Title :
Dynamic quantizer design for MIMO systems based on communication rate constraint
Author :
Sawada, Kenji ; Okajima, Hiroshi ; Matsunaga, Nobutomo ; Minami, Yuki
Author_Institution :
Dept. of Mech. Eng. & Intell. Syst., Univ. of Electro-Commun., Chofu, Japan
Abstract :
This paper proposes a design method of dynamic quantizers for MIMO networked control systems. It is well known that feedback type dynamic quantizers are effective for quantization of the data series in the meaning of noise shaping. The dynamic quantizer includes a set of a dynamic filter and a static quantizer. When it is required to use the quantizer under the network communication, the data size of signal should be minimized appropriately by the quantizers. The authors have proposed a design method of the dynamic quantizers for SISO systems based on the communication rate constraint. In this paper, the design method is extended to MIMO systems. By this extention, we can handle the concentrated systems with communication rate constraint, because many concentrated systems have some controlled objectives to achieve multi-tasks. In the setting of the quantizer for MIMO system, bit assignment is important matter for appropriate design of information flow. The effectiveness of proposed design method is shown by numerical examples.
Keywords :
MIMO systems; control system synthesis; feedback; networked control systems; MIMO networked control systems; SISO system; bit assignment; communication rate constraint; data series quantization; dynamic filter; dynamic quantizer design; feedback type dynamic quantizer; information flow design; multiinput multioutput system; noise shaping; single-input single-output system; static quantizer; Frequency modulation;
Conference_Titel :
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-61284-969-0
DOI :
10.1109/IECON.2011.6119715