TY - GEN
T1 - Adaptive output-feedback control of planar hybrid step motors using position-only feedback
AU - Krishnamurthy, P.
AU - Khorrami, F.
PY - 2011
Y1 - 2011
N2 - In this paper, the design of a nonlinear robust adaptive dynamic output-feedback controller for voltage-fed dual-axis linear stepper (Sawyer) motors is addressed using a detailed motor model with electrical dynamics and significant uncertainties and disturbances. The proposed controller utilizes only position measurements in each axis, and achieves practical stabilization of position tracking errors. Velocity and current measurements are not required for feedback. Furthermore, the only electromechanical motor parameter that is required to be known is the time constant of the electrical subsystem. Adaptations are utilized to remove requirement of knowledge of any other electromechanical system parameters. The controller is robust to load torques, friction, cogging forces, and other disturbances satisfying certain bounds. The controller also corrects for the yaw rotation to achieve synchrony of motor and rotor teeth.
AB - In this paper, the design of a nonlinear robust adaptive dynamic output-feedback controller for voltage-fed dual-axis linear stepper (Sawyer) motors is addressed using a detailed motor model with electrical dynamics and significant uncertainties and disturbances. The proposed controller utilizes only position measurements in each axis, and achieves practical stabilization of position tracking errors. Velocity and current measurements are not required for feedback. Furthermore, the only electromechanical motor parameter that is required to be known is the time constant of the electrical subsystem. Adaptations are utilized to remove requirement of knowledge of any other electromechanical system parameters. The controller is robust to load torques, friction, cogging forces, and other disturbances satisfying certain bounds. The controller also corrects for the yaw rotation to achieve synchrony of motor and rotor teeth.
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U2 - 10.1109/ICCA.2011.6138060
DO - 10.1109/ICCA.2011.6138060
M3 - Conference contribution
AN - SCOPUS:84858977578
SN - 9781457714757
T3 - IEEE International Conference on Control and Automation, ICCA
SP - 567
EP - 572
BT - 2011 9th IEEE International Conference on Control and Automation, ICCA 2011
T2 - 9th IEEE International Conference on Control and Automation, ICCA 2011
Y2 - 19 December 2011 through 21 December 2011
ER -