Useful ISC resources

paper: ”Feedback for physicists: A tutorial essay on control”, John Bechhoefer Rev. Mod. Phys. 77, 783–836 (2005)
book: Control System Design: An Introduction to State-Space Methods by Bernard Friedland
book 2: Modern control Engineering by K. Ogata, Prentice-Hall 2002 (4th Edition)
book 3: Digital Control Systems by Franklin, Addison-Wesley 1998
online notes:6.302 Feedback Systems Recitation Notes (MIT)
An Overview of Control Theory and Digital Signal Processing, lectures given at LIGO by Luca Matone
”Feedback Systems: An Introduction for Scientists and Engineers” by Karl J. Åström and Richard M. Murray. The text is available from Murray's website at Caltech; there's a wiki too.

Introduction to Digital Filters (online book by Julius Smith at Stanford)
Digital Signal Processing: a practical approach by Ifeachor E. C. and Jervis B. W.
Adaptive filter theory by Simon S. Haykin
Adaptive filters: Theory and applications by B. Farhand - Boroujeny
book: “Understanding Digital Signal Processing” by Richard Lyons
Q&A site: http://dsp.stackexchange.com/

Wengsheng Hua's thesis - HEPI. Chapters: Complementary blend filters, polyphase FIR implementation, tilt-horizontal coupling, linear MIMO system analysis, nonlinear MIMO analysis, global control.
Q&A site: http://ask.ligo.org/