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Neural observer by coordinate transformation (2005)
Journal Article
Delgado, A., Hou, M., & Kambhampati, C. (2005). Neural observer by coordinate transformation. IEE Proceedings Control Theory and Applications, 152(6), 698-706. https://doi.org/10.1049/ip-cta%3A20045069

Nonlinear control affine systems with maximum relative degree and a class of nonlinear differential equations can be transformed into a state representation known as the normal form. Based on the normal form an observer is designed using neural netwo... Read More about Neural observer by coordinate transformation.

Amplitude and frequency estimator of a sinusoid (2005)
Journal Article
Hou, M. (2005). Amplitude and frequency estimator of a sinusoid. IEEE transactions on automatic control, 50(6), 855-858. doi:10.1109/TAC.2005.849244

A dynamic estimator with global convergence property is proposed to simultaneously reconstruct the unknown values of the amplitude, frequency, and offset of a sinusoidal signal which is measured. Several versions of the estimator along with illustrat... Read More about Amplitude and frequency estimator of a sinusoid.

Observing a three-tank system (2005)
Journal Article
Hou, M., Xiong, Y., & Patton, R. (2005). Observing a three-tank system. IEEE Transactions on Control Systems Technology, 13(3), 478-484. doi:10.1109/TCST.2004.839578

Observability analysis and observer synthesis are studied for a three-tank water process. Observability of the process is considered under various assumptions on measurements. The observer design takes into account singularity of nonlinear observers.... Read More about Observing a three-tank system.