WO2011121069A2 - Vorrichtung und verfahren zur verarbeitung von signalen, die eine winkelstellung einer welle eines motors repräsentieren - Google Patents
Vorrichtung und verfahren zur verarbeitung von signalen, die eine winkelstellung einer welle eines motors repräsentieren Download PDFInfo
- Publication number
- WO2011121069A2 WO2011121069A2 PCT/EP2011/055004 EP2011055004W WO2011121069A2 WO 2011121069 A2 WO2011121069 A2 WO 2011121069A2 EP 2011055004 W EP2011055004 W EP 2011055004W WO 2011121069 A2 WO2011121069 A2 WO 2011121069A2
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- WIPO (PCT)
- Prior art keywords
- shaft
- address pointer
- rotation
- memory
- order
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
- G01D5/2451—Incremental encoders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D2205/00—Indexing scheme relating to details of means for transferring or converting the output of a sensing member
- G01D2205/85—Determining the direction of movement of an encoder, e.g. of an incremental encoder
Definitions
- the invention relates to a device or a method for processing signals representing an angular position of a shaft of a motor according to the preamble of the independent claims. From DE 199 33 844 Al, a device or a method for processing signals representing an angular position of a shaft of an internal combustion engine is already known, in which a direction of rotation of the shaft is detected.
- the device according to the invention or the method according to the invention according to the independent patent claims have the advantage that a storage of the times which is particularly advantageous for further processing of the information takes place.
- This type of storage allows a particularly simple logic to be used both for storing the information and for the subsequent calculations.
- periodic events can be more accurately predicted if the events that occurred one period ago are taken into account in the new calculation. It is thus a particularly simple device or a particularly simple method for processing the signals representing the angular position of the wave created.
- FIG. 1 shows a shaft of a motor and a sensor device for generating signals representing an angular position of this shaft
- FIG. 2 shows signals from the sensor of FIG. 1,
- FIGS. 3 and 4 further processed signals derived from the signals of FIG. 2;
- FIG. 5 a schematic representation of the device according to the invention
- FIG. 6 shows another address pointer
- FIG. 7 shows a sensor device for generating a position signal in an electric motor
- FIG. 1 shows a shaft 100 of an engine, for example a crankshaft of an internal combustion engine.
- a transmitter wheel is rigidly connected to the shaft
- Such a donor wheel 101 may, for example, be a metallic donor wheel, and the outer tooth structures 102 are introduced into the outer circumference of the metallic donor wheel 101 by means of corresponding cutouts.
- the tooth structures 102 are for example introduced so that they are arranged at constant angular intervals, for example 6 °.
- the full circumference of the encoder wheel 101 would then have 60 tooth structures 102, wherein for reasons of clarity in Figure 1, only a few are shown, which also each cover a larger angular range than 6 °.
- two tooth structures 102 are removed at a defined angle, so that a tooth space 103 is created.
- This tooth gap 103 serves to uniquely identify a specific position of the shaft 100.
- This arrangement of the encoder disc on a crankshaft of an internal combustion engine is already known for example from DE 199 33 844 AI.
- the tooth structures 102 pass a sensor 104, the sensor 104 having a high signal level, i. outputs a high signal when a tooth structure 102 is located immediately in front of the sensor 104 and outputs a low signal level, a low signal, when the gap between two tooth structures 102 is located immediately in front of the sensor 104.
- the output signal of the sensor 104 is shown by way of example in FIG.
- the output signal S of the sensor 104 is plotted against the time t.
- the signal S of the sensor 104 jumps from a low level to a high level at time t1 and maintains this high level as long as the tooth structure 102 passes the sensor 104.
- the signal level S drops back to the value 0.
- the signal level then jumps back to the value high, since the subsequent tooth structure 102 then emerges in front of the sensor 104. Accordingly, a jump in the signal level S is shown in FIG. 2 in each case at the time t 1, t 2, t 3, t 4, t 5 and t 6.
- a signal of a different width is generated, as shown at time t6 in FIG.
- the signal at time t6 is clearly distinguishable in its width.
- the signal associated with the period t6 may have a width of 90 ⁇ .
- the width of these signals is shown in an exaggerated manner.
- FIGS. 3 and 4 there is therefore an overlap of the signals, ie in FIG. 4 further signals are already generated which are based on an evaluation of the width of the signals of FIG.
- this is not a real effect but only due to the exaggerated width of the representation in FIG.
