Device for determining torque on shaft, power take-off transmission having power take-off shaft, and working machine

Abstract

The invention relates to a device (100) for determining a torque on a shaft (110). The invention relates to a torque sensor, comprising a shaft (110) for transmitting a torque, a first signal generator (120) arranged on the shaft (110) in a rotationally fixed manner, a second signal generator (130) spaced apart from the first signal generator (120) and arranged on the shaft (110) in a rotationally fixed manner, a first sensor (121) associated with the first signal generator (120) for generating first measurement data, and a second sensor (121) associated with the second signal generator (120) for generating second measurement data, a second sensor (131) associated with the second signal generator (130) for generating second measurement data, and a control unit, the control unit being designed to determine a torsion of the shaft (110) as a function of the first and second measurement data, and the control unit further being designed to determine a torque as a function of the torsion. The device (100) according to the invention is characterized in that the first signal generator (120) is designed as a first clutch cover (120) and the second signal generator (130) is designed as a second clutch cover (130). The invention also relates to a power take-off transmission having a power take-off shaft and to a corresponding work machine.

Description

Technical Field

[0001] The present invention relates to a device for determining torque on a shaft according to the preamble of claim 1, and a corresponding power output transmission having a power output shaft and a corresponding working machine. Background Technology

[0002] In the prior art, particularly for agricultural machinery, a power take-off (PTO) shaft is known, which enables the driving of work equipment that can be coupled to the machinery. Examples of such driveable work equipment include lawnmowers, balers, or fertilizer applicators. Furthermore, also for agricultural machinery, a travel PTO shaft is known, which enables the driving of a driveable trailer that can be coupled to the machinery. The output speed and torque of the known PTO shafts and travel PTO shafts are typically determined by the engine speed or torque of the agricultural machinery's engine. Typically, a transmission unit located upstream of the PTO shaft also has multiple switchable gear levels that set the engine speed or torque in an adjustable ratio to the output speed or torque of the PTO shaft.

[0003] Relatedly, DE 10 2017 108 307 A1 describes an apparatus for measuring torque at a rotatable bearing shaft, wherein the shaft is connected to a hub via a form-fit, force-fit, or material-fit connection in the radial direction. At least one measuring element made of magnetizable steel is arranged between the shaft and the hub. The apparatus also includes electronic devices for detecting the magnetic field of the measuring element, wherein applying torque to the shaft causes a change in the magnetic field, from which the torque can be calculated.

[0004] A system for measuring torque at a shaft is known from US 8,079,274 B2. Two signal-generating magnetic rings are arranged on the shaft in a manner resistant to relative rotation and axially spaced from each other. The magnetic rings have alternating magnetic south and magnetic north poles along their outer circumference. The rotational motion of each magnetic ring can be measured separately by means of a sensor. By comparing the measurement signal waveforms generated by the motion of the magnetic rings, the torsion of the shaft can be determined, and thus the torque transmitted by the shaft can be determined.

[0005] JP 6 372 231 B2 describes a method for measuring torque on a shaft. Magnetic encoder wheels, spaced axially from each other, are arranged on the shaft, each encoder wheel having a repeatingly varying magnetic property. Each encoder wheel is equipped with a sensor that detects the magnetic property of the encoder wheel. The torque transmitted by the shaft can then be calculated based on the time difference between the edges of the measurement signal pulses caused by the torsion of the shaft.

[0006] US 8,666,682 B2 discloses an apparatus for measuring torque transmitted through a rotating element that rotates about a longitudinal axis relative to a fixed element. The apparatus includes a first torsional reference element fixedly coupled to a shaft at a first axial position; and a second torsional reference element fixedly coupled to the shaft at a second axial position. The apparatus also includes a first detector coupled to the fixed element and configured such that the first detector detects the passage of the first torsional reference element at a first detector location for each complete rotation of the shaft, and generates a first signal each time the first torsional reference element passes; and a second detector coupled to the fixed element and configured such that the second detector detects the passage of the second torsional reference element at a second detector location for each complete rotation of the shaft, and generates a second signal each time the second torsional reference element passes. A controller is configured to: calculate a phase difference between the first and second signals relative to a time reference during rotation of the rotating element under torsional load, and compare the phase difference with a reference value. The controller then calculates the torque load from the ratio of the phase difference to the reference value.

[0007] However, known methods and devices for detecting torque via the torsion of a shaft that transmits torque have the disadvantage that they can only be implemented relatively costly. Summary of the Invention

[0008] The object of this invention is to provide an improved device for determining torque on a shaft.

