Title :
Optimal error feedback and realization for roundoff noise minimization in linear discrete-time systems with full-order state observer feedback
Author :
Hinamoto, Takao ; Doi, Akimitsu ; Wu-Sheng Lu
Author_Institution :
Hiroshima Inst. of Technol., Hiroshima, Japan
Abstract :
The optimization problem of error-feedback and realization to minimize the roundoff noise in a closed-loop system with full-order state observer feedback subject to l2-scaling constraints is investigated. It is shown that joint optimization of error-feedback and realization is not needed when utilizing a general-matrix error-feedback loop because the optimal error-feedback matrix, in closed-form, can be determined in advance. An analytic technique is developed for obtaining the optimal realization that minimizes the roundoff noise subject to l2-scaling constraints. A numerical example is presented to demonstrate the validity and effectiveness of the proposed technique.
Keywords :
closed loop systems; discrete time systems; linear systems; matrix algebra; minimisation; observers; state feedback; closed-loop system; full-order state observer feedback; general-matrix error-feedback loop; joint optimization problem; l2-scaling constraints; linear discrete-time systems; optimal error realization; optimal error-feedback matrix; roundoff noise minimization; Closed loop systems; Joints; Minimization; Noise; Observers; Optimization; Quantization (signal);
Conference_Titel :
Circuits and Systems (ISCAS), 2015 IEEE International Symposium on
Conference_Location :
Lisbon
DOI :
10.1109/ISCAS.2015.7169307