Browsing EECS Faculty Scholarship by Author "Watkins, John Michael"
Now showing items 1-11 of 11
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Adaptive flight-control design using neural-network-aided optimal nonlinear dynamic inversion
Lakshmikanth, Geethalakshmi S.; Padhi, Radhakant; Watkins, John Michael; Steck, James E. (American Institute of Aeronautics and Astronautics, 2014-11)A neural-network-aided nonlinear dynamic inversion-based hybrid technique of model reference adaptive control flight-control system design is presented in this paper. Here, the gains of the nonlinear dynamic inversion-based ... -
Approximate controller design for singularly perturbed aircraft systems
Graziosi, Joseph E.; Sawan, M. Edwin; Watkins, John Michael (IEEE, 2014-08-03)The purpose of this paper is to extend the Quasi-Steady State Approximation and Matrix Block Diagonalization methods utilized in the Approximate Controller Design for Singularly Perturbed Aircraft Systems [1]. In that ... -
Comparative study of task allocation strategies in multirobot systems
Hatime, Hicham; Pendse, Ravi; Watkins, John Michael (IEEE-INST Electrical Electronics Engineers Inc, 2013-01)In this paper, we present a comparative study of three distributed strategies for task allocation in a multirobot system. The objective is to determine the course of action for each robot and the targets it needs to service. ... -
Determination of all robustly stabilizing fractional-order PID controllers
Lee, Yung K.; Watkins, John Michael (American Society of Mechanical Engineers, 2013)In this paper, a method is provided for determining all fractional-order (FO) proportional–integral-derivative (PID) controllers that robustly stabilize a single-input and single-output (SISO) transfer function of arbitrary ... -
Determination of all stabilizing fractional-order PID controllers that satisfy a robust performance constraint
Lee, Yung K.; Watkins, John Michael (IEEE, 2013-06)This paper presents a method for finding all stabilizing fractional-order (FO) proportional-integral-derivative (PID) controllers that satisfy a robust performance constraint for a system of integer or non-integer order ... -
Determination of all stabilizing fractional-order PID controllers that satisfy a weighted sensitivity constraint
Lee, Yung K.; Watkins, John Michael (IEEE, 2012)This paper presents a method for determining all stabilizing fractional-order (FO) proportional-integral-derivative (PID) controllers that satisfy an H∞ weighted-sensitivity constraint for a system of integer or non-integer ... -
Determination of all stabilizing PID controllers for time delay systems with Smith predictors
Veeramachaneni, Siva Rama Krishna; Watkins, John Michael; Emami, Tooran (American Society of Mechanical Engineers, 2013)Time delays in the control loop complicate the analysis and design of controllers. The use of a Smith predictor is a well-known technique for dealing with delays in stable systems. This paper presents a method for finding ... -
OCTOPUS: an on-demand communication topology updating strategy for mobile sensor networks
Hatime, Hicham; Namuduri, Kameswara; Watkins, John Michael (IEEE, 2011-04)Mobile sensor networks are characterized by dynamic changes in communication links and network topology caused mainly due to node mobility. In such networks, it is a challenge to build a communication system that lasts ... -
Robust performance design of PID controllers for time-delay systems with a Smith Predictor
Veeramachaneni, Siva Rama Krishna; Watkins, John Michael (IEEE, 2014-06-04)Time delays in the feedback loop complicate the analysis and design of the closed-loop system. The use of a Smith predictor in combination with a Proportional Integral Derivative (PID) controller is a well-known technique ... -
Robust performance design of PID controllers with inverse multiplicative uncertainty
Emami, Tooran; Watkins, John Michael (IEEE, 2011-06-29)In this paper a graphical method is introduced for finding all proportional integral derivative (PID) controllers that satisfy a robust performance constraint for a given single input-single-output (SISO) linear time ... -
Single Network Adaptive Critic aided nonlinear dynamic inversion for suboptimal command tracking
Lakshmikanth, Geethalakshmi S.; Padhi, Radhakant; Watkins, John Michael; Steck, James E. (IEEE, 2011-09-28)Using the Approximate Dynamic Programming (ADP) approach, nonlinear optimal control problems can be solved by using a dual neural network architecture called the Adaptive Critic (AC). A Single Network Adaptive Critic (SNAC) ...