WO2000057149A1 - Procede et dispositif de mesure d'un couple exerce sur une piece soumise a des efforts de couple et de flexion - Google Patents
Procede et dispositif de mesure d'un couple exerce sur une piece soumise a des efforts de couple et de flexion Download PDFInfo
- Publication number
- WO2000057149A1 WO2000057149A1 PCT/FR2000/000674 FR0000674W WO0057149A1 WO 2000057149 A1 WO2000057149 A1 WO 2000057149A1 FR 0000674 W FR0000674 W FR 0000674W WO 0057149 A1 WO0057149 A1 WO 0057149A1
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- sensors
- anchoring
- sensor
- signals
- studs
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
- G01L5/161—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
- G01L3/108—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving resistance strain gauges
Definitions
- the present invention relates to a method for measuring at least one component of a force torsor applied to a part, this force torsor being defined as follows in a trigonometric reference:
- each sensor comprising two studs distant by an interval equivalent to that defined between the anchoring points and a prestressed blade mounted at its ends in said studs and carrying the minus a sensitive element.
- This method and this measuring device are particularly suitable for fixed shafts undergoing a torque in reaction to a braking torque or to a driving torque.
- Ds can however be used for rotating shafts, the measuring device being, in this case, associated with an electrical transmission means with or without contact.
- the shaft to be checked is not necessarily cylindrical and its section is not necessarily circular.
- knowing the deformations of the wheel shafts makes it possible to give precise indications as to the braking torque exerted, independently for example of slipping or deformation of the wheels. Knowledge of this braking torque makes it possible in particular to improve the performance of the braking servo.
- a part subjected to a torque is also deformed by bending forces. Very often, these bending forces disturb the measurement of the torque and it is necessary to eliminate them. More generally, one may want, during a measurement, to keep certain components of the force torsor as defined above and to eliminate the others.
- strain gauges are of various types and performance. Several different technologies allow the measurement of the torque. On the other hand, few of them allow measurement via an economical, simple device, easily attached to the part to be checked, without any additional assembly member.
- strain gauges whose number, location and directions are suitably chosen, as described in many extensometry manuals. These installations are very expensive, difficult and impossible to carry out outside specialized workshops or laboratories and highly qualified personnel. We are trying to get around this difficulty by equipping strain gauges with test bodies which are then inserted between two elements of the part to be instrumented. This is the case for example of test bench couplers interposed between the motor shaft and the receiver shaft of a power transmission installation.
- torsion sensor such as that described in the publication US-A-5 831 180 which uses magnetostriction.
- This sensor is limited to the measurement of the torque on a steering rod of a vehicle where the torsional forces are low and the parasitic bending forces for example are almost nonexistent.
- This sensor has a complex shape adapted to the geometry of the bar which does not allow its industrial reproducibility at reduced costs.
- its measuring principle is very sensitive to temperature differences.
- its mounting on the shaft does not allow any possibility of adjustment.
- the measurement method based on two symmetrical sensors with respect to a plane passing through the axis of the bar does not automatically cancel the parasitic forces since the two sensors are in opposition. This sensor and its measurement method are therefore not at all suitable for the particular application of the invention.
- the present invention aims to overcome these drawbacks by providing a method of measuring a torque and a device for the implementation of this method, this device being easily industrializable and reproducible at low cost, very large. precision, very compact, can be adapted to parts of various shapes, very easy to assemble and disassemble without having to disassemble the surrounding parts, insensitive to temperature variations, which can be adjusted once mounted on the part and allowing the use of specific or commercially available sensors, these sensors being able to measure an elongation without exaggerated effort on their supports or anchoring points.
- This object is achieved by the method as defined in the preamble, characterized in that there are two separate anchoring points of each sensor on a curve of the part, this curve forming an angle ⁇ with the axis of symmetry of this room.
- the curves on which the anchor points of the two sensors are fixed are substantially parallel.
- the angle ⁇ can be between 0 and 90 ° and is preferably equal to 45 °. According to the variants of arrangement of said sensors, they can be arranged diametrically opposite on said part.
- the sensors are arranged perpendicular to the axis of symmetry of said part, the anchoring points of each sensor being offset from each other by a distance L a .
