fig1 a shows the initialization of the method according to the present invention with reference to a circuit diagram that is based on a rotor having a north and a south pole . the main magnetization direction , thus the field lines of the magnetic field produced by an excitation coil , extends along the axis characterized by d . the q - axis extends orthogonally thereto and corresponds to the transversal axis which is orthogonal to longitudinal axis d , the q - axis extending orthogonally to the field lines of the excitation magnetic field . initially , the angular directions that are each offset by 60 ° from one another are scanned in accordance with the active scanning method , i . e ., in that a voltage pulse is emitted in each of directions φ 1 , φ 2 and φ 3 . in other words , three different voltage pulses are transmitted to the stator , which , as a result , generates three different magnetic fields in directions φ 1 , φ 2 and φ 3 . the corresponding current characteristics are recorded . in fig1 b , u ( φ 1 ) indicates the voltage pulse that was transmitted to the rotor at a first point in time ; u ( φ 2 ) indicates a second voltage pulse that was transmitted to the rotor ; and u ( φ 3 ) a voltage pulse that was transmitted to the rotor following the two first voltage pulses . it is preferably always only one voltage pulse that is transmitted to the stator , there preferably being one minimum time duration between two voltage pulses . voltage pulses , which belong to different angular directions , preferably do not overlap one another , but are rather spaced apart from one another by a minimum time interval . the currents generated by the voltage pulses are shown as dashed lines . it is discernible that the current rises in such a way that it is offset from the voltage and decreases only following the falling edge of the voltage . the particular inductance in this direction may be inferred from the phase displacement between the current and voltage . the maximum of the current characteristic is recorded as an absolute value , i . e ., absolute value of i ( φ 1 ), absolute value of i ( φ 2 ), absolute value of i ( φ 3 ). it is discernible that the greatest peak value of the generated current pulse is at φ 1 , the next lower is at φ 2 , and the lowest current pulse is at φ 3 . in accordance with the present invention , the peak values are compared to one another , and the two greatest peak values , respectively the angular directions thereof , are transmitted to the next iteration stage . from the n diagram shown in fig1 b , it follows that the actual angular direction of the rotor is closer to φ 1 than to φ 2 ( the peak value of φ 2 is lower than the peak value of φ 1 ), the lowest peak value having been recorded in direction φ 3 . it may be inferred herefrom that the greatest distance to the angular direction to actually be recorded is in direction φ 3 . in addition , it may be inferred that the absolute maximum of all peak values is between φ 1 and φ 2 . the procedure illustrated in fig1 a and 1 b still encompasses a 180 ° ambiguity that may be resolved prior to or following the initialization process or following the iterative process . in addition , the initialization process illustrated in fig1 a and 1 b may be combined with the resolution of the 180 ° ambiguity in that a fourth angular direction is examined that opposes φ 1 . thus , a half - space of 180 ° is completely covered , and , for example , by comparing φ 1 to the angular direction that opposes φ 1 , the north - south orientation of the rotor may be ascertained . thus , the acquisition in direction φ 1 is used twice : on the one hand , for initialization ( i . e ., to ascertain a basic orientation of the rotor ), and , on the other hand , for resolution of the 180 ° ambiguity , in that a measurement in direction φ 1 and a measurement in direction 180 ° minus φi are performed . the sequence of the method for acquiring angles in accordance with the present invention is illustrated in fig2 a - 2 c . q and d denote the main axes of the rotor . first , two angular directions are defined , 10 and 12 . the angle diagram illustrated in fig2 a corresponds to that illustrated in fig1 a , so that the step illustrated in fig2 a corresponds to the step that follows the initialization step . thus , directions 10 and 12 correspond to φ 1 , respectively , φ 2 . the reason why angular directions φ 1 and φ 2 were taken from the initialization step illustrated in fig1 is apparent in fig2 b : the peak values of φ 1 and φ 2 were the two greatest values of all measured peak values . it is discernible from fig1 a that the sought angular direction of the main axis of the rotor , that is identified by d , is close to φ 1 . for that reason , in accordance with fig1 b , the greatest peak value i ( φ 1 ) was obtained at φ 1 . fig2 a illustrates that an angular direction disposed between 10 and 12 (= φ 1 and φ 2 ) is selected , in this case , by averaging . new angular direction 14 corresponds to an intermediate angle direction that is obtained , for example , by arithmetic averaging of directions 10 and 12 . the subsequent iteration step is shown in fig2 b ; accordingly , the two angular directions of the two greatest peak values , 14 and 10 , are taken from the preceding step . this corresponds to the step of providing for at least two peak values . the measurement along direction 16 serves to complete the iteration step and renders possible a comparison of the two sectors that reside between 14 and 16 , respectively 16 and 10 . the ascertainment of the two angular directions , in which the two greatest peak values are selected from a peak value group , may be provided as the beginning of the subsequent iteration stage , the peak value group including the peak values of angular directions 10 , 16 and 14 . subsequently thereto , however , still within the next iteration stage , an intermediate angle is ascertained in fig2 c between