- the direction of rotation information can additionally be used for the further processing of the signals of the sensor 104. How can be determined based on the sensor signals 104, in which direction the shaft 100 moves, for example, the DE 199 33 844 AI can be removed. But there are also other sensors or multiple arrangements of offset sensors known, with which also the direction of rotation of the shaft 100 can be detected.
- the further processing of the signals from FIG. 3 will now be explained with reference to FIG. 4 and FIG. FIG. 5 once again shows the sensor 104, which forwards the signals as described for FIG. 3 to the signal processing device 200.
- the signal processing 200 is an apparatus for processing signals representing an angular position of the shaft of an engine. This signal processing device
- the 200 internally has a storage means 202 and a DPLL (digital phase looped loop) 203.
- the internal interconnection within the evaluation means 200 is not shown here for reasons of clarity. However, it is ensured that each of the parts of the signal processing device 200 described below is supplied with all the information necessary for its function.
- the individual parts can be designed both as hard-wired switching logic or at least partially by a universal circuit which executes a program.
- the signal processing device 200 still have a timer
- the signal processing device 200 are connected via corresponding lines to a position counter 204 and a memory 206.
- the memory 206 has a plurality of memory locations, of which two memory locations 2061 and 2062 are shown by way of example. Of the
- position counter 204 and memory 206 may also be part of the signal processing device 200.
- timer 201 and the address pointer 205 could also be implemented as external components.
- the apparatus as shown in Fig. 5 operates as follows: Whenever a signal comes in, as shown in Fig. 3 at times t1, t2, t3, t4 and t5, the storage means reads the time the signal received, from the timer 201 and stores this time in the memory 206.
- the storage in the memory 206 is carried out in a predetermined order, ie, for example, the storage of the time of receipt of the signal at time tl takes place in memory location 2061 by which it is then clear that the storage of the time at which the signal arrives at the time t2 then takes place in the memory location 2062. Because of this fixed order of storage in the memory 206, it is unambiguously determined for further calculations where the current time, ie the last received one, arrives Time is stored and where the previous time is stored. Due to the specified sequence of storing the successive points in time, it is clearly determined for subsequent calculations where the relevant time information can be found. For this purpose, the address pointer 205 is provided which points to a defined location in the memory 206.
- the address pointer 205 may contain the information on which memory location information was last stored.
- the address pointer can also point to the next memory to be used in the order. In principle, it does not matter which memory location the address pointer points to, but due to the information in the address pointer 205, it must be possible to clearly determine what the relative position of the next memory operation is and where the time information of previous memory operations can be found.
- the different pulse widths of the signals S as a function of the direction of rotation of the shaft 100 shown in FIG. 3 are evaluated in the evaluation means 200 and used to influence the storage in the memory 206.
- the order of storage in the memory 206 is in a first order.
- storage in the memory 206 occurs in the opposite order. For example, in a clockwise rotation of the shaft 100, storage is from top to bottom, and when the shaft 100 is rotated counterclockwise, storage is from bottom to top.
- This different order of storage in the memory 206 is effected by a corresponding influence on the address pointer 205.
- the address pointer 205 points to the next free memory location respectively, the address pointer 205 is incremented on each of the signals of Figure 3 as it rotates in the first direction, and if the rotation is in the opposite direction, the address pointer is decremented on each signal.
- a change in direction of rotation is shown on the basis of the signals between the times t5 and t6. From the time t6, at which it was recognized that the engine now runs backwards, the address pointer is now no longer increased, but lowered. The storage of the following Time points are therefore no longer in the memory 206 from top to bottom, but from bottom to top. If this order corresponds, it must then be taken into account in the further calculations that the further values are then stored in the memory 206 in this order.
- the times stored in the memory 206 are important, for example, for the operation of the DPLL (digital phase locked loop) 203.
- the DPLL digital phase locked loop
- FIG. 203 has the function to generate from the individual pulses of Figure 3, a plurality of sub-pulses which are referred to below as position pulses. This can be seen simply by comparing Figures 3 and 4, for example, between times t1 and t2. In the figure 3, the times tl and t2 are each characterized by a short rectangular pulse. In FIG. 4, between the times t1 and t2, a plurality of position pulses 150 output from the DPLL 203 and counted in the position counter 204 are shown. The position counter 204 thus always keeps a precise position of the shaft 100 with a much greater resolution than would be possible by the pitch of the tooth structure 102.