- the device as defined in the preamble and characterized in that at least one of the studs comprises adjustment means arranged to adjust the preload exerted on said blade.
- This device advantageously applies to large, unwieldy parts, which are part of a complex system which cannot be modified and / or which it is desired to instrument in large series.
- Each stud advantageously comprises a blocking shoe provided with a slot for receiving the corresponding end of said prestressed blade and fixed in said stud by a fixing screw.
- the adjustment means may comprise an adjustment screw cooperating with at least one blocking shoe to adjust its position in the direction of said prestressed blade.
- the coupling members comprise anchoring studs, each anchoring stud comprising an upper flat fixed integrally to a stud of a sensor and a lower face having a shape adapted to that of said piece and fixed integrally to this last.
- the stud can be fixed to the corresponding anchoring stud by means of a removable fixing member and the anchoring stud can be fixed to said piece by a fixing method chosen from bonding, welding, screwing, overmolding.
- the anchoring pads are made of a rigid, non-deformable material, such as a metal or a metal alloy.
- the computer is chosen from an adder and a subtractor, digital or analog.
- the method according to the invention has the main advantages of providing reliable and precise information related to the torsional torque of a part, with a minimum number of sensors, that is to say two, by automatically eliminating the parasitic forces even if these are significant. , by automatically compensating for any expansions due to temperature variations, by means of basic packaging electronics placed near these sensors as well as with simple analytical or digital processing.
- FIGS. 1 and 2A to 2C represent block diagrams of the method and of the device according to the invention
- FIG. 3 is a view in longitudinal section of a sensor of the device of the invention
- FIG. 4 is a perspective view of the sensor of FIG. 3,
- FIG. 5 represents an example of mounting the sensor of FIG. 3,
- FIGS. 6 to 8 represent different possible locations of the sensors of the device of the invention
- FIGS. 9A and 9B represent the deformations undergone respectively in the event of a bending moment and of a shearing force
- Figures 10A to 10D represent the polar diagrams of the signal obtained by the sensors of the device of the invention according to different layouts
- Figures 11A and 11B represent two examples of associated electronic circuit to said sensors of the device of the invention allowing two different combinations of signals.
- FIG. 1 schematically represents a complete torque measuring device 10 according to the invention.
- a mechanical part 1 is subjected to bending forces Fx and Fz associated with their moments Mx and MZ and to a torsional moment My associated with the force Fy. Consequently, the force torsor of such a system is defined as follows in a trigonometric coordinate system:
- This part 1 is instrumented with two identical sensors 2, attached to the mechanical structure to be studied of said part by coupling members 3 and arranged to supply electrical signals as a function of possible deformations of said structure. These sensors 2 are connected by electrical links 4, support for transferring said signals, to a signal conditioner 5. The signals are then transmitted, via a transmitter 6, to a computer 7 which, after digital combination of these signals, will deliver a indication of the torque forces applied to said mechanical part 1.
- This combination of signals can be performed in the conditioner 5 itself, analogically, or in the computer 7 digitally.
- the mechanical part 1 can be a shaft of circular section or not, a connecting shaft between two rotating machines, a shaft of the wheels of a vehicle (truck axle, of rail vehicle, etc.) or even the rocket of a landing gear of an airplane. If this shaft is only subjected to a pure torque force C, only one attached sensor 2 is necessary. No decoupling is indeed necessary in this case. Indeed the components Fx, Fz, Fy, Mx and Mz are zero. Sensor 2 then measures only the component My.
- FIG. 2A is an end view of the instrumented part 1
- FIG. 2B is a front view of this part
- FIG. 2C is a plan view of the developed instrumented part 1. It clearly appears in FIG. 2C that the two sensors 2 are positioned in parallel on two curves (a) of the part 1 which are parallel and inclined relative to the axis of the part 1 by an angle ⁇ .
- the advantage of this configuration is that one of the sensors 2 measures both Fx, -Fz, -Mx, Mz and My, while the second measures -Fx, Fz, Mx, -Mz and My. It is the combination of the signals delivered by the two sensors 2 which makes it possible to obtain the measurement of the desired component. The addition of the signals obtained allows a measurement of My. Subtracting the signals provides an evaluation of Fx, Fz, Mx and Mz.
