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In process of the product development , it is a necessary
aspect to evaluate the characteristics of the product
performing with ergonomics , such as comfort、safety and
efficiency. For getting a designed bicycle more reasonable and
humanistic ,the rider''s performing efficiency on various
bicycles is described、defined 、analysed and discussed from
the viewpoints of anatomy、biomechanics、kinematics、mechanism、
anthropometry and errgonomics,and thee citical angles of joints
are decided. A person-machine systematic model is constructed
through the concepts in computer graphics and knowledge-based
expert system；In addition,an open simulation system for the
development and evaluation of the bicycle ergonomic design is
created and applied to get correct informations quickly.
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