建立了一种改进的新型超混沌系统模型,并提出了实现该超混沌系统同步的控制方法.然后,将该同步控制方法应用于基于混沌掩盖的数字信息保密通信.该方案中不需要将秘密传输的有用信息输入到驱动系统,且发送端只需要向响应系统传递包含两个状态变量的控制信息即可实现混沌同步.因此,该方法比已有方法具有更好的实用性.理论推导和计算机数值仿真实验表明了该方法的有效性. An improved hyperchaotic system model is proposed and a control method to realize the synchronization of the hyperchaotic system is proposed.Then, the synchronization control method is applied to the digital information secure communication based on chaos masking.The scheme does not need to be confidential The useful information transmitted is input to the drive system, and the sender needs only to pass the control information containing two state variables to the response system to realize the chaos synchronization. Therefore, this method is more practical than the existing methods. Computer simulation results show the effectiveness of this method.