- Coupling members 3 allow the adaptation of the sensors 2 to the mechanical part 1. They are rigid and can be screws, studs, tongues, clamps or pins for example, but also glue or solders. These coupling members 3 allow the integral transmission of the deformations of the mechanical part 1 to the sensor 2.
- the material used is such that the specific deformations of these coupling members 3 are negligible with respect to those of the part 1. This material is for example a metal, a metal alloy or any other rigid and non-deformable material.
- the electrical signals delivered by these sensors 2 are connected to a signal conditioner 5.
- This conditioner 5 can be totally or partially internal, or even external to the two sensors 2. This can make any additional external processing unnecessary.
- the electrical connection 4 is in this case internal to the sensor 2. Only the connection by transmitter 6 exists. The latter can be of different natures. In in the case of a static tree, it can be in wire form. In the case of a rotating shaft, the connection 6 can be made by radio, optical or by rotary collector.
- the computer 7 acquires the signals from the sensors 2. If the part 1 is only subjected to a torque C, the computer 7 is not necessary, except in the case where the user wants to do resizing or changing variables. Otherwise, the computer 7 allows a decoupled measurement of the different torsional and bending forces, this by the combination of the signals from the sensors 2. In the case of a perfectly asymmetrical part, a simple addition of the signals makes it possible to deduce information from pure torque while their subtraction makes it possible to obtain bending forces as explained above. In this case, the summation of the two signals can be implemented directly in the signal conditioner 5.
- each of the signals can be weighted and then added in order to cancel the influence of certain forces which are not of interest.
- the signals will be transmitted to the computer 7 which will perform the combination of the signals in digital form.
- FIGS. 2A to 2C describe the particular location of the sensors in the context of a part 1 whose behavior as well as the geometry are symmetrical.
- two sensors 2 must be diametrically opposed on two parallel curves (a) of the part 1, this in order to decouple the bending forces and obtain a measurement of My (torsion), the component Fy being negligible with respect to the other components of the force torsor.
- the value of the angle ⁇ can be variable according to the applications, the size and the importance of the bending forces which must be freed.
- the distance D makes it possible to measure a torque and to adjust the measuring range of the sensor 2 to the torsional forces applied to the part 1.
- the sensor 2 measures the relative behavior of two curves of the structure of the part 1 in torsion. If this structure or the applied forces are not symmetrical, a modeling by the finite element method is precious to determine the zones where the sensors 2 must be implanted, this in order to decouple the torque C from the bending forces. If only a slight defect in symmetry exists, we can keep the configuration illustrated in Figure 2A. However, care should be taken to optimize the angle ⁇ and the distance D in order to obtain the best possible precision in terms of measurement. The use of a greater number of sensors 2 may be necessary in such a configuration. Their signals will also be combined there.
- the sensor 2 comprises two studs 21 between which is mounted a pre-stressed blade 22 carrying a sensitive element 22 'formed for example of a resistive, capacitive, piezoelectric gauge or any other equivalent means, deposited according to a process vacuum manufacturing in the manner of integrated circuits.
- This sensitive element 22 ′ is coupled to an electronic box 29 mounted on one of the studs 21 by electrical wires or any other electrical connection 4, this box comprising for example the conditioner 5, the transmitter 6, the computer 7 and a wired output 29 'to a remote display, not shown.
- the prestressed blade 22 is fixedly attached to the inside of the studs 21 by means of blocking shoes 24, 24 '. It has in its end zones a hole allowing the passage of a fixing screw 25 passing through a corresponding smooth hole provided in the pads and screwed into the locking shoes 24, 24 * .
- These blocking shoes 24, 24 ' have a slot receiving the corresponding ends of the prestressed blade 22.
- One of the blocking shoes 24 is fixed and the other blocking shoe 24' is movable in translation along the arrow P by means of adjustment means.
- adjustment means comprise an adjustment screw 26 disposed parallel to the prestressed blade 22 passing through a smooth hole provided in the corresponding stud 21 and screwed into the shoe 24 'in order to precisely adjust its position in the direction of the blade and, from this done, to adjust the prestressing force exerted on this blade 22.
- the end of the corresponding prestressed blade 22 is immobilized in this shoe 24 'by an intermediate screw 23 which receives the fixing screw 25.
