True random signal generated by hyperchaotic system with parameter perturbation
Shiqin Jiang · Control theory & applications · 2010
By analyzing the basic characteristics of a four-wing hyperchaotic system with three positive Lyapunov exponents,we find out the influences of three adjustable parameters to the dynamics of system,and determine the best perturbed parameter for generating a new hyperchaotic system by parameter perturbation.A new circuit noise sample circuitry is constructed by using a floating AD input in an embedded system.After amplitude-scale transformation,and the circuit noise data is added to the hyperchaotic system as a parameter perturbation,the output signal of this system will be a true random signal rather than the pseudo one.