A new type of chaotic generator is studied by constructing a three_segment piec ewise_linear odd function with variable breakpoint α. The characteristic of the chaotic generator presented is that when the breakpoint α varies in th e range of 0 <α≤1, there is a route to chaos through period_doubling bifurcations, and the doubl e_ layer single spiral, single_layer double_layer double spiral chaotic attractors can be generated. in particular, double-layer are found in our circuit experiment for first time so far as we know. the b ifurca tion diagram, lyap unov exponents λ_1,λ_2,λ_3, maximal lyapunov exponent λ_maxand spectrum of also investigated. associated electronic designed experimental result given, which ver ified by computer simulation experiment.< div>

Keywords:
• chaotic generator/
• double_layer double spiral/
• double_layer single spi ral/
• circuit experiment