TY - GEN
T1 - Digital discrete method for oversampling
AU - Bi, Yan Chao
AU - Yao, Xiao Xian
AU - Song, Xiao Dong
PY - 2013
Y1 - 2013
N2 - Traditional discrete method, converting order continuous system to order difference equation, describes system using the information of sampling points. But the system response in the time of will not be sufficient to describe the system when sampling period is much larger than the bandwidth of the system. By analyzing differential discrete method, our design gives an improvement to take out of the influence of the system bandwidth. In this method, order continuous system is transformed into order difference equation and the information of sampling points can be used to describe the system. It is proved that modified difference transformation is better in interference rejection than traditional difference transformation by comparing the simulation between the two transformations. The hardware implementation using TI's TMS320F2808 shows that modified difference transformation has a deviation close to round-off error based on simulation with a linear increase of operating time.
AB - Traditional discrete method, converting order continuous system to order difference equation, describes system using the information of sampling points. But the system response in the time of will not be sufficient to describe the system when sampling period is much larger than the bandwidth of the system. By analyzing differential discrete method, our design gives an improvement to take out of the influence of the system bandwidth. In this method, order continuous system is transformed into order difference equation and the information of sampling points can be used to describe the system. It is proved that modified difference transformation is better in interference rejection than traditional difference transformation by comparing the simulation between the two transformations. The hardware implementation using TI's TMS320F2808 shows that modified difference transformation has a deviation close to round-off error based on simulation with a linear increase of operating time.
KW - Discrete system
KW - Mode increased-order
KW - Transform function discrete
UR - https://www.scopus.com/pages/publications/84884779804
U2 - 10.4028/www.scientific.net/AMM.389.901
DO - 10.4028/www.scientific.net/AMM.389.901
M3 - Conference contribution
AN - SCOPUS:84884779804
SN - 9783037858158
T3 - Applied Mechanics and Materials
SP - 901
EP - 907
BT - Materials Technologies, Automation Systems and Information Technologies in Industry
T2 - 2013 International Conference on Mechatronic Systems and Materials Application, ICMSMA 2013
Y2 - 26 June 2013 through 27 June 2013
ER -