[0009] This objective is achieved according to the invention by means of a device for determining torque on a shaft according to claim 1. Advantageous designs and improvements of the invention are derived from the dependent claims.

[0010] The present invention relates to an apparatus for determining torque on a shaft, comprising a shaft for transmitting torque, a first signal generator arranged on the shaft in a manner resistant to relative rotation, a second signal generator spaced apart from the first signal generator and arranged on the shaft in a manner resistant to relative rotation, a first sensor associated with the first signal generator for generating first measurement data, a second sensor associated with the second signal generator for generating second measurement data, and a control unit, wherein the control unit is configured to: determine the torsion of the shaft based on the first and second measurement data, and wherein the control unit is further configured to determine the torque based on the torsion.

[0011] Therefore, the present invention describes a device configured for determining torque transmitted via a shaft. Here, the shaft can be, for example, arranged in a transmission, and particularly as a component of the transmission. The transmission can be, for example, a transmission for a motor vehicle, advantageously a transmission for agricultural or construction machinery. Preferably, the shaft transmits the driving torque of a drive unit, such as the driving torque of an internal combustion engine or electric motor, to the output end of the transmission.

[0012] Because of the torque transmitted through the shaft, the shaft twists according to the transmitted torque. Therefore, the twist of the shaft can be used as a measure of the transmitted torque.

[0013] Furthermore, the torsion of a shaft also depends on its torsional elastic constant and its length. The longer the shaft, the stronger its torsion.

[0014] A first signal generator and a second signal generator are arranged anti-rotatingly on the shaft, spaced apart from each other. Advantageously, the first and second signal generators are spaced apart over a large portion of the axial length of the shaft. In other words, this means that the first signal generator is located in a region at a first axial end of the shaft, and the second signal generator is located in a region at a second axial end of the shaft. Preferably, the axial distance between the first and second signal generators is at least 30 cm, particularly preferably at least 50 cm, and very particularly preferably at least 65 cm.

[0015] Since the first and second signal generators are arranged on the shaft in a manner resistant to relative rotation, they accordingly follow the rotational motion of the shaft as well as the torsional motion on the shaft.

[0016] The first and second signal generators are configured to provide signals describing rotational or torsional motion, respectively. In principle, these can also be mechanical, electrical, magnetic, or optical signals.

[0017] A first sensor is coupled to a first signal generator, enabling it to detect a signal provided by the first signal generator and generate first measurement data therefrom. Here, the first measurement data describes the signal detected by the first signal generator over time.

[0018] In a similar manner, the second sensor is coupled to the second signal generator, enabling it to detect the signal provided by the second signal generator and generate second measurement data from it. Here, the second measurement data describes the signal detected by the second signal generator over time.

[0019] The control unit is advantageously configured as an electronic control unit, which is connected at the data level to the first and second sensors in order to acquire first and second measurement data from them.

[0020] According to the present invention, a first signal generator is configured as a first clutch housing, and a second signal generator is configured as a second clutch housing.

[0021] The advantage derived from this is that components already existing in the drive system can be utilized in the form of a clutch cover, making the implementation cost of the device according to the invention in the drive system relatively low.

[0022] The present invention has recognized that the first and second clutch housings are also well-suited as signal generators for determining torque, because torque is transmitted via the shaft only when both the first and second clutches are engaged. Furthermore, whenever the first and second clutches are engaged, the first and second clutch housings are connected to the shaft against relative rotation and rotate at the same speed as the shaft.

[0023] According to a preferred embodiment of the present invention: a first sensor senses the outer periphery of a first signal generator, wherein the first signal generator has a signal generating section and a non-signal generating section at its outer periphery, wherein the signal generating section and the non-signal generating section are asymmetrically distributed on the outer periphery of the first signal generator; and / or a second sensor senses the outer periphery of a second signal generator, wherein the second signal generator has a signal generating section and a non-signal generating section at its outer periphery, wherein the signal generating section and the non-signal generating section are asymmetrically distributed on the outer periphery of the second signal generator.

[0024] By having signal generating sections and non-signal generating sections present at the first or second signal generator, and in particular by alternating arrangement of signal generating sections and non-signal generating sections, the rotational motion of the first or second signal generator can be sensed very reliably.

[0025] Here, the first sensor points its detection area toward the outer periphery of the first clutch housing, enabling it to detect signal-generating sections at the rotating outer periphery. Therefore, during rotational motion, rotational motion can be identified by the alternation of signal-generating and non-signal-generating sections within the detection area of ​​the first sensor.