- the position counter 204 thus always keeps a precise position of the shaft 100 with a much greater resolution than would be possible by the pitch of the tooth structure 102.
- the position counter 204 thus always keeps a precise position of the shaft 100 with a much greater resolution than would be possible by the pitch of the tooth structure 102.
- the position counter 204 thus always keeps a
- the PLL 204 is therefore at any time the angular position of the shaft 100 in high resolution, ie removable with great accuracy.
- the PLL 203 is designed such that it always outputs an equal number of position pulses 150, as shown in FIG. 4, between two pulses of the sensor 104.
- the DPLL calculates a prediction time when the next pulse of the sensor 104 is to be expected, based on the information stored in the memory 206 about previous times between two pulses of the sensor 104.
- the DPLL then outputs the position pulses 150 at a frequency that is calculated to just output the intended number of position pulses 150 until the next sensor 104 signal arrives.
- the correction means of the DPLL would have had to issue additional position pulses 150 immediately after the time t3 in order to bring about a corresponding level of the position counter 204.
- the position counter 204 always contains precise information of the angular position of the shaft 100.
- the position counter 204 must also change its counting direction accordingly. If the position counter
- the position counter 204 is counted up in the first direction of rotation, it must be counted down accordingly upon rotation of the shaft in a second direction, which is opposite to the first direction.
- the direction of rotation can be communicated to the position counter 204 either by the PLL 203 or by other means of the signal processing device 200. In any case, the position counter receives
- FIG. 6 describes the use of a further address pointer 30 in the signal processing circuit 200 and the meaning of this further address pointer 30 for the DPPL 203.
- the further address pointer 30 points to memory locations 301, 302, 303, 304 of a further memory 300 and fetches in each time a signal from the sensor 104, ie at the times t1, t2, t3, t4, t5, t6 of FIG Memory 300 and provides this information to DPLL 203.
- There are so many memory locations 301, 302, 303 provided as tooth structures 102 are provided on the encoder wheel 101 or how many gaps are provided between the teeth. For the example as described for FIG. 1, these are 60 - 2, ie 58 memory locations.
- the gaps can have different lengths, depending on whether missing teeth are to be considered or not.
- the memory locations 301, 302, 303 associated with the normal gaps between the tooth structures 102 include the number 1 and the memory location 304 associated with the missing tooth space 103 is the number 3 , These numbers correspond to the amount of position pulses the DPLL 203 should output.
- the tooth gap 103 (which is missing 2 tooth structures 102) must output three times the number of 300 position pulses 150 .
- the address pointer 30 is set so that it in each case points to the memory location indicating the number of position pulses 150 for the next tooth structure 102 or tooth gap 103. It is thus ensured that the DPLL 302 always outputs an appropriate number of position pulses 150.
- this value 4 always has to be subtracted or added if there is initially no information about the change of direction in the case of a change of direction of the sensor 104 and the address pointers are incremented or decremented as in the last sensor signal time tx, if the values continue to be stored in the memory 206 with respect to the measured time interval of two teeth always after the corresponding interval and the information on the duration of an interval from the profile memory 300 are always fetched before the interval in question. Under other boundary conditions, other correction values are possible.
- another component which accesses the memory 300 relative to the address pointer 205 of FIG. 5 may also be used. This component would then read in the content of the address pointer 205 for access to the memory 300 and add or subtract it with an offset. For example, upon rotation of the shaft in a first
- the address pointer 205 always points to the last increment (time stamp or calculated time duration between the last two teeth) and the address pointer 30 shows the future next increment (expected time duration between the next and the next tooth). With another realization, other differences are possible. With this method, it is thus also possible to ensure that the respective value from the memory 300 is always read from the memory 300, which indicates whether the DPLL 203 should now output a simple set of position pulses or a triple set of position pulses.
- the memory content of the memory 300 has to be selected in each case adapted to the tooth gap 103.
- this is effected, for example, by the number 3, since, in the absence of two teeth, the threefold amount of position pulses 150 must be output.
- the tooth gap is smaller, for example, only one tooth is missing, then only twice the amount of position pulses 150 would have to be output from the DPLL.
- FIG. 7 schematically shows a rotor 1300 of an electric motor.
- the rotor 1300 is not shown in FIG. 7 as a round rotor but in a developed state. Representation, ie not shown as a round structure around a shaft but as a linear structure. This representation of the rotor is only for the purpose of simplified graphical representation in FIG. 7. Really, the rotor 1300 is designed as a circular structure around a shaft, as shown in FIG.
