Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Adaptive Control (1)
- Adaptive Critic-Based Neural Network Controller (1)
- Closed Loop Systems (1)
- Closed-Loop Tracking Error (1)
- Control Nonlinearities (1)
-
- Control System Synthesis (1)
- Deadzone Compensation Scheme (1)
- Deadzone Nonlinearity (1)
- Discrete Time Systems (1)
- Dynamics Approximation (1)
- Learning (Artificial Intelligence) (1)
- Lyapunov Approach (1)
- Multilayer Neural Network Controller (1)
- Multilayer Perceptrons (1)
- Neurocontrollers (1)
- Nonlinear Control Systems (1)
- Reinforcement Learning Scheme (1)
- Tracking Performance (1)
- Uncertain Nonlinear Systems (1)
- Uncertain Systems (1)
- Uniform Ultimately Boundedness (1)
- Unknown Deadzones (1)
- Weight Estimates (1)
Articles 1 - 2 of 2
Full-Text Articles in Aerospace Engineering
Adaptive Critic-Based Neural Network Controller For Uncertain Nonlinear Systems With Unknown Deadzones, Pingan He, Jagannathan Sarangapani, S. N. Balakrishnan
Adaptive Critic-Based Neural Network Controller For Uncertain Nonlinear Systems With Unknown Deadzones, Pingan He, Jagannathan Sarangapani, S. N. Balakrishnan
Electrical and Computer Engineering Faculty Research & Creative Works
A multilayer neural network (NN) controller in discrete-time is designed to deliver a desired tracking performance for a class of nonlinear systems with input deadzones. This multilayer NN controller has an adaptive critic NN architecture with two NNs for compensating the deadzone nonlinearity and a third NN for approximating the dynamics of the nonlinear system. A reinforcement learning scheme in discrete-time is proposed for the adaptive critic NN deadzone compensator, where the learning is performed based on a certain performance measure, which is supplied from a critic. The adaptive generating NN rejects the errors induced by the deadzone whereas a …
Effect Of Polymer-Surface Mobility On Adhesion In Poly(Methyl Methacrylate)-Tape System, Bhavesh C. Gandhi, Frank D. Blum, Lokeswarappa R. Dharani
Effect Of Polymer-Surface Mobility On Adhesion In Poly(Methyl Methacrylate)-Tape System, Bhavesh C. Gandhi, Frank D. Blum, Lokeswarappa R. Dharani
Chemistry Faculty Research & Creative Works
The interaction between two polymer layers, especially adhesion between them, plays an important role in polymer processing and other applications. Detailed knowledge of the molecular structure and dynamics of polymer interfaces, and how they relate to macroscopic mechanical properties, should help designers construct more functional systems. Unfortunately, there have been few studies where both molecular and macroscopic studies have been performed on similar systems. In previous studies from our group, we have probed the dynamics of poly(methyl acrylate) (PMA) and thermal behavior of poly(methyl methacrylate) (PMMA) on silica. These studies helped us paint a picture for strongly bound molecules on …