WO2003100353A1 - Detecteur d'angle de rotation et son procede de correction de temperature - Google Patents
Detecteur d'angle de rotation et son procede de correction de temperature Download PDFInfo
- Publication number
- WO2003100353A1 WO2003100353A1 PCT/JP2003/006630 JP0306630W WO03100353A1 WO 2003100353 A1 WO2003100353 A1 WO 2003100353A1 JP 0306630 W JP0306630 W JP 0306630W WO 03100353 A1 WO03100353 A1 WO 03100353A1
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- WIPO (PCT)
- Prior art keywords
- voltage
- rotation angle
- output voltage
- rotor
- reference timing
- Prior art date
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Classifications
-
- 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
- G01D5/14—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 the magnitude of a current or voltage
- G01D5/20—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 the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
- G01D5/204—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 the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
- G01D5/2073—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 the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by movement of a single coil with respect to two or more coils
- G01D5/208—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 the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by movement of a single coil with respect to two or more coils using polyphase currents
-
- 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
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
- G01D3/032—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure affecting incoming signal, e.g. by averaging; gating undesired signals
Definitions
- the present invention relates to a rotation angle detection device and a temperature correction method thereof, and particularly to a derivation method thereof.
- a rotation angle detecting device that detects a rotation angle using a conventional resolver
- a conventional example there is, for example, one described in Japanese Patent Application No. 2002-127271 (hereinafter referred to as a conventional example).
- the conventional example as shown in Fig. 5, when the excitation coil 122, the cos-phase coil 128, and the sin-phase coil 130 are grounded using a common ground wire 144, the sin-phase
- the terminal 1 36 of the coil 130 has the impedance 1 4 4 of the ground wire 1 4 6 and the exciting current It is described that a voltage on which an AC bias voltage caused by the above is superimposed is output.
- a conventional example discloses the following rotation angle detecting device. First, slowly rotate the handle for one revolution, sample the sin phase voltage, and store it in RAM. Next, from the data stored in RAM, data near the maximum peak value (handle angle: 90 degrees) and data near the maximum bottom value (handle angle: 270 degrees) are selected at four points in one sin phase voltage cycle. Add them sequentially. Then, when each of the values of the added data group is divided by 2, only the bias voltage can be derived. By subtracting this bias voltage from the sin phase voltage, the rotation angle voltage is obtained. The rotation angle can be derived from the rotation angle voltage.
- the present invention has been made in view of the unsolved problems of the conventional example described above, and aims to provide a highly accurate rotation angle detection device which eliminates a rotation angle error due to an ever-changing temperature change. I have. Disclosure of the invention
- an exciting coil having a rotating rotor, fixed to the rotor, an AC exciting current applied to one end, and an earth wire connected to the other end, and fixed around the rotor.
- the output voltage is taken out from one end, and the ground wire is connected to the other end, and the impedance of the ground wire and the exciting current are applied to the AC rotation angle voltage whose amplitude increases and decreases depending on the rotation angle of the rotor.
- a rotation angle detection device having a stator coil that outputs a voltage superimposed on the AC bias voltage caused by the temperature, the data required to calculate the value of the temperature-dependent element in relation to the elapsed time from the reference timing
- a rotation angle voltage detection means for obtaining the AC rotation angle voltage by subtraction means for subtracting data stored in the storage means; From a Baiasu detecting means for data Ru sought by connexion the AC Baiasu voltage adding means for adding is, with the rotation angle voltage detecting means and said Baiasu detecting means
- the phase difference between the amplitude value of the AC rotation angle voltage and the reference timing of the AC rotation angle voltage and the phase difference between the amplitude value of the AC bias voltage and the reference timing of the AC bias voltage are obtained from the values sampled at least at two different points. It is a rotation angle detection device provided with means.