- FIG. 8 again shows an overview of the rotor 1300 of an electric motor. It is an electric motor with eight pairs of pools, d. H. eight north poles 1301 and eight south poles 1321, which are arranged alternately. Each pair of pools 1301, 1321 is associated with a tooth structure 1304 having a tooth 1305 and a tooth space 1306. This figure serves to show the overall structure of the rotor. The details of the assignment of sensors and tooth gaps are explained in the detailed representation of FIG.
- Embedded in the rotor 1300 are permanent magnets 1301, 1321 which, by applying alternating external magnetic fields through corresponding coils in the stator of the electric motor, generate a force against the field of the permanent magnets 1301, 1321 which surrounds the rotor 1300, for example in the direction indicated by the arrow 1303 Direction moves.
- the corresponding drive coils are not shown here.
- the permanent magnets 1301 forms a magnetic north pole and the permanent magnets 1321 form a magnetic south pole.
- the rotor 1300 has tooth structures 1304, each consisting of a tooth 1305 and a tooth space 1306. In the area of the tooth 1305, the rotor 1300 is made thicker, i. H. it forms the tooth 1305 and in the region of the tooth gap 1306, the rotor 1300 is made thinner and thus forms the tooth gap
- the tooth 1305 has a front 1307 and a back 1308, the front 1307 transitioning from the tooth space 1306 to the tooth 1305, and the rear side moving in the direction of the arrow 1303 the transition between the teeth 1305 and tooth gap 1306.
- the tooth structure 1304 shown on the left in FIG. 7 is now referred to as the first tooth structure and the next tooth structure in the middle of FIG. 7 as the second tooth structure 1304.
- the rotor is constructed so that a tooth structure 1304 is associated with each pair of permanent magnets 1301, 1321.
- sensors 1311, 1312, 1313 and tooth structures 1304 when the rotor 1300 moves in the direction of the arrow 1303, it behaves so that a fixed sequence of signals from the three sensors occurs.
- the sensors 1311, 1312, 1313 provide a logical one whenever a tooth 1305 is located immediately in front of them and a logical zero when a tooth gap 1306 is located in front of the sensors 1311, 1312, 1313.
- the sensors 1311 and 1312 output a logical one and the sensor 1313 outputs a logical zero.
- the signal level changes as soon as the sensor 1312 is beyond the backside 1308 of the first tooth.
- the sensor 1311 is still located opposite the tooth 1305, while the sensors 1312 and 1313 are both located opposite the tooth space 1306. The sensors therefore provide the output signal 100.
- the sensor 1313 then exceeds the front 1307 of the second tooth 1305 and the signal from the sensors then changes to the value 101. If then the rotor 1300 continues to move, then both sensors 1311, 1312 located above the tooth space 1306 of the first tooth structure and the third sensor 1313 is in front of the tooth 1305 of the second tooth structure. The sensors thus output the signal 001. In the further movement then follow the signals 011 and in a further movement further the signal 010. When the rotor 1300 then moves further, the output of the signal 110 is again, in which case the sensors are arranged in front of the second tooth structure 1304, as in the figure 7 with respect to the first tooth structure 1304 shown.
- this signal sequence is repeatedly output, namely 110, 100, 101, 001, 011, 010.
- this signal sequence will occur in reverse order, whereby a movement of the electric motor in one direction or the other direction can be clearly distinguished.
- the further processing of the signals of the three sensors 1311, 1312 1313 is carried out by the signal processing device 200 in a similar manner as already described for the signals of the sensor 104. Whenever a signal from the sensors 1311, 1312 or 1313 changes its signal level, the storage means reads in the time at which the signal was received from the timer 201 and stores this time in the memory 206.
- Storage in the memory 206 takes place in a predetermined manner
- Order ie, for example, the storage of the time of receipt of the signal transition from 110 to 100 takes place in memory location 2061, which then makes it clear that the storage of the time at which the signal transition from 100 to 101, then takes place in memory location 2062.
- the sensors 1311, 1312 and 1313 have a total of only 6 states (the states 000 and 111 do not occur)
- a complete further movement of the rotor 1300 by a pole pair 1301, 1321 is stored by a storage on only 6 memory locations. But to investigate other influences on the speed, it may also be useful to see a larger number of memory locations.
