DYNAMICS OF SPIRAL WAVES AND THEIR CONTROL

Spiral wave is a classical example of spatiotemporal pattern, and is important both theoretically and in practice. It concerns various fields, such as mathematics, physics, mechanics, astronomy, chemistry, biology, medicine. In this paper, dynamical behaviors of spiral waves are discussed, which include the formation of spiral wave, common forms of spiral wave, the motion of the tip and the breakup of spiral wave. Spiral wave and spatiotemporal chaos are harmful in some actual systems, so their controls are necessary. The control of spiral wave can be realized by feedback signals and external forces, and by the adjustment of parameters.