TY - GEN
T1 - Multi-loop Damping and Tracking Strategy Emulating a Butterworth Pattern for Accurate Nanopositioning (Best Paper Award Winner)
AU - Altaher, Mohammed
AU - Aphale, Sumeet S.
PY - 2017/8/26
Y1 - 2017/8/26
N2 - Control schemes for nanopositioners typically combine damping and tracking. Due to the positioning performance requirements of the nanopositioning system, it is desirable for the closed-loop frequency response of the nanopositioner to mimic ripple-free pass-band low-pass characteristics. Earlier reports are available on simultaneous damping and tracking control emulating a Butterworth filter design, but this technique only incorporates a single integrator for tracking, which is inadequate for error-free tracking of the triangular and ramp-like signals typically used as input to nanopositioning systems. Double integral tracking guarantees error-free tracking, but is difficult to implement due to phase-related stability issues. In this work, a dual-loop integral tracking algorithm is proposed. Using simulation, it is shown that in the presence of hysteresis, the proposed dual-loop scheme delivers a more accurate positioning performance than the traditional single-loop integral tracking strategy.
AB - Control schemes for nanopositioners typically combine damping and tracking. Due to the positioning performance requirements of the nanopositioning system, it is desirable for the closed-loop frequency response of the nanopositioner to mimic ripple-free pass-band low-pass characteristics. Earlier reports are available on simultaneous damping and tracking control emulating a Butterworth filter design, but this technique only incorporates a single integrator for tracking, which is inadequate for error-free tracking of the triangular and ramp-like signals typically used as input to nanopositioning systems. Double integral tracking guarantees error-free tracking, but is difficult to implement due to phase-related stability issues. In this work, a dual-loop integral tracking algorithm is proposed. Using simulation, it is shown that in the presence of hysteresis, the proposed dual-loop scheme delivers a more accurate positioning performance than the traditional single-loop integral tracking strategy.
KW - Butterworth pattern
KW - Nanopositioner
KW - Damping
KW - Tracking
U2 - 10.1007/978-981-10-6463-0_2
DO - 10.1007/978-981-10-6463-0_2
M3 - Published conference contribution
SN - 9789811064623
VL - 751
T3 - Communications in Computer and Information Science (CCIS)
SP - 12
EP - 26
BT - Modeling, Design and Simulation of Systems.
A2 - Ali, Mohamed Sultan Mohamed
A2 - Wahid, Herman
A2 - Subha, Nurul Adilla Mohd
A2 - Sahlan, Shafishuhaza
A2 - Yunus, Mohd Amri Md.
A2 - Wahap, Ahmad Ridhwan
PB - Springer
CY - Springer, Singapore
T2 - 17th Asia Simulation Conference
Y2 - 27 August 2017 through 29 August 2017
ER -