- the corresponding stud 21 comprises an oblong hole for the passage of the fixing screw 25 allowing said adjustment.
- the production and mounting of the sensor 2 are carried out in the laboratory by qualified personnel and with all the necessary precautions and precisions in order to obtain sensors 2 which are very precise and reliable over time. This type of assembly could in no case be carried out in the workshop directly on part 1 to be checked.
- the central part of the sensor 2 containing said blade 22 and its sensitive element 22 'or the whole of the sensor 2 is either molded in a synthetic material having the function of protecting the sensor from external aggressions, or covered by a adequate housing.
- the sensor 2 thus obtained can then be very easily mounted on the part 1 to be instrumented either directly, or by means of coupling members 3 constituted by anchoring studs, provided with an upper flat 31, a heel 32 and a lower face 33 of a shape adapted to that of the part 1.
- the studs constituted by anchoring studs, provided with an upper flat 31, a heel 32 and a lower face 33 of a shape adapted to that of the part 1.
- the studs constituted by anchoring studs
- the flats 31 provided on the anchor studs 3 define between them a perfectly flat surface allowing the mounting of said sensor 2.
- These anchor studs 3 are then fixed on the part 1 to instrument, by bonding in most cases, welding, screws or any other appropriate means.
- the shape of the lower face 33 of said anchoring studs 3 is adapted to the shape of the part 1 either by machining, plastic deformation or direct molding on this part 1 in the most complicated cases. In the case of FIG.
- these anchoring studs 3 can be simply cut from a tube using a suitably oriented square punch.
- the attachment of the sensor 2 to the anchoring pads 3 by the screws 27 makes it very easily removable.
- the anchoring studs 3, located at the points of attachment of the sensor 2 on the part 1 to be checked, are very little sensitive to deformations. Therefore, the bonding is very reliable.
- a template 8 is used as illustrated in FIG. 5, the part 1 being deliberately truncated.
- This template 8 consists for example of a clamp having a shape adapted to that of the part 1. It is tightened on this part 1 by screws 82 or any other suitable means provided for tightening its legs 83, imprisoning and maintaining the anchoring studs 3, bearing on the corresponding heels 32 during the bonding phase.
- This template 8 also includes cells 81 for centering the sensors 2 in a position determined by one of the provisions adopted and / or by calculation. This template 8 is then removed when the bonding phase is completed.
- the two measurement sensors 2 can be arranged differently with reference to FIGS. 6 to 8.
- the sensors 2 are diametrically opposite and oriented along two curves (a) of the part 1, parallel and forming an angle ⁇ with the axis of symmetry of this part.
- the angle ⁇ is equal to 45 ° in accordance with the explanations given below.
- the two sensors 2 are not diametrically opposed but are placed on one side of the neutral fiber of the part 1 and symmetrically with respect to a plane passing through the axis of this part 1, each being placed on a curve (a) of the part 1 forming an angle ⁇ with the axis of symmetry of this part, the two curves (a) intersecting.
- the angle ⁇ can also be equal to 45 ° or different as required.
- the sensors 2 are arranged perpendicularly to the axis of symmetry of the part 1 and the anchoring pads 3 are offset between them by a distance L a .
- the anchor points A and B of each sensor 2 are also positioned on two curves (a) parallel to each other and inclined relative to the axis of the part 1 by an angle ⁇ .
- FIG. 6 represents an arrangement of the measurement sensor 2 allowing the best measurement of the torsional moment My. This moment My translates into a matrix
- the value read by the sensor will be a part of that of the previous case, corresponding to the projection of the previous elongation ⁇ L on the axis of the sensor.
- the sensor will be less sensitive to torsion and more to parasitic deformations, as well as to other components of the force torsor. This arrangement can be used when the arrangement in FIG.
- FIG. 8 represents a different arrangement of the sensor 2, where the latter is placed at 90 ° relative to the axis of the torsion moment My, the anchoring studs 3 being offset by a length L a perpendicular to the sensor axis.
- the sensor 2 measures an elongation proportional to the offset L a and to the relative rotation of the neighboring sections of the part 1 due to the torsional moment My. We thus measure a representative value shear.
- This arrangement can be used when the geometric constraints do not allow the assembly of FIG. 6 to be used, or when it is desired to increase or decrease the elongation ⁇ L to be measured to adapt it to the measuring range of the sensor.
