Model referenced adaptive control to compensate slip-stick transition during clutch engagement |
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Authors: | L Chen G Xi C L Yin |
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Institution: | 1.National Key Lab of Automotive Electronics and Control,Shanghai Jiao Tong University,Shanghai,China;2.United Automotive Electronics System Co.,Shanghai,China |
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Abstract: | Clutches are widely used in various vehicle powertrains. The engagement process of a friction clutch has three phases, i.e.,
open, slipping, and sticking. Transitions between different phases introduce a discontinuity to the powertrain dynamics, which
has been neglected in previous research. A model referenced adaptive controller (MRAC), based on Popov hyper-stability criterion,
is designed to compensate the discontinuity. MRAC adjusts the frictional torque along with the errors of the state variables
compared with those of a referenced model. The designed MRAC is applied to a clutch in a bus. Simulation and experimental
results under fast and slow startup cases show that MRAC can simultaneously reduce vehicle jerk and frictional dissipation
when compared with the conventional controller. |
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Keywords: | |
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