TY - GEN
T1 - Digital servo control based on adaptive zero phase error tracking controller & zero phase prefilter
AU - Liu, Xiaodong
AU - Wu, Yunjie
AU - Liu, Youmin
PY - 2010
Y1 - 2010
N2 - This paper describes an adaptive scheme based on zero phase error tracking controller (ZPETC) and zero phase prefilter (ZPF) in a digital tracking servo system. The overall system with ZPETC has the following frequency characteristics: the phase is zero for all frequencies; the gain is unity at only zero frequency and about unity for low frequencies. To improve the bandwidth of servo tracking system, then introduce a ZPF ahead of the ZPETC which realizes that: keep zero phase for all frequencies; improve gain characteristics of system. Because the parameters of closed loop system are unknown or varying, the ZPETC and ZPF are implemented in an adaptive control scheme. Simulations result on a dc servo motor with different controllers indicate that, the present adaptive ZPETC and ZPF achieve the best tracking performance where the desired output to be tracked is unknown and the parameters of plant change.
AB - This paper describes an adaptive scheme based on zero phase error tracking controller (ZPETC) and zero phase prefilter (ZPF) in a digital tracking servo system. The overall system with ZPETC has the following frequency characteristics: the phase is zero for all frequencies; the gain is unity at only zero frequency and about unity for low frequencies. To improve the bandwidth of servo tracking system, then introduce a ZPF ahead of the ZPETC which realizes that: keep zero phase for all frequencies; improve gain characteristics of system. Because the parameters of closed loop system are unknown or varying, the ZPETC and ZPF are implemented in an adaptive control scheme. Simulations result on a dc servo motor with different controllers indicate that, the present adaptive ZPETC and ZPF achieve the best tracking performance where the desired output to be tracked is unknown and the parameters of plant change.
KW - Adaptive control
KW - Digital control
KW - Servo tracking control
KW - Zero phase prefilter
KW - Zero phase tracking controller
UR - https://www.scopus.com/pages/publications/77955453874
U2 - 10.1109/CCDC.2010.5498542
DO - 10.1109/CCDC.2010.5498542
M3 - 会议稿件
AN - SCOPUS:77955453874
SN - 9781424451821
T3 - 2010 Chinese Control and Decision Conference, CCDC 2010
SP - 3492
EP - 3497
BT - 2010 Chinese Control and Decision Conference, CCDC 2010
T2 - 2010 Chinese Control and Decision Conference, CCDC 2010
Y2 - 26 May 2010 through 28 May 2010
ER -