DocumentCode :
2252275
Title :
A two-loop linear control utilizing ΔΣ modulator
Author :
Al-Makhles, Dhafer ; Patel, Naresh ; Swain, Akshya
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Auckland, Auckland, New Zealand
fYear :
2013
fDate :
10-11 Sept. 2013
Firstpage :
1
Lastpage :
6
Abstract :
The traditional approach of controller implementation is based on multi-bit signal processing. The present paper proposes an alternate approach of controller implementation based on single-bit signal processing. This requires less interface channels between the controller and other parts of the system and thereby consumes significantly less hardware resources compared to traditional multi-bit processing. The effectiveness of the proposed single-bit or bit-stream controller is experimentally illustrated by designing two single-bit PID controllers for controlling the position of a D.C. Motor. The outer loop PID controller is designed to provide appropriate reference for the inner speed control loop, which is controlled by an inner loop PID controller. Various functional blocks are designed to implement Proportional, Integral and Derivative action in single-bit environment. Experimental results from a laboratory prototype illustrate that the single-bit based PID controllers effectively controls the position and consumes approximately 500 logic elements (LE) on an Altera Cyclone FPGA.
Keywords :
DC motors; control system synthesis; machine control; position control; sigma-delta modulation; signal processing; three-term control; ΔΣ modulator; Altera Cyclone FPGA; D.C. motor; bit-stream controller; controller implementation; derivative action; functional block design; hardware resources; inner loop PID controller; inner speed control loop; integral action; interface channels; logic elements; multibit signal processing; outer loop PID controller design; position control; proportional action; single-bit PID controller designing; single-bit based PID controllers; single-bit controller; single-bit signal processing; two-loop linear control; DC motors; Frequency control; Hardware; Modulation; Noise; Transfer functions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Intelligent Solutions in Embedded Systems (WISES), 2013 Proceedings of the 11th Workshop on
Conference_Location :
Pilsen
Type :
conf
Filename :
6664953
Link To Document :
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