- FIG. 8 represents a different arrangement of the sensor 2, where the latter is placed at 90 ° relative to the axis of the torsion moment My, the anchoring studs 3 being offset by a length L a perpendicular to the sensor axis.
- the sensor 2 measures an elongation proportional to the offset L a and to
- FIG. 9A represents the displacements recorded by these same sensors 2 under the effect of a pure bending moment.
- the sensor 2 undergoes a shortening Dd or an elongation D + d depending on whether it is above or below the neutral fiber N, at the same time as a rotation ⁇ of its anchoring pads 3.
- FIG. 9B represents the deformations of the sections of a part 1 subjected to a shearing force. If one considers a cross section, one notes that this section does not remain plane after deformation, contrary to the case of the pure bending moment, under the effect of the shearing in the direction x. Similarly, there is a relative sliding of two neighboring sections. This shear is not equally distributed in a section, but maximum at the level of the neutral fiber N. The real cases of bending are most often a combination of cases 9 A and 9B.
- FIGS. 10A to 10D represent the polar diagrams of the signal of a sensor 2 mounted on a part 1 subjected to bending forces as a function of its angular position on said part 1.
- the maximum signal is recorded at 90 ° from the neutral fiber N of part 1 and the minimum signal on neutral fiber N.
- FIG. 10A corresponds to the case where the two sensors 2 are diametrically opposed, arranged on the neutral fiber N and oriented at 45 ° as in FIG. 6.
- Zero or very weak signals should be recorded.
- these sensors are not symmetrical with respect to the bending forces and, because of the phenomena described with reference to FIGS. 5A and 5B, and because the sensors have a non-negligible length, there is a very great uncertainty on the value and the sign of the deformation ⁇ L recorded, making the elimination of the bending signal very random.
- FIG. 10B corresponds to the case where the two sensors 2 are offset by an angle ⁇ relative to the neutral bending fiber N ( ⁇ > 30 °) and are diametrically opposite, the angle ⁇ being equal to 180 °.
- This angular offset allows the sensors 2 to supply with certainty signals of opposite signs which can be combined according to the electrical diagram illustrated in FIG. 11A in order to eliminate the bending forces, with a possible weighting of each sensor if the asymmetry of the polar diagram makes it necessary.
- the measurements carried out often show a significant asymmetry of the bending diagram between the zones in traction (represented by the sign +) and the zones in compression (represented by the sign -). It can also happen, in the case of braking in particular, that one of the components Fx or Fz is variable, thus modifying the orientation of the resultant causing the bending and therefore that of the polar diagram.
- the angles ⁇ and ⁇ will be determined by calculation and / or tests to have the best possible combination of signals of opposite sign in all operating cases.
- FIG. 10D corresponds to a variant of the arrangement of the sensors 2 as illustrated in FIG. 7.
- the sensors 2 are arranged along lines of torsional force of opposite sign. In projection, they will no longer appear crossed at 90 ° but parallel.
- the angles ⁇ and ⁇ are defined such that the sensors 2 are on the same side of the neutral bending fiber, the angle ⁇ being close to 90 °.
- the combination of the signals will in this case be as following the electrical diagram illustrated by FIG. 11B. In this case, we subtract two torsion signals of opposite sign and two bending signals of the same sign.
- FIG. 11A illustrates an example of an electronic circuit 9 to allow the conditioning and the combination of the signals in the case of the arrangements of the measurement sensors 2 illustrated in FIGS. 1, 6 and 8.
- This electronic circuit 9 comprises the two sensors 2 supplied electrically by a supply A and each delivering a signal SU, SI2, a signal conditioner 5 associated with each sensor 2 and each delivering an output signal SI, S2 and a computer 7 which is, in this case, an analog summator, but which can be replaced by a digital computer.
- the signal conditioner 5, or conditioner of the gauge bridge includes a bridge supply voltage regulator 51, an instrumentation amplifier 52 and a calibration and temperature correction device 53. These compensations can be carried out by mechanical or analog or digital. There are circuits carrying out all of the functions 51 to 53 either analogically or digitally.
