Current measuring method in an operating method for a three-phase electromechanical drive of a steering aid , said drive with three phases (U, V, W) and being operated with pulse-width modulation by means of a modulation pattern, characterized in that - currents (I U , I V , I W ) for the three phases (U, V, W) are recorded simultaneously at specific evaluation times, - wherein, if a predefined condition for active current measurement is present at an evaluation time, - the modulation pattern of one of the phases (U, V, W) is modified by compression such that, at the evaluation time, a sufficient measuring period for performing multiple current measurements is produced between a falling edge of the phase (U, V, W) that has the longest modulation pattern among the phases (U, V, W) in the current cycle and a rising edge of the phase (U, V, W) that has the longest modulation pattern among the phases (U, V, W) in the following cycle, if control voltages for the modulation patterns and pulse widths of the modulation patterns for the three phases (U, V, W) are above predetermined maximum limits of a proportion of a maximum duty cycle and of a maximum pulse width, respectively, and - a current measurement for the three phases (U, V, W) is carried out simultaneously in the measuring period at the evaluation time, and - wherein the presence of the predefined condition for active current measurement is detected - if, within a first specific period since a last current measurement, a measurement of the currents (I U , I V , I W ) for all three phases (U, V, W) has not been carried out or has not been able to be carried out, or - if, within a second specific period since a last current measurement, a measurement of the currents (I U , I V , I W ) for two of the three phases (U, V, W) has not been carried out or has not been able to be carried out, - wherein the first specific period is longer than the second specific period. - currents (I U , I V , I W ) for the three phases (U, V, W) are recorded simultaneously at specific evaluation times, - wherein, if a predefined condition for active current measurement is present at an evaluation time, - the modulation pattern of one of the phases (U, V, W) is modified by compression such that, at the evaluation time, a sufficient measuring period for performing multiple current measurements is produced between a falling edge of the phase (U, V, W) that has the longest modulation pattern among the phases (U, V, W) in the current cycle and a rising edge of the phase (U, V, W) that has the longest modulation pattern among the phases (U, V, W) in the following cycle, if control voltages for the modulation patterns and pulse widths of the modulation patterns for the three phases (U, V, W) are above predetermined maximum limits of a proportion of a maximum duty cycle and of a maximum pulse width, respectively, and - a current measurement for the three phases (U, V, W) is carried out simultaneously in the measuring period at the evaluation time, and - wherein the presence of the predefined condition for active current measurement is detected - if, within a first specific period since a last current measurement, a measurement of the currents (I U , I V , I W ) for all three phases (U, V, W) has not been carried out or has not been able to be carried out, or - if, within a second specific period since a last current measurement, a measurement of the currents (I U , I V , I W ) for two of the three phases (U, V, W) has not been carried out or has not been able to be carried out, - wherein the first specific period is longer than the second specific period. <EOS>