[0026] The rotational speed of the shaft can also be advantageously determined by sensing the alternation speed between the signal generating section and the non-signal generating section.

[0027] Here, the non-signal generating sections will not be detected by the first sensor because they are unrecognizable to it. Therefore, as a measure of shaft rotational speed, it is particularly advantageous to use the time interval between sensing two signal generating sections. Alternatively or additionally, as a measure of shaft rotational speed, it is also possible to use a time interval between not sensing two non-signal generating sections.

[0028] In a similar manner, the rotational motion or speed of the shaft can be detected by a second sensor.

[0029] By asymmetrically distributing the signal generating sections and non-signal generating sections on the outer periphery of the first or second clutch cover, the angular orientation of the shaft can be determined. Therefore, through the asymmetrical construction of the signal generating sections and non-signal generating sections, each section can be individually constructed, allowing the angular position of the corresponding clutch cover and thus the angular orientation of the shaft to be inferred by sensing and identifying specific individual sections and based on their known arrangement on the outer periphery. For this purpose, it is advantageous to employ a clutch cover that is connected to the shaft in a manner resistant to relative rotation even when the mating clutch is in the open state, ensuring that the rotational orientation of the clutch cover relative to the shaft is always the same and known.

[0030] Here, the asymmetrical construction scheme is advantageously asymmetrical in the circumferential width of the segments, that is, the asymmetrically distributed segments have different lengths on the outer periphery of the corresponding clutch housings.

[0031] According to another preferred embodiment of the present invention, the signal generating section is based on the material, and the non-signal generating section is a material void.

[0032] Therefore, this means that the first or second sensor is capable of sensing the presence of material in the first or second signal generator. Consequently, the outer periphery of the first or second signal generator can preferably be gear-shaped, wherein the teeth at the outer periphery of the first or second signal generator are sensed. The gap between the two teeth is a material void and is therefore not sensed.

[0033] This is a simple and equally reliable implementation where signal generation sections and non-signal generation sections are located at the periphery of the first or second signal generator.

[0034] According to another preferred embodiment of the invention, a first clutch cover is made of steel and is coupled to a first plate clutch, and a second clutch cover is made of steel and is coupled to a second plate clutch.

[0035] Steel offers advantages as a material for the first or second signal generator: it is relatively easy and reliable to sense, for example, through its optical, magnetic, or electrical properties. Furthermore, steel is mechanically robust, making it suitable for manufacturing high-load clutches or clutch housings.

[0036] With the first and second clutch covers respectively engaged with the plate clutch, the shaft used for transmitting torque can be switched under any speed difference and load.

[0037] According to another preferred embodiment of the invention, the first sensor is configured as a first Hall sensor, and the second sensor is configured as a second Hall sensor.

[0038] Hall sensors enable highly reliable sensing of magnetic fields, making them particularly suitable for use in conjunction with signal generators made of ferromagnetic materials (such as steel) to sense signal-generating or non-signal-generating sections.

[0039] In addition, Hall sensors are relatively inexpensive and have a compact design.

[0040] According to another preferred embodiment of the invention, the first measurement data includes a transition from a signal generating section to a non-signal generating section or vice versa at the first signal generator, and the second measurement data includes a transition from a signal generating section to a non-signal generating section or vice versa at the second signal generator.

[0041] The transition from the signal generating section to the non-signal generating section, or vice versa, enables the most accurate determination of the angular orientation at the first or second clutch housing because (unlike the signal generating and non-signal generating sections themselves) the transition is a steep point at the outer periphery of the signal generator. This improves the accuracy of determining the angular orientation, rotational speed, and thus the torsion.

[0042] Advantageously, the first and second measurement data each contain multiple distinct, sequential transitions. Therefore, the rotational speed can be reliably determined from the time intervals of the detected transitions. Furthermore, the change in torque transmitted by the shaft over time can be accurately identified at any time based on variations in torsion.

[0043] According to another preferred embodiment of the invention, the control unit is configured to determine the rotational speed of the shaft based on the duration between at least two transitions at the first signal generator and / or the second signal generator.

[0044] As previously mentioned, the transition from the signal generation section to the non-signal generation section, or vice versa, provides relatively precise information about the angular orientation of the first or second signal generator. Therefore, the shaft rotational speed can be reliably determined based on the duration between the two transitions detected at the first or second signal generator.

