Title :
High order sigma-delta modulator design via sliding mode control
Author :
Plekhanov, Sergey ; Shkolnikov, Llya A. ; Shtessel, Yuri B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Alabama Univ., Huntsville, AL, USA
Abstract :
In this paper a sliding mode approach to stability analysis and design of sigma-delta modulators is introduced. It is shown that a continuous-time sigma-delta modulator can be studied as a nonlinear dynamical system with feedback control. Representing a modulator as "plant" and "controller" transforms a modulator design problem into a control design problem. Moreover, using advanced sliding mode techniques; new structures of sigma-delta modulator can be obtained. A non-linear second order modulator is proposed and analyzed as a part of high order non-linear modulators family.
Keywords :
continuous time systems; control system synthesis; feedback; modulators; nonlinear dynamical systems; sigma-delta modulation; stability; variable structure systems; continuous time system; controller; feedback control; modulator design problem; nonlinear dynamical system; nonlinear second order modulator; sigma delta modulator; sliding mode control; stability analysis; Analog-digital conversion; Delta-sigma modulation; Digital modulation; Finite impulse response filter; Modulation coding; Pulse modulation; Sampling methods; Signal resolution; Sliding mode control; Transfer functions;
Conference_Titel :
American Control Conference, 2003. Proceedings of the 2003
Print_ISBN :
0-7803-7896-2
DOI :
10.1109/ACC.2003.1239137
