通过增加绝对值项，构造了一种新的三维混沌系统，对其动力学特性进行了研究．借助于混沌理论和数值仿真，分析了系统的平衡点性质、Lyapunov 维数、Poincaré 截面、最大Lyapunov 指数谱、分岔图等．结果表明: 所提出的三维自治系统具有分数维、多个不稳定的平衡点以及层次结构的Poincaré 映射，在较广的参数范围内呈现出混沌特性; 系统可以产生四翼混沌吸引子，具有复杂的动力学特性．

In this paper,a new three-dimension chaotic system is constructed by adding an absolute item in thesystem,and the dynamic properties of the new system are investigated.Then,by virtue of the chaos theory and thenumerical simulation,the equilibrium point,the Lyapunov dimension,the Poincaré section,the largest Lyapunovexponent spectrum and the bifurcation diagram of the system are analyzed.It is indicated that the proposed threedimensionautonomous system exhibits chaotic features in a wide parameter range and is of fractional dimension,multiple unstable equilibrium points and layered Poincaré mapping.Moreover,Owing to its complex dynamic properties,the system can generate four-wing chaotic attractors.