[0045] Typically, the rotational speed determined at the first signal generator is the same as the rotational speed determined at the second signal generator. The deviation between the rotational speed determined at the first signal generator and the rotational speed determined at the second signal generator occurs particularly when the torque transmitted by the shaft changes, thus causing a change in the shaft's torsion. During torsional changes, the rotational speed at the first signal generator and the rotational speed at the second signal generator will naturally have a slight difference for a short period of time.

[0046] Advantageously, the control unit is configured to determine the shaft speed based on the average duration of the last ten detected transitions at the first and / or second signal generators. This avoids short-term detected speed fluctuations due to variations in the transmitted torque.

[0047] Furthermore, advantageously, the control unit assigns a timestamp to each detected transition. Therefore, the average rotational speed during these transitions can be determined based on the timestamp, and in particular, based on a preset number of transitions, such as five, ten, or fifteen.

[0048] According to another preferred embodiment of the invention, the control unit is configured to determine the angular position of the shaft based on the duration between at least two transitions at the first signal generator and / or the second signal generator.

[0049] Here, the present invention specifically utilizes the asymmetrical distribution of the signal generation section and the non-signal generation section on the outer periphery of the first or second signal generator.

[0050] Therefore, advantageously, by combining the determined rotational speed, it is possible to identify which specific signal-generating section or non-signal-generating section is being detected by the first or second sensor. Thus, the angular orientation of the shaft can also be determined via this information and the known angular orientation of the first or second signal generator on the shaft.

[0051] The angular orientation of the shaft can be used, for example, to determine the angular orientation of the interface between the shaft and an auxiliary device that can be driven by the shaft. This can simplify the coupling of the auxiliary device and the shaft.

[0052] According to another preferred embodiment of the invention, the control unit is configured to determine the rotational speed and / or angular position of the shaft based on a plurality of durations.

[0053] This can compensate for the short-term fluctuations in torque transmitted by the shaft.

[0054] According to another preferred embodiment of the invention, the control unit has a processor specifically associated with torque determination and / or speed determination.

[0055] This means that the control device includes a processor configured solely for determining torque or rotational speed. Therefore, torque or rotational speed can be determined at any time, without delay, regardless of the computational load arising from other processes handled by the main processor within the control device.

[0056] A processor specifically designed for torque or speed determination is preferably a so-called coprocessor.

[0057] The present invention also relates to a power output transmission having a power output shaft, the power output transmission including a device according to the invention, wherein the device is configured to determine the torque on the power output shaft.

[0058] The advantages already described in the device description according to the invention are also applicable to the power output transmission according to the invention.

[0059] The present invention also relates to a working machine comprising a power output transmission according to the present invention.

[0060] The advantages described in the device according to the invention are also applicable to the working machinery according to the invention.

[0061] Wheel loaders are preferred for operation. However, compact loaders, telescopic forklifts, dump trucks, excavators, or tractors are also acceptable. Attached Figure Description

[0062] The present invention will now be described by way of example with reference to the embodiments shown in the figures.

[0063] The attached diagram shows: Figure 1 An exemplary and schematic depiction of one possible configuration of the device for determining torque on a shaft according to the present invention is shown. Figure 2 An exemplary and schematic depiction of one possible configuration of the first clutch cover is shown. Figure 3 The measured duration of each transition from the signal generating section to the non-signal generating section of the first clutch housing, or vice versa, is illustrated exemplary and schematically. Figure 4 The deviation from the target value of time offset between the expected transition at the first clutch housing caused by shaft torsion and the actual transition of the first clutch housing is illustrated exemplary and schematically.

[0064] The same subjects, functional units, and similar parts are denoted by the same reference numerals in all figures. Unless otherwise expressly or implicitly derived from the description, the subjects, functional units, and similar parts are identical in their technical features. Detailed Implementation

[0065] Figure 1 An exemplary and schematic depiction is shown of one possible configuration of the device 100 according to the invention for determining the torque on shaft 110.

[0066] In addition to the shaft 110 for transmitting torque, the device 100 also includes a first signal generator 120 arranged on the shaft 110 in a manner resistant to relative rotation, a second signal generator 130 spaced apart from the first signal generator 120 and arranged on the shaft 110 in a manner resistant to relative rotation, a first sensor 121 associated with the first signal generator 120 for generating first measurement data, a second sensor 131 associated with the second signal generator 130 for generating second measurement data, and (…). Figure 1 (Not shown in the diagram) Control unit. Here, the first signal generator 120 is configured as the first clutch housing 120, and the second signal generator 130 is configured as the second clutch housing 130.

