The problem of chaos control is considered for the modified Chua circuit
Conditions are given for the asymptotic stabilization of a fixed-point in the presence of the feedback control term , which is introduced in the equation for the variable. is the -component of the fixed-point under consideration. This point is shown to be unstable in the absence of a controller. Then, the author derives conditions for the stabilization of the fixed-point in the presence of adaptive controller , where is updated according to the following algorithm . Finally, adaptive synchronization of two unidirectionally coupled identical Chua systems is considered.