- the summator 7 comprises four resistors RI, R2, R3, R4 and a differential amplifier 71 which delivers an output signal S as a function of the signals SI and S2 according to the following formula:
- FIG. 11 A shows the most universal assembly with separate packaging for each measurement sensor 2. It is naturally possible to simplify or group the packaging of the two sensors.
- FIG. 11B represents an example of an electronic circuit 9 'to allow the conditioning and the combination of the signals in the case of the arrangement illustrated in FIG. 7. It can also be used in an assembly of the type represented in FIG. 10B, when we want, outside of the braking periods on a vehicle, to measure the component of the weight exerted on the instrumented wheel shaft. It consists, in addition to the two measurement sensors 2 and the signal conditioners 5, of a computer 7 'corresponding to a subtractor which can be analog as shown or digital.
- the output signal S corresponds to the following formula:
- the part 1 When the part 1 is a part whose behavior as well as the geometry are symmetrical, the application of a bending force generates a modification of the distance between the anchoring points A and B of the measurement sensors 2 placed on this part 1. This distance increases for one of the sensors and decreases for the second. If part 1 is perfectly symmetrical, the absolute value of this displacement is the same for each of the two sensors. When the signals from the two sensors are added together, a signal does not vary as a function of the force applied. If there is a slight asymmetry in part 1, each of these signals can be weighted in order to obtain a constant signal as a function of the bending load applied.
- the application of a torque also generates a variation in the distance between the anchoring points A and B of the measurement sensors 2 placed on this part 1 This variation is the same direction for the two sensors. If we add the two signals, weighted or not, we obtain a signal representative of the torque My applied to part 1.
- the present invention applies mainly to braking devices of all types of vehicles: motor vehicles, trucks, railways, airplanes as well as rotating machines for monitoring, controlling and regulating the brakes, but also controlling the parts themselves. - same.
- the wheel axles of vehicles are subjected to complex and colossal forces, due both to the weight of the vehicle and to the braking force.
- the parasitic forces (bending and others) can sometimes be as great as the torsional forces to be measured. It follows that the torsion sensors must meet very strict specifications, the essential points of which are recalled below:
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00912717A EP1181517A1 (fr) | 1999-03-19 | 2000-03-17 | Procede et dispositif de mesure d'un couple exerce sur une piece soumise a des efforts de couple et de flexion |
US09/937,000 US6658942B1 (en) | 1999-03-19 | 2000-03-17 | Method and device for measuring a torque exerted on a part subjected to torque and bending loads |
AU34375/00A AU3437500A (en) | 1999-03-19 | 2000-03-17 | Method and device for measuring a torque exerted on a part subjected to torque and bending loads |
CA002366546A CA2366546A1 (fr) | 1999-03-19 | 2000-03-17 | Procede et dispositif de mesure d'un couple exerce sur une piece soumise a des efforts de couple et de flexion |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9903626A FR2791133B1 (fr) | 1999-03-19 | 1999-03-19 | Procede et dispositif de mesure d'un couple exerce sur une piece soumise a des efforts de couple et de flexion |
FR99/03626 | 1999-03-19 |
Publications (1)
Publication Number | Publication Date |
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WO2000057149A1 true WO2000057149A1 (fr) | 2000-09-28 |
Family