[0067] The control unit is configured to: determine the torsion of the shaft 110 based on first and second measurement data, and also determine the torque transmitted by the shaft 110 based on the torsion.

[0068] According to the example, shaft 110 is the power output shaft 110 of a power output transmission, which includes device 100.

[0069] According to the example, the power output transmission is ( Figure 1 (Not shown) Power output transmission for agricultural machinery.

[0070] According to the example, the first sensor 121 is arranged and configured such that it senses the outer periphery of the first clutch housing 120, wherein the first clutch housing 120 has signal generating sections and non-signal generating sections at its outer periphery.

[0071] In a similar manner, according to the example, the second sensor 131 is also arranged and configured such that it senses the outer periphery of the second clutch housing 130, wherein the second clutch housing 130 also has signal generating sections and non-signal generating sections at its outer periphery.

[0072] According to the example, the first clutch housing 120 and the second clutch housing 130 are made of steel. The first sensor 121 and the second sensor 131 are, according to the example, Hall sensors 121 and 131, which are capable of sensing the presence of steel having ferromagnetic properties.

[0073] The signal generation sections of the first clutch cover 120 and the second clutch cover 130 are each based on material. In the context of this invention, this should be understood as the presence of material, i.e., steel, in the sections, and the absence of any material gaps.

[0074] Conversely, the non-signal generating sections of the first clutch cover 120 and the second clutch cover 130 are configured as material-free sections, that is, there is no material, i.e., no steel, in the sections.

[0075] According to the example, the signal generating section and the non-signal generating section are asymmetrically distributed on the outer periphery of the first clutch cover 120 and the second clutch cover 130, respectively. In the context of this invention, the asymmetrical distribution should be understood as: the successively following signal generating section or non-signal generating section having different sizes or lengths.

[0076] The first measurement data or the second measurement data detected by the first sensor 121 and the second sensor 131, according to the example, respectively include the last ten transitions from the signal generation section to the non-signal generation section or vice versa.

[0077] The control unit assigns a timestamp to each transition in the first and second measurement data.

[0078] Therefore, the control unit can determine the rotational speed of shaft 110 based on the duration between each two successive transitions at the first clutch cover 120 and the second clutch cover 130.

[0079] Due to the asymmetrical distribution of the signal generating section and the non-signal generating section on the outer periphery of the first clutch cover 120 and the outer periphery of the second clutch cover 130, the control unit can also determine the angular position of the shaft 110 by combining the duration of the rotational speed dependent between at least two transitions at the first signal generator 121 or the second signal generator 131.

[0080] Figure 2 One possible configuration of the first clutch cover 120 is shown exemplary and schematically.

[0081] According to the example, the first clutch housing 120 is made of steel and has an outer perimeter 122. The outer perimeter 122 is composed of signal generating sections 123 and non-signal generating sections 124. The signal generating sections 123 are material-based, i.e., they are made of steel from the clutch housing 120. The non-signal generating sections 124 are configured as material gaps 124.

[0082] exist Figure 2 In the same implementation, it can also be a second clutch cover 130.

[0083] Figure 3 The duration t, measured over a continuous number of revolutions n on shaft 110, is illustrated exemplaryly and schematically. The duration t describes the transition from the signal generating section of the first clutch housing 120 to the non-signal generating section of the first clutch housing 120, or vice versa, at a constant rotational speed of shaft 110.

[0084] As can be seen, according to the example, the duration 200 of each interval is relatively short. Here, the shorter duration 200 corresponds to the non-signal generation section 124, which are all the same size, so that at a constant rotational speed, the duration 200 is the same until the subsequent transition to the signal generation section 123.

[0085] The durations 201, 202, and 203 associated with the signal generation section 123 are partially different from each other because the signal generation section 123 is, by example, asymmetrically distributed on the outer periphery of the first clutch cover 120. Durations 201, 202, and 203 repeat from duration 203 onwards, as the outer periphery rotates continuously. Therefore, the angular position of the shaft 110 can be inferred from the last detected transition, such as transition 203.

[0086] In a similar manner, the duration of each transition from the signal generating section to the non-signal generating section is also measured at the second clutch cover 130.

[0087] Figure 4 The deviation of the target value of the time offset Δt between the desired transition at the first clutch housing 120 due to the torsion of the shaft 110 and the actual transition of the first clutch housing 120 is illustrated exemplary and schematically.

[0088] The torsion of shaft 110 occurs due to the torque transmitted through shaft 110, and causes the first clutch housing 120 to twist relative to the second clutch housing 130 by a torsion-dependent angle.

