Title :
Implementation of a high performance multirate control system using PC
Author :
Liu, Jun ; Wong, Wai Ee ; Feng, LU ; Guo, Guoxiao
Author_Institution :
A*STAR Data Storage Inst., Singapore, Singapore
Abstract :
In this paper, a high performance control system using personal computer (PC) is presented. This system uses a multifunction I/O card for control output and a 2 GHz digitizer for sampling system output to generate the feedback signal. Upon receiving few hundred points of data from the digitizer, the PC performs a simplified discrete Fourier transform (SDFT) for feedback control purpose. A proportional plus integral plus derivative (PID) feedback controller is implemented to control a commercial Spinstand, which has an add-on servo with a custom-made actuator. We tested the system under different operating systems, and achieved a feedback control sampling frequency of 10 kHz under the Linux operating system. The high performance and scalability of this system make it suitable for fast deployment of real time control applications that sample system variables of hundred mega Hertz and output control signal at about 10 kHz.
Keywords :
Unix; control engineering computing; control systems; discrete Fourier transforms; microcomputer applications; real-time systems; servomechanisms; three-term control; 10 kHz; 2 GHz; Linux operating system; PID feedback controller; add-on servo; commercial Spinstand; custom-made actuator; discrete Fourier transform; multirate control system; personal computer; Adaptive control; Control systems; Discrete Fourier transforms; Feedback control; Microcomputers; Operating systems; Output feedback; Sampling methods; Signal generators; Three-term control;
Conference_Titel :
Power Electronics and Drive Systems, 2003. PEDS 2003. The Fifth International Conference on
Print_ISBN :
0-7803-7885-7
DOI :
10.1109/PEDS.2003.1283191
