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Nonlinear predictive control with application to manipulator with flexible forearm

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2 Author(s)
Song, B.J. ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Koivo, Antti J.

A neural network is constructed to represent the input-output relation of a dynamical model. The parameters are calculated by means of a second-order training algorithm. Then, a nonlinear predictive controller is designed on the basis of a neural network plant model using the receding-horizon control approach. Based on the neural model, the control is calculated by minimizing a projected cost function that penalizes future tracking errors. As an illustration of the approach, the nonlinear dynamics of a planar two-joint arm with a flexible forearm are modeled using a sigmoidal network and an offline estimation procedure for a range of motions. The applicability of the approach is illustrated through computer simulations

Published in:

Industrial Electronics, IEEE Transactions on  (Volume:46 ,  Issue: 5 )