[0089] Accordingly, a time offset occurs, which is a measure of the torsion of shaft 110. Here, the greater the torsion, the greater the time offset Δt.

[0090] Since torsion is the result of torque transmission, the time offset Δt can be used to determine the torque accordingly.

[0091] exist Figure 4 The example shows eight different time offsets 301, 302, 303, 304, 305, 306, 307 and 308, which represent gradually increasing torque from left to right.

[0092] List of reference numerals

[0093] 100 devices

[0094] 111 axis

[0095] 120 First signal generator, first clutch cover

[0096] 121 First sensor, first Hall sensor

[0097] 122 Periphery

[0098] 123 Signal Generation Section

[0099] 124 Non-signal generation section

[0100] 130 Second signal generator, second clutch cover

[0101] 131 Second sensor, second Hall sensor

[0102] 200 Duration

[0103] 201 Duration

[0104] 202 Duration

[0105] 203 Duration

[0106] t Duration

[0107] 301 Time Offset

[0108] 302 Time Offset

[0109] 303 Time Offset

[0110] 304 Time Offset

[0111] 305 Time Offset

[0112] 306 Time Offset

[0113] 307 Time Offset

[0114] 308 Time Offset

[0115] Δt time offset

Claims

1. A device (100) for determining torque on a shaft (110), the device comprising the shaft (110) for transmitting torque, a first signal generator (120) arranged on the shaft (110) in a rotationally resistant manner, a second signal generator (130) spaced apart from the first signal generator (120) and arranged on the shaft (110) in a rotationally resistant manner, a first sensor (121) coupled to the first signal generator (120) for generating first measurement data, a second sensor (131) coupled to the second signal generator (130) for generating second measurement data, and a control unit, wherein, The control unit is configured to determine the torsion of the shaft (110) based on the first measurement data and the second measurement data, and wherein the control unit is further configured to determine the torque based on the torsion, characterized in that the first signal generator (120) is configured as a first clutch cover (120) and the second signal generator (130) is configured as a second clutch cover (130).

2. The device (100) according to claim 1, characterized in that, The first sensor (121) senses the outer periphery (122) of the first signal generator (120), wherein the first signal generator (120) has a signal generating section (123) and a non-signal generating section (124) at its outer periphery (122), wherein the signal generating section (123) and the non-signal generating section (124) are asymmetrically distributed on the outer periphery (122) of the first signal generator (120), and / or the second sensor (131) senses the outer periphery of the second signal generator (130), wherein the second signal generator (130) has a signal generating section and a non-signal generating section at its outer periphery, wherein the signal generating section and the non-signal generating section are asymmetrically distributed on the outer periphery of the second signal generator (130).

3. The device (100) according to at least one of claims 1 or 2, characterized in that, The signal generating section (123) is based on the material, and the non-signal generating section (124) is a material void.

4. The device (100) according to at least one of claims 1 to 3, characterized in that, The first clutch cover (120) is made of steel and is associated with a first disc clutch, and the second clutch cover (130) is made of steel and is associated with a second disc clutch.

5. The device (100) according to at least one of claims 1 to 4, characterized in that, The first sensor (121) is configured as a first Hall sensor (121), and the second sensor (131) is configured as a second Hall sensor (131).

6. The device (100) according to at least one of claims 1 to 5, characterized in that, The first measurement data includes a transition from the signal generating section (123) to the non-signal generating section (124) at the first signal generator (120) or vice versa, and the second measurement data includes a transition from the signal generating section to the non-signal generating section at the second signal generator or vice versa.

7. The device (100) according to at least one of claims 1 to 6, characterized in that, The control unit is configured to determine the rotational speed of the shaft (110) based on the duration between at least two transitions at the first signal generator (120) and / or the second signal generator (130).

8. The device (100) according to at least one of claims 1 to 7, characterized in that, The control unit is configured to determine the angular position of the shaft (110) based on the duration between at least two transitions at the first signal generator (120) and / or the second signal generator.

9. The device (100) according to at least one of claims 7 or 8, characterized in that, The control unit is configured to determine the rotational speed of the shaft (110) and / or the angular position of the shaft (110) based on a plurality of durations.

10. The device (100) according to at least one of claims 1 to 9, characterized in that, The control unit has a processor specifically associated with torque determination and / or speed determination.

11. A power output transmission having a power output shaft, the power output transmission comprising the device (100) according to at least one of claims 1 to 7, wherein, The device is configured to determine the torque on the power output shaft.

12. A working machine, said working machine including the power output transmission according to claim 11.

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