TY - JOUR
T1 - Saturated Prescribed Space-Time Adaptive Sliding Mode Control With its Implementation on Piezo-Actuated Fast Steering Mirror
AU - Liu, Chao
AU - Liu, Weixiang
AU - Ma, Haifeng
AU - Xiong, Zhenhua
AU - Li, Yangmin
N1 - Funding information:
This work was supported in part by the Natural Science Foundation of China under Grant 52375450; in part by the Natural Science Foundation of Shandong Province under Grant ZR2022ZD06; and in part by the Shandong Provincial Key Research and Development Program (Major Scientific and Technological
Innovation Project) under Grant 2020CXGC010204.
Publisher Copyright:
© 2004-2012 IEEE.
PY - 2024/3/1
Y1 - 2024/3/1
N2 - This brief presents the design and testing of a novel saturated prescribed space-time adaptive sliding mode control (SPSASMC) strategy dedicated to the disturbed system with input saturation. In comparison with traditional adaptive sliding mode controllers, the reported scheme guarantees the prescribed space-time convergence. Namely, the sliding variable is ensured to converge to a prescribed space within a prescribed time. Moreover, the convergence accuracy and time are capable of being picked in advance, which are not affected by initial condition, lumped disturbance, and input saturation. Besides, the SPSASMC scheme can automatically adjust the control gain according to the lumped disturbance, alleviating overestimation problem. Meanwhile, the reported scheme also avoids the segmentation of the control scheme. The stability is verified in theory, and the performance improvement is validated by simulations and experimental studies in a piezo-actuated fast steering mirror.
AB - This brief presents the design and testing of a novel saturated prescribed space-time adaptive sliding mode control (SPSASMC) strategy dedicated to the disturbed system with input saturation. In comparison with traditional adaptive sliding mode controllers, the reported scheme guarantees the prescribed space-time convergence. Namely, the sliding variable is ensured to converge to a prescribed space within a prescribed time. Moreover, the convergence accuracy and time are capable of being picked in advance, which are not affected by initial condition, lumped disturbance, and input saturation. Besides, the SPSASMC scheme can automatically adjust the control gain according to the lumped disturbance, alleviating overestimation problem. Meanwhile, the reported scheme also avoids the segmentation of the control scheme. The stability is verified in theory, and the performance improvement is validated by simulations and experimental studies in a piezo-actuated fast steering mirror.
KW - adaptive control
KW - input saturation
KW - Prescribed space-time
KW - sliding mode control
UR - http://www.scopus.com/inward/record.url?scp=85174847147&partnerID=8YFLogxK
U2 - 10.1109/TCSII.2023.3326270
DO - 10.1109/TCSII.2023.3326270
M3 - Journal article
AN - SCOPUS:85174847147
SN - 1549-7747
VL - 71
SP - 1346
EP - 1350
JO - IEEE Transactions on Circuits and Systems II: Express Briefs
JF - IEEE Transactions on Circuits and Systems II: Express Briefs
IS - 3
ER -