- the stored times are, as already described for FIG. 5, managed by a corresponding address pointer 205.
- the direction of rotation of the electric motor can be determined for each signal change. This information can be used to count according to the address pointer 205 in one direction or the other. Based on the stored time points, a plurality of position pulses 150 are generated in the DPLL 203, which then respectively indicate the position of the electric motor.
- a plurality of position pulses 150 are generated in the DPLL 203, which then respectively indicate the position of the electric motor.
- it is not necessary to map a complete movement of the rotor 1300, but it is only necessary to know the position of a pole pair for the purpose of controlling the electric motor, since the rotor is again rotated by one pole pair during a rotation of the rotor Starting position exists.
- a further address pointer 30 and corresponding memory locations 301, 302, 303, 304 may also be provided for the electric motor. In contrast to the evaluation of crankshaft signals, however, no information relating to the expected teeth but information relating to manufacturing tolerances of the encoder wheel of the electric motor or the arrangement of the three sensors 1311, 1312, 1313 are stored in these memory locations.
- This information includes information on how many position pulses 150 are to be expected until the next signal transition.
- Manufacturing tolerances can be based on the periodically successive signal sequence of the 6 possible states of the sensors, for example, could differ due to manufacturing fluctuations at a continuous speed, the time from transition 110 to 100 to the transition from 011 to 010. These deviations are then repeated every 6 signal changes and can be corrected by means of corresponding correction values on the 6 memory locations 301, 302... 306. Further correction values may relate to the manufacturing tolerances of the entire rotor, for example deviations on the tooth structures 1304, which only affect one point on the entire rotor 1300.
- memory locations for the entire rotor 1300 must then be provided for these deviations and a synchronization of the further address pointer 30 with the rotor 1300 must take place.
- This may alternatively be done either by another sensor, or by marking a location of the rotor 1300 in a manner similar to that in FIG. 1 or by a learning operation.
- Such a learning process evaluates, in particular, operating phases of the electric motor with a relative synchronization of the engine, for example, an operating phase in which a vehicle operated by the electric motor rolls out. In such phases, it can be learned which differences exist with respect to the arrival of the signal transitions, and corresponding correction information can be stored in the memory locations 301, 302, 303 and so on. This information is then used by DPLL to output different numbers of position pulses 150, depending on when the arrival of the next signal change is expected.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Position Or Direction (AREA)
Abstract
Description
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Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/637,106 US9599453B2 (en) | 2010-03-31 | 2011-03-31 | Device and method for processing signals which represent an angular position of a motor shaft |
| JP2013501850A JP5420108B2 (ja) | 2010-03-31 | 2011-03-31 | モータの軸の角度位置を表す信号を処理するための装置と方法 |
| CN201180017222.9A CN102893132B (zh) | 2010-03-31 | 2011-03-31 | 用于处理代表发动机的轴的角位置的信号的设备和方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010003526.2 | 2010-03-31 | ||
| DE102010003526.2A DE102010003526B4 (de) | 2010-03-31 | 2010-03-31 | Vorrichtung und Verfahren zur Verarbeitung von Signalen, die eine Winkelstellung einer Welle eines Motors repräsentieren |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2011121069A2 true WO2011121069A2 (de) | 2011-10-06 |
| WO2011121069A3 WO2011121069A3 (de) | 2012-01-05 |
Family
ID=44584870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2011/055004 Ceased WO2011121069A2 (de) | 2010-03-31 | 2011-03-31 | Vorrichtung und verfahren zur verarbeitung von signalen, die eine winkelstellung einer welle eines motors repräsentieren |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9599453B2 (de) |