- one end of the stator coil when the rotor rotates with respect to the stator coil, one end of the stator coil has an AC rotation angle voltage whose amplitude increases and decreases depending on the rotation angle of the rotor, an impedance of the ground wire and an exciting current. This causes an output voltage on which the AC bias voltage resulting from the superposition is superimposed.
- the data storage means which stores data necessary for calculating the value of the temperature-dependent element, calculates the AC rotation angle voltage and the AC bias voltage in relation to the time elapsed from the reference timing. Necessary data is stored.
- the data storage means sequentially samples and stores the output voltage when the rotor rotates. I do.
- the rotation angle voltage detection means obtains an AC rotation angle voltage by subtracting the first output voltage and the second output voltage having the same elapsed time from the reference timing of the data stored in the storage means by the subtraction means.
- the bias detection means obtains an AC bias voltage by adding the first output voltage and the second output voltage having the same elapsed time from the reference timing of the data stored in the storage means by an adding means.
- the amplitude value of the AC rotation angle voltage calculated by the rotation angle voltage detection means and the bias detection means using at least two different sampled values, the phase difference of the AC rotation angle voltage with respect to the reference timing, and the amplitude of the AC bias voltage Determine the value and the phase difference between the AC bias voltage and the reference timing.
- the momentary moment is obtained.
- a highly accurate rotation angle that is not affected by a changing temperature change can be detected.
- the output voltage when the rotor is rotated is sequentially sampled and stored, and a maximum value among the stored output voltage groups is provided.
- Means for specifying the first output voltage group for at least one cycle including the peak value, and means for specifying the second output voltage group for at least one cycle including the maximum bottom value among the stored output voltage groups Means for sequentially subtracting and adding the first output voltage and the second output voltage of the specified first output voltage group and the second output voltage group, which are equal in elapsed time from a reference timing. It is.
- the rotation angle voltage also has a peak value at the electrical angle at which the output voltage obtained by superimposing the bias voltage on the rotation angle voltage has a peak value, and the rotation angle voltage also has a bottom value at the electrical angle having a bottom value. Therefore, the first output voltage group for at least one cycle including the maximum peak value is specified from among the stored output voltage groups, and the first output voltage group for at least one cycle including the maximum bottom value among the stored output voltage groups is specified.
- the second output voltage group is specified, and the first output voltage and the second output voltage having the same elapsed time from the reference timing are sequentially subtracted and added to obtain the AC rotation angle voltage and the AC bias voltage.
- the third invention is a rotary motor that outputs a voltage in which an AC bias voltage resulting from the impedance of an earth wire and an exciting current is superimposed on an AC rotation angle voltage whose amplitude increases and decreases depending on the rotation angle of the rotor.
- Temperature to temperature that affects the output voltage of the angle detector A first step of sequentially sampling the output voltage while rotating a rotor, and a first output for at least one rotation angle cycle including a maximum peak value in a sampled output voltage group.
- a temperature correction method comprising:
- the output voltage is sequentially sampled while rotating the rotor, so that the first output voltage for at least one cycle including the maximum peak value in the sampled output voltage group is obtained.
- Groups can be identified.
- the second output voltage group for at least one cycle including the maximum bottom value among the sampled output voltage groups can be specified.
- the AC rotation angle voltage can be obtained by sequentially subtracting the first output voltage and the second output voltage having the same elapsed time from the reference timing.
- the AC bias voltage can be obtained by sequentially adding the first output voltage and the second output voltage having the same elapsed time from the reference timing.
- the amplitude value of the AC rotation angle voltage, the phase difference with respect to the reference timing of the AC rotation angle voltage, the amplitude value of the AC bias voltage, and the AC The phase difference between the bias voltage and the reference timing can be obtained.
- FIG. 1 is a configuration diagram of an electric power steering system to which a torque detection device according to an embodiment of the present invention is applied
- FIG. 2 is a block diagram of the torque detection device
- FIG. FIG. 4 is a graph of an output voltage at an electrical angle of 360 ° rotation
- FIG. 4 is a diagram showing a maximum peak value and a maximum bottom value and respective voltage waveforms
- FIG. 5 is a conventional rotation angle detection device. It is a block diagram of. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows the configuration of an electric power steering system 10 to which the present invention is applied.
