Title :
Microcomputer-controlled torque calculator in DC drives
Author :
De Meester, Jan ; Reekmans, Roland ; Vandenput, Andre J A ; Belmans, Ronnie J M ; Geysen, Willy J D
Author_Institution :
Dept. of Electr. Eng., Katholieke Univ. Leuven, Belgium
Abstract :
The indirect method for torque measurement in DC drives is presented. The microcomputer-controlled device calculates the torque from a voltage, a current, and a speed signal, using some preliminary stored values of parameters and characteristics. To avoid the temperature dependency of the resistance, the electromotive force (instead of the terminal voltage) is indirectly measured using a so-called electromagnetic force bridge. Experimental results prove the accuracy and the convenience of this method. It is concluded that the greatest merit of the indirect method consists in the fact that no mechanical impact on the installation is necessary.<>
Keywords :
DC motors; computerised instrumentation; electric drives; microcomputer applications; torque measurement; DC drives; accuracy; computerised instrumentation; current; electromotive force; speed; torque measurement; voltage; Bridge circuits; DC machines; Electrical resistance measurement; Electromagnetic forces; Electromagnetic measurements; Force measurement; Strain measurement; Temperature dependence; Torque measurement; Voltage measurement;
Journal_Title :
Industry Applications, IEEE Transactions on
