Heart sound chaos anti-controller based on chaotic characteristics

The invention discloses a heart sound chaos anti-controller based on chaotic characteristics. In accordance with the chaotic characteristics of a heart sound signal as well as the difference of normal and abnormal heart sound signals in chaos, and in the combination with differential tracking thought, the theory of a PID (proportion-integration-differentiation) control method and the theory of fuzzy control, control, applicable to heart sound chaos anti-control, is designed by virtue of a chaos feedback control method, so that an abnormal (pathological) heart sound signal can track a normal (healthy) heart sound signal in real time and the rapid transformation of pathological heart sound into regular beating can be excited. On the basis of chaos analysis on the heart sound signal which undergoes anti-control, a result indicates that the chaos of the heart sound is significantly enhanced. The heart sound chaos anti-controller can generate mechanical vibration which conforms to the law of heart sound chaos anti-control, and can conduct regular beating on the chest of a patient with cardiac premature beat disease from external side, so as to assist the patient with cardiac premature in rapidly recovering a normal heart beat state and to relieve discomfort in the patient.