ID=9543552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/FR2000/000674 WO2000057149A1 (fr) | 1999-03-19 | 2000-03-17 | Procede et dispositif de mesure d'un couple exerce sur une piece soumise a des efforts de couple et de flexion |
Country Status (6)
Country | Link |
---|---|
US (1) | US6658942B1 (fr) |
EP (1) | EP1181517A1 (fr) |
AU (1) | AU3437500A (fr) |
CA (1) | CA2366546A1 (fr) |
FR (1) | FR2791133B1 (fr) |
WO (1) | WO2000057149A1 (fr) |
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WO2003081170A2 (fr) * | 2002-03-27 | 2003-10-02 | Philippe Maubant | Dispositif de mesure extensometrique |
CN102636304A (zh) * | 2012-04-26 | 2012-08-15 | 哈尔滨电机厂有限责任公司 | 标准化高精度的模型导水瓣轴扭矩测量结构 |
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JP7034811B2 (ja) * | 2018-04-09 | 2022-03-14 | 日本電産コパル電子株式会社 | 歪センサの固定装置とそれを用いたトルクセンサ |
EP3904854A4 (fr) | 2018-12-28 | 2022-09-21 | NHK Spring Co., Ltd. | Dispositif de détection de contrainte |
DE202019104976U1 (de) * | 2019-09-09 | 2020-12-10 | Maxion Wheels Holding Gmbh | Fahrzeugrad mit Überwachungseinrichtung und Überwachungseinrichtung für Fahrzeugräder |
JP7321872B2 (ja) * | 2019-10-09 | 2023-08-07 | ニデックコンポーネンツ株式会社 | 歪センサの固定装置とそれを用いたトルクセンサ |
JP7321871B2 (ja) * | 2019-10-09 | 2023-08-07 | ニデックコンポーネンツ株式会社 | 歪センサの固定装置とそれを用いたトルクセンサ |
JP7350606B2 (ja) * | 2019-10-09 | 2023-09-26 | ニデックコンポーネンツ株式会社 | 歪センサの固定装置とそれを用いたトルクセンサ |
JP7350605B2 (ja) * | 2019-10-09 | 2023-09-26 | ニデックコンポーネンツ株式会社 | 歪センサの固定装置とそれを用いたトルクセンサ |
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US3780817A (en) * | 1969-02-28 | 1973-12-25 | J Videon | Weighing devices |
US5585572A (en) * | 1992-05-09 | 1996-12-17 | Kindler; Ulrich | Deformation measuring device for measuring the torque of a cylindrical shaft |
US5831180A (en) * | 1995-02-13 | 1998-11-03 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Torque sensing and strain detecting device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2560204A1 (fr) * | 1984-02-24 | 1985-08-30 | Elf Aquitaine | Procede et installation de distillation de petrole par separations progressives |
ES2028421T3 (es) * | 1988-08-11 | 1992-07-01 | Siemens Aktiengesellschaft | Preceptor del valor medido para variaciones de longitud o de distancia, especialmente para la medicion sin contacto fisico de momentos de giro en arboles rotativos. |
US5546817A (en) * | 1993-06-04 | 1996-08-20 | Liberty Technologies, Inc. | Stem torque sensor |
-
1999
- 1999-03-19 FR FR9903626A patent/FR2791133B1/fr not_active Expired - Fee Related
-
2000
- 2000-03-17 US US09/937,000 patent/US6658942B1/en not_active Expired - Fee Related
- 2000-03-17 WO PCT/FR2000/000674 patent/WO2000057149A1/fr not_active Application Discontinuation
- 2000-03-17 AU AU34375/00A patent/AU3437500A/en not_active Abandoned
- 2000-03-17 CA CA002366546A patent/CA2366546A1/fr not_active Abandoned
- 2000-03-17 EP EP00912717A patent/EP1181517A1/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3780817A (en) * | 1969-02-28 | 1973-12-25 | J Videon | Weighing devices |
US5585572A (en) * | 1992-05-09 | 1996-12-17 | Kindler; Ulrich | Deformation measuring device for measuring the torque of a cylindrical shaft |
US5831180A (en) * | 1995-02-13 | 1998-11-03 | Kabushiki Kaisha Toyoda Jidoshokki Seisakusho | Torque sensing and strain detecting device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003081170A2 (fr) * | 2002-03-27 | 2003-10-02 | Philippe Maubant | Dispositif de mesure extensometrique |
FR2837920A1 (fr) * | 2002-03-27 | 2003-10-03 | Philippe Maubant | Dispositif de mesure extensometrique |
WO2003081170A3 (fr) * | 2002-03-27 | 2004-04-08 | Philippe Maubant | Dispositif de mesure extensometrique |
CN102636304A (zh) * | 2012-04-26 | 2012-08-15 | 哈尔滨电机厂有限责任公司 | 标准化高精度的模型导水瓣轴扭矩测量结构 |
Also Published As
Publication number | Publication date |
---|---|
FR2791133A1 (fr) | 2000-09-22 |
EP1181517A1 (fr) | 2002-02-27 |
AU3437500A (en) | 2000-10-09 |
US6658942B1 (en) | 2003-12-09 |
CA2366546A1 (fr) | 2000-09-28 |
FR2791133B1 (fr) | 2001-10-12 |
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