Title :
Realizations for fixed-point implementation of controllers and filters with peak-to-peak scaling
Author :
Viassolo, Daniel E.
Author_Institution :
Xerox Corp., El Segundo, CA, USA
Abstract :
The problem of implementing a given linear time-invariant controller or filter in a finite wordlength processor is studied. We provide methods for finding state-space realizations that: (1) minimize the impact of quantization errors on performance, and (2) prevent the peak values of the controller states from exceeding processor ranges. These methods are illustrated through numerical examples.
Keywords :
controllers; digital control; digital filters; fixed point arithmetic; quantisation (signal); state-space methods; controller states; digital controllers; digital signal processors; exceeding processor ranges; finite wordlength processor; fixed point implementation; linear time invariant controller; linear time invariant filter; numerical examples; optimal realization problem; peak to peak scaling; quantization errors; state space realizations; Arithmetic; Constraint optimization; Degradation; Digital control; Digital filters; Digital signal processing; Digital signal processors; Hydrogen; Nonlinear filters; Quantization;
Conference_Titel :
American Control Conference, 2003. Proceedings of the 2003
Print_ISBN :
0-7803-7896-2
DOI :
10.1109/ACC.2003.1238918
