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Sensorless load torque estimation and passivity based control of buck converter fed DC motor.


ABSTRACT: Passivity based control of DC motor in sensorless configuration is proposed in this paper. Exact tracking error dynamics passive output feedback control is used for stabilizing the speed of Buck converter fed DC motor under various load torques such as constant type, fan type, propeller type, and unknown load torques. Under load conditions, sensorless online algebraic approach is proposed, and it is compared with sensorless reduced order observer approach. The former produces better response in estimating the load torque. Sensitivity analysis is also performed to select the appropriate control variables. Simulation and experimental results fully confirm the superiority of the proposed approach suggested in this paper.

SUBMITTER: Kumar SG 

PROVIDER: S-EPMC4393902 | biostudies-other | 2015

REPOSITORIES: biostudies-other

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