In this paper, we use a hybrid feedback control method to study lag synchronization\nin uncertain drive-response dynamical networks with a feature that the unknown\nsystem parameter exists in the node dynamics. We then design two hybrid feedback\ncontrol methods to achieve the lag synchronization including the linear and adaptive\nfeedback control. With the designed controllers and update laws for the system\nparameter in the node dynamics, we obtain two theorems on the lag synchronization\nbased on the LaSalle invariance principle. When the lag synchronization is achieved,\nwe identify the unknown system parameter. Finally, we provide two numerical\nexamples to verify the efficiency of the proposed control schemes.
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