angular positions 10 and 16 , angular directions 10 and 16 having already been determined in a preceding step of the same iteration stage as the two angular directions having the greatest peak values . angular direction 18 , which is disposed precisely in the middle between angular direction 10 and 16 , is provided as the angular direction between angular direction 10 and angular direction 16 . the mean between two angles is provided , for example , by arithmetic averaging . from fig2 a - 2 c , it is discernible that , in each case , the newly added angular directions , i . e ., 14 , then 16 , and then 18 , increasingly approach the actual angular direction of the main axis of the rotor . angular direction 18 may either be output or is used as a basis for a further iteration stage , together with angular direction 16 , since , in addition to angular direction 18 , it has the greater peak value . the comparison steps may be simplified in that , not the two greatest , but rather the smallest peak value and the angular direction thereof are ascertained . the smallest peak value and the angular direction thereof are then separated out . in the case of permanently excited electric motors , either the two smallest peak values and the angular direction thereof are ascertained and transmitted in the same manner , or the greatest peak value is ascertained , respectively , the angular direction thereof is then separated out . this method is particularly suited when altogether three angular directions are analyzed in each iteration stage , one of which is separated out , and the remaining two are transmitted to the next iteration stage . when fig2 b is understood to be ( m ) iteration stage , and fig2 c is understood to be ( n ) iteration stage , then ( m ) angular direction corresponds to direction 16 , since a magnetic field is applied therein . the corresponding ( m ) peak value corresponds to the corresponding ( m ) voltage pulse . angular directions 10 and 14 may be considered as ( m + i ) peak values and the corresponding ( m + i ) angular directions , since they are merely provided , i . e ., they are carried over from a previous iteration stage or a previous starting iteration stage , for example . the subsequent ( n ) iteration stage is shown in fig2 c , the ( n + 1 ) angular direction and the ( n + 2 ) angular direction being represented by 10 and 16 since they are already provided . intermediate angle 18 , which is generated in the ( n ) iteration stage as a new iteration value , is provided as ( n ) angular direction . fig3 illustrates the dependence of the inductance on angle φ . this is not necessarily sinusoidal , but depends , in particular , on the geometry and the material property of the rotor . first three initialization pulses 1 a , 1 b , 1 c at equally spaced intervals are emitted ; since they fan out broadly , the pulses already covering an angle of 120 °. in fig3 , initialization pulse 1 a is located at 30 °; initialization pulse 1 b at 90 °, and initialization pulse 1 c at 150 °. since the minimum is sought in fig3 , a single pulse sequence of pulses 2 a and 2 b is emitted . this is the consequence of a search for a minimum that revealed that the initialization pulses having directions 1 a and 1 c have the two lowest peak values . thus , the voltage pulse at 2 a corresponds to an angular position between 1 a and 1 c . subsequently thereto , a single pulse sequence is emitted at 3 a and 3 b , the further evaluation steps not being discussed in detail . 3 a and 3 b correspond to directions 30 ° and 15 °, whereas voltage pulses 2 a and 2 b were emitted in directions 0 ° and 30 °. it is discernible that angular directions 1 a , 2 b and 3 a are used further , for example , by retransmitting a pulse in this direction or by storing the corresponding peak value . finally , voltage pulses 4 a and 4 b are emitted in angular directions 15 ° and 195 °. these are used for the absolute angle orientation . an angle acquisition in accordance with the double pulse variant is represented in fig4 . angles p 1 and p 2 already reside near the sought minimum , making it difficult to correctly decide which two greatest or smallest peak values to select by comparing ( the now very similar ) peak values . the difference in inductance dp 1 between p 1 and p 2 is small , whereby a differentiation may be error - prone . therefore , for closer analysis of angular direction p 1 , a pulse pair is transmitted in directions p 1 a and p 1 b , p 1 a and p 1 b being +/− 45 ° distant from p 1 . p 1 a and p 1 b are used for closer analysis of point p 1 . to analyze point p 2 , measurements are taken at angular directions p 2 a and p 2 b , which are likewise +/− 45 ° distant from p 2 . the distance from +/− 45 ° ensures that there is a differentiation maximum at these locations , whereas a differentiation minimum is provided at starting points p 1 and p 2 . the differentiation maximum and differentiation minimum relate to the quality of the difference in the peak values . to now analyze points p 1 and p 2 , the difference in the peak values between p 1 a and p 1 b is generated to analyze direction p 1 , the difference with respect to the inductance is denoted as dp 3 . to analyze p 2 in the same manner , the difference in the peak values between p 2 a and p 2 b is analyzed , dp 2 indicating the difference with respect to the inductance . it is clearly discernible that difference dp 3 is able to vary greatly from difference dp 2 . thus , as the result of comparative differences , an enhanced differentiating feature is obtained , since the values are distinctly different , and the differentiation may be reliably provided even in the case of noisy signals . in comparison thereto , the actual difference in inductance between p 2 and p 1 is represented as dp 1 , this being able to be related graphically to differences dp 2 and dp 3 . it is readily discernible that difference dp 1 , which would result