| In this paper, chaotic quantized synchronization under information constraints is studied. For the chaotic systems modeled in Lurie form, we study chaotic observer-based synchronization under information constraints and controlled synchronization under information constraints. For chaotic master system and its slave system, which are connected by a limited capacity channel, because of the extreme sensitivity to the initial value and the unpredictability of the state, we design effective observer of the master system and then get the estimation of the state. A practical quantized scheme is designed such that the synchronization error is ISS on the transmission error, while the transmission error converges to zero exponentially. Therefore, the synchronization error converges to zero asymptotically under information constraints.The obtained result overcomes difficulties of previous works such that the synchronization error converges to zero under information constraints. Compared with the previous results, we have some breakthrough in this paper. Finally, a simulation example is presented to illustrate the result. |