| JP (1) | JP5420108B2 (de) |
| CN (1) | CN102893132B (de) |
| DE (1) | DE102010003526B4 (de) |
| WO (1) | WO2011121069A2 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010003521A1 (de) * | 2010-03-31 | 2011-10-06 | Robert Bosch Gmbh | Modulare Struktur zur Datenverarbeitung |
| EP2372490A1 (de) * | 2010-03-31 | 2011-10-05 | Robert Bosch GmbH | Schaltungsanordnung für ein Datenverarbeitungssystem und Verfahren zur Datenverarbeitung |
| JP5708477B2 (ja) | 2011-12-27 | 2015-04-30 | 株式会社デンソー | エンジン制御装置 |
| EP2999943B1 (de) * | 2013-06-20 | 2022-04-06 | Allegro MicroSystems, LLC | System und verfahren zur bereitstellung einer für einen signaturbereich in einem ziel und eine drehrichtung repräsentativen signalcodierung |
| US11199426B2 (en) * | 2019-02-08 | 2021-12-14 | Honda Motor Co., Ltd. | Systems and methods for crankshaft tooth encoding |
| US11162444B2 (en) * | 2019-02-08 | 2021-11-02 | Honda Motor Co., Ltd. | Systems and methods for a crank sensor having multiple sensors and a magnetic element |
| US11181016B2 (en) | 2019-02-08 | 2021-11-23 | Honda Motor Co., Ltd. | Systems and methods for a crank sensor having multiple sensors and a magnetic element |
| US11131567B2 (en) | 2019-02-08 | 2021-09-28 | Honda Motor Co., Ltd. | Systems and methods for error detection in crankshaft tooth encoding |
| US11959820B2 (en) | 2021-03-17 | 2024-04-16 | Honda Motor Co., Ltd. | Pulser plate balancing |
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| DE19933844A1 (de) | 1999-07-20 | 2001-01-25 | Bosch Gmbh Robert | Einrichtung zur Erkennung des Rückdrehens eines rotierenden Teils einer Brennkraftmaschine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2621179C2 (de) | 1976-05-11 | 1982-04-29 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Schaltungsanordnung zur Erfassung der Drehrichtung rotierender Teile |
| GB2121252A (en) * | 1982-05-18 | 1983-12-14 | Marconi Co Ltd | Apparatus for indicating the position of a member |
| JPS59157544U (ja) * | 1983-04-01 | 1984-10-23 | マツダ株式会社 | 車両の機関作動状態検出装置 |
| US4914437A (en) * | 1986-12-04 | 1990-04-03 | Regents Of The University Of California | Encoder for measuring both incremental and absolute positions of moving elements |
| US5137104A (en) * | 1987-10-06 | 1992-08-11 | Nissan Motor Company, Limited | System and method for automatically controlling vehicle speed to desired cruise speed |
| US4906992A (en) * | 1988-02-22 | 1990-03-06 | Dynamics Research Corporation | Single track absolute encoder |
| GB8911809D0 (en) | 1989-05-23 | 1989-07-12 | Smith Ind Plc | Position transducers |
| CN1188663C (zh) * | 1998-07-23 | 2005-02-09 | 株式会社安川电机 | 绝对编码器 |
| US20040129869A1 (en) * | 2000-10-22 | 2004-07-08 | Lennart Stridsberg | Position transducer |
| JP4168907B2 (ja) * | 2003-10-29 | 2008-10-22 | 株式会社デンソー | エンジン制御装置 |
| JP2005283274A (ja) * | 2004-03-29 | 2005-10-13 | Fujinon Corp | 位置検出装置 |
| US7298678B2 (en) * | 2004-08-19 | 2007-11-20 | Seagate Technology Llc | Rotating recorder with dual encoder arrangement having eccentricity compensation |
| CN101251391A (zh) * | 2008-04-10 | 2008-08-27 | 中国科学院长春光学精密机械与物理研究所 | 一种光电轴角编码器信号幅值和相位自动补偿电路 |
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2010
- 2010-03-31 DE DE102010003526.2A patent/DE102010003526B4/de active Active
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2011
- 2011-03-31 US US13/637,106 patent/US9599453B2/en active Active
- 2011-03-31 JP JP2013501850A patent/JP5420108B2/ja active Active
- 2011-03-31 CN CN201180017222.9A patent/CN102893132B/zh active Active
- 2011-03-31 WO PCT/EP2011/055004 patent/WO2011121069A2/de not_active Ceased
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19933844A1 (de) | 1999-07-20 | 2001-01-25 | Bosch Gmbh Robert | Einrichtung zur Erkennung des Rückdrehens eines rotierenden Teils einer Brennkraftmaschine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5420108B2 (ja) | 2014-02-19 |
| US9599453B2 (en) | 2017-03-21 |
| US20130082693A1 (en) | 2013-04-04 |
| DE102010003526A1 (de) | 2011-10-06 |
| WO2011121069A3 (de) | 2012-01-05 |
| CN102893132A (zh) | 2013-01-23 |
| CN102893132B (zh) | 2015-05-20 |
| DE102010003526B4 (de) | 2024-05-02 |
| JP2013524191A (ja) | 2013-06-17 |
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