in the case of a single pulse measurement , leads to iterations that are considerably more difficult to differentiate , so that a slight noise may result in erroneous decisions . on the other hand , dp 3 and dp 2 are readily distinguishable , although starting points p 1 and p 2 reside in close mutual proximity . even when the end result is very noisy , dp 3 is readily distinguishable from dp 2 , so that , of these two values , the greater or smaller may be selected . on the other hand , between p 1 and p 2 themselves , it is not readily distinguishable which of the two points belongs to the lower inductance when typical measuring errors must be assumed . thus , the differential between the differences in induction , respectively the corresponding peak value differences dp 2 and dp 3 , is relatively great in comparison to the ability to distinguish between p 1 and p 2 , respectively the corresponding peak values . fig4 shows measurements for merely two angular directions , i . e ., for p 1 and p 2 . however , the method illustrated with reference to fig4 may also be carried out using one single angular direction , or using three or more angular directions , which are each acquired by a double pulse pair . voltage pulses are designated as a double pulse pair that are emitted in two different angular directions and , however , are spaced equally apart by the same angular direction to be actually recorded . the double pulse pair includes two voltage pulses that are executed one after another ; a protection interval preferably being provided between the two voltage pulses to facilitate recording of the corresponding current pulses . as already noted , voltage pulses are always emitted individually and preferably in such a way that they do not overlap . as seen in fig5 a , a device 500 for sensing angles of a synchronous motor 530 includes at least one current sensor 505 and a voltage pulse generator 510 . the device 500 also includes a control device 515 , connected to the voltage pulse generator 510 . the control device 515 also has an angle input 520 and distributes the voltage 555 generated by the voltage pulse generator 510 over outputs 525 . the outputs 525 are configured for connection of the synchronous motor 530 , in such a way that the synchronous motor 530 generates a field having a direction corresponding to an angle signal being applied to the angle input 520 , and wherein the at least one current sensor 505 is connected to the outputs 525 in order to record the currents flowing through the outputs 525 . the device 500 also includes a comparator device 535 configured to compare the current pulses generated by voltages pulses in the case of different angle signals , to detect two greatest or smallest of all current pulses and two corresponding angle signals , and to output the two corresponding angle signals 540 , 545 at an output of the comparator device , wherein the control device 515 communicates with the output of the comparator device 535 . the device 500 also includes an averaging device 550 configured to average angles represented by the two angle signals 540 , 545 , wherein the averaging device 550 is connected to the angle input 520 in order to emit an averaged angle to the angle input in order to control the control device 515 in accordance with the averaged angle . in embodiments , the device 500 also includes a starting device 560 storing at least one starting angle 565 , wherein the starting device 560 is connected to the angle input in order to transmit the starting angle 565 to the angle input 520 . as seen in fig5 b , a device 570 for sensing angles of a synchronous motor 530 includes at least one current sensor 505 and a voltage pulse generator 510 . the device 570 also includes a control device 515 , connected to the voltage pulse generator 510 . the control device 515 also has an angle input 520 and distributes the voltage 555 generated by the voltage pulse generator 510 over outputs 525 . the outputs 525 are configured for connection of the synchronous motor 530 , in such a way that the synchronous motor 530 generates a field having a direction corresponding to an angle signal being applied to the angle input 520 , and wherein the at least one current sensor 505 is connected to the outputs 525 in order to record the currents flowing through the outputs 525 . the device 570 also includes a comparator device 535 configured to compare the current pulses generated by voltages pulses in the case of different angle signals , to detect two greatest or smallest of all current pulses and two corresponding angle signals , and to output the two corresponding angle signals 540 , 545 at an output of the comparator device , wherein the control device 515 communicates with the output of the comparator device 535 . the device 570 also includes an averaging device 550 configured to average angles represented by the two angle signals 540 , 545 , wherein the averaging device 550 is connected to the angle input 520 in order to emit an averaged angle to the angle input in order to control the control device 515 in accordance with the averaged angle . in embodiments , the device 570 also includes a starting device 560 storing at least one starting angle 565 , wherein the starting device 560 is connected to the angle input in order to transmit the starting angle 565 to the angle input 520 . the device 570 can also include a subtractor circuit 575 configured to compare the differential amount 580 between two peak values 590 , 595 which deviate by the same differential angle amount from the angle signal being applied to the angle input . double angle device 585 generates two different angle signals 596 , 597 at a double angle output from the angle signal being applied to the angle input , wherein the angle input is connected to the double angle device 585 , whereby the control device 515 generates two voltage pulses in accordance with the two different angle signals .