Research Article
A Novel Weak Signal Detection Method of Electromagnetic LWD Based on a Duffing Oscillator
Figure 5
Duffing oscillator state diagram.
| (a) System phase trajectory diagram () |
| (b) Homoclinic orbit map () |
| (c) System bifurcation diagram () |
| (d) System chaotic diagram () |
| (e) System critical chaotic state () |
| (f) System periodic state () |