84 results about "Chaotic oscillators" patented technology

The invention discloses a multi-frequency weak signal detection method for detecting the failure of a rotor in the early stage. A related method is adopted to conduct prophase noise removal, and a chaotic oscillator array scanning method is adopted to realize simultaneous detection of a plurality of frequency weak signals represented by the same failure, that is, signals with noise are denoised through related calculation, a related function is sent to the chaotic oscillator array and serves as a part of chaotic system periodic driving force, and the weak periodic signal of a signal to be detected can be detected through the change of chaotic system phase locus. The method improves the signal-to-noise ratio of the signal to be detected, and completes the detection of multi-feature weak signal through identifying the state of Duffing oscillator, namely the change of phase locus pattern. Therefore, the method has the advantages of simplicity, intuition, definite physical significance and high detection signal-to-noise ratio. Furthermore, the method is capable of completing the weak signal detection of a plurality of known frequencies and easy for engineering realization, thereby having greater development potential.

The invention relates to a disturbed chaotic double-helix random number generator comprising a linear feedback shift register. The disturbed chaotic double-helix random number generator is characterized by further comprising a control signal generation circuit, a capacitor array, a double-helix oscillator and a sampling quantization circuit. The linear feedback shift register is connected with the control signal generation circuit, and used for outputting a pseudorandom sequence; the control signal generation circuit is connected with the capacitor array, and used for receiving the pseudorandom sequence, generating and outputting a control signal; the capacitor array is connected with the double-helix oscillator, and used for receiving the control signal and outputting an array capacitance value; the double-helix oscillator is connected with the sampling quantization circuit, and used for receiving the array capacitance value and then outputting a chaotic signal; and the sampling quantization circuit receives the chaotic signal, converts the chaotic signal into a digital signal and outputs the digital signal.. Since the initial value of the chaos-based double-helix oscillator is sensitive and unpredictable, the chaotic double-helix oscillator can continuously oscillate and generate output without outside intervention. For the outside disturbance, the representation of the chaotic oscillator is variation of track, and the variation of track is also hard to predict for the complexity.