to allow a wheelchair climb a stair. One of the first and most common solutions are tracks Yoneda et al. 2001 Lawn et al. 2001 owing to the simplicity of their control and their robustness in adapting to different shapes such as spiral staircases. However this solution has important drawbacks the vehicles that use tracks are uncomfortable and of low efficiency when they work in barrier-free environments a high friction coefficient between the edge of the step and the track can deteriorate this edge and the entrance to and .

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