- This system 10 comprises a first rotation angle detection device mainly composed of an ECU 20 and a first resolver 15 s, and a second rotation angle detection device mainly composed of an ECU 20 and a second resolver 16 s. It consists of a device.
- the ECU 20, the first resonator 15 s and the second resolver 16 s constitute a torque detection device that converts the steering of the driver's steering wheel into a torque value and detects it.
- the handle 11 is connected to one end of a handle shaft 12, and the other end J of the handle shaft 12 is connected to one end of a torsion bar 14.
- the pinion shaft 13 is connected to the other end of the torsion bar 14 via an output shaft.
- the pione of the pinion shaft 13 is aligned with the rack 19.
- the rack mechanism 18 is constituted by the rack 19 and the rack housing 18H.
- the rack mechanism 18 allows the rack 19 to reciprocate in the rack housing 18H in the axial direction.
- One end of a tie rod 21 is attached to each end of the rack mechanism 18.
- One end of a knuckle arm 22 is connected to the other end of the tie rod 21.
- a wheel 23 is connected to the other end of the knuckle arm 22.
- a first resolver 15 s is provided around the lower end of the handle shaft 12 described above.
- the first resonance lever 15 s functions as a first rotation angle detection unit that detects the first rotation angle ⁇ 1 of the handle shaft 12.
- a second resolver 16 s is provided around the lower end side of the torsion bar 14.
- the second resolver 16 s functions as a second rotation angle detection unit that detects the second rotation angle 02 of the pinion 13.
- the first resolver / reservoir 15 s and the second resolver 16 s are electrically connected to the ECU 20.
- ECU 20 first resolver
- the torque detector 30 is constituted by 15 s and the second resolver 16 s.
- the ECU 20 that constitutes the torque detection device operates the steering wheel 11 from the first rotation angle 01 detected by the first resolver 15 s and the second rotation angle ⁇ 2 detected by the second resolver 16 s.
- ⁇ ⁇ ⁇ ( ⁇ 1- ⁇ 2).
- Note the kappa tau is a spring constant of the torsion bar 1 4.
- the ECU 20 is connected to the motor ⁇ , converts the calculated torque value T into a command current using a predetermined torque Z current value conversion map, and performs PWM (pulse width modulation) control through a current control unit. More specific configurations of the torque detectors 30, 15 s and 16 s will be described later.
- the motor M transmits the generated assist torque to the rack mechanism 18 via the speed reducer 17.
- the steering shaft 12 rotates.
- the pinion shaft 13 also rotates via the torsion bar 14.
- the rack 19 corresponding to the pinion moves in the axial direction, and the running direction of the wheel 23 changes via the tie rod 21 and the knuckle arm 22.
- the torque generated by the driver steering the handle 11 is detected by the torque detectors 30, 15 s and 16 s.
- the ECU 20 constituting the torque detection device controls the motor M based on the torque.
- the ECU 20 controls the motor M to generate a small assist torque. If the steering torque detected by the torque detection device 30 is large, the ECU 20 controls the motor M to generate a large assist torque. The assist torque generated by the motor M is transmitted to the rack mechanism 18 to assist the movement of the rack 19. Therefore, the driver can steer the steering wheel 11 with a small force.
- FIG. 2 shows a block diagram of the torque detector 30.
- the torque detector 30 includes a first rotation angle detector including the ECU 20 and the first resolver 15 s, and a second rotational angle detector including the ECU 20 and the second resolver 16 s. Includes rotation angle detector.
- the ECU 20 includes a CPU 52, ROMs 56, ⁇ 58, and EEPR0M (electrically erasable ROM) 59 connected to the CPU 52 via an internal bus