Chaotic ranges of a unified chaotic system and its chaos for five periodic switch cases

In this paper, a unified chaotic system is studied in detail. Non-chaotic ranges within α [0, 1] are found, where α is the constant parameter of the system. Chaotic range longer than α [0, 1], α [−0.015, 1.152], is discovered, which is the extended chaotic range of unified chaotic system. Next, its chaos behaviors for five continuous periodic switch cases, k sin2 ωT, m sin ωt, 0 1 triangular wave, −1 1 triangular wave, and 0 1 sawtooth wave, are presented.