ABSTRACT
34As the quality of life is rising constantly, the fitness industry has developed quickly, and the innovation and development of fitness equipment has been in high demand. In this chapter, a new type of fitness cycle is introduced, the so-called Bionic Fitness Cycle (Bio-Cycle), which can be driven using either hands or legs or any combination of any hand and leg. By changing the riding mode, the user can do many different exercises such as stair-climbing, cheetah-like running, horse-like walking, and so on, as well as cycling. The new motion modes and unique transmission mechanism are analyzed, followed by the design of a four-drive transmission system. After the ergonomical design of the structure, a compound resistance system based on electromagnetic principles is analyzed and its principle for control and exercise motion determination is introduced. Finally, a Bio-Cycle prototype is developed and tested.
