研究趣向：

在動態系統此研究領域的研究趣向是在「動態系統之混沌現象與其應用」上，可分為兩類，（I）混沌現象之發掘； （II）混沌現象應用於保密通訊。
    （I）混沌現象之發掘： 關於混沌現象之發掘的工作，嚴格說來是有兩種型態，一種是運用數值模擬的方式找尋並佐證混沌現象之存在[1,2,6]或是理論證明指出混沌現象之存在[8]，另一種是在實驗室直接將混沌現象製造並呈現出來[3]。
    （II）混沌現象應用於保密通訊： 藉由混沌動態系統的混亂現象，實地的發展出一通訊系統架構，應用於保密通訊上。此保密通訊架構，不同於傳統的編碼，亦非屬最大質數加密法之傳輸理論[4,5,7]。


參考著作：

  1. S. M. Chang, T. C. Lin and W. W. Lin, Chaotic and Quasiperiodic Motions of Three Planar Charged Particles, Int. J. Bifurcation Chaos, Vol. 11, No. 7 (2001), pp. 1937–1951.

  2. S. M. Chang, T. C. Lin and W. W. Lin, Dynamics of Vortices in Two-Dimensional Bose-Einstein Condensates, Int. J. Bifurcation Chaos, Vol. 12, No. 4 (2002), pp. 739–764.

  3. C. Juang, S. M. Chang, N. K. Hu, C. Lee and W. W. Lin, Laser Chaos Induced by Delayed-Feedback and External Modulation, Jpn. J. Appl. Phys., Vol. 44, No. 11 (2005), pp. 7827-7831.

  4. S. L. Chen, S. M. Chang, W. W. Lin and T. T. Hwang, Digital Secure-Communication Using Robust Hyper-Chaotic Systems, Int. J. Bifurcation Chaos, Vol. 18, No. 11 (2008), pp. 3325-3339.

  5. S. M. Chang, M. C. Li and W. W. Lin, Asymptotic Synchronization of Modified Logistic Hyper-Chaotic Systems and its Applications, Nonlinear Analysis: Real World Applications, Vol. 10, Issue 2 (2009), pp. 869-880.

  6. F. Y. Lin, S. Y. Tu, C. C. Huang and S. M. Chang, Nonlinear Dynamics of Semiconductor Lasers under Repetitive Optical Pulse Injection, IEEE Journal of Selected Topics in Quantum Electronics, Vol. 15, No. 3 (2009), pp. 604-611.

  7. S. L. Chen, T. T. Hwang, S. M. Chang and W. W. Lin, A Fast Digital Chaotic Generator for Secure Communication, Int. J. Bifurcation Chaos, Vol. 20, No. 12 (2010), pp. 1-19.

  8. S. M. Chang and H. H. Chen, Applying Snapback Repellers in Resource Budget Models, Chaos, Vol. 21 (2011) 043126.

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