TY - JOUR
T1 - FPGA-based elman neural network control system for linear ultrasonic motor
AU - Lin, Faa Jeng
AU - Hung, Ying Chih
N1 - Funding Information:
Manuscript received May 29, 2008; accepted august 15, 2008. The author would like to acknowledge the financial support of the national science council of Taiwan, roc, through its grant nsc 95-2221-E-008-177-My3.
PY - 2009/1
Y1 - 2009/1
N2 - A field-programmable gate array (FPGA)-based Elman neural network (ENN) control system is proposed to control the mover position of a linear ultrasonic motor (LUSM) in this study. First, the structure and operating principle of the LUSM are introduced. Because the dynamic characteristics and motor parameters of the LUSM are nonlinear and time-varying, an ENN control system is designed to achieve precision position control. The network structure and online learning algorithm using delta adaptation law of the ENN are described in detail. Then, a piecewise continuous function is adopted to replace the sigmoid function in the hidden layer of the ENN to facilitate hardware implementation. In addition, an FPGA chip is adopted to implement the developed control algorithm for possible low-cost and high-performance industrial applications. The effectiveness of the proposed control scheme is verified by some experimental results.
AB - A field-programmable gate array (FPGA)-based Elman neural network (ENN) control system is proposed to control the mover position of a linear ultrasonic motor (LUSM) in this study. First, the structure and operating principle of the LUSM are introduced. Because the dynamic characteristics and motor parameters of the LUSM are nonlinear and time-varying, an ENN control system is designed to achieve precision position control. The network structure and online learning algorithm using delta adaptation law of the ENN are described in detail. Then, a piecewise continuous function is adopted to replace the sigmoid function in the hidden layer of the ENN to facilitate hardware implementation. In addition, an FPGA chip is adopted to implement the developed control algorithm for possible low-cost and high-performance industrial applications. The effectiveness of the proposed control scheme is verified by some experimental results.
UR - http://www.scopus.com/inward/record.url?scp=60349093762&partnerID=8YFLogxK
U2 - 10.1109/TUFFC.2009.1009
DO - 10.1109/TUFFC.2009.1009
M3 - 期刊論文
C2 - 19213636
AN - SCOPUS:60349093762
SN - 0885-3010
VL - 56
SP - 101
EP - 113
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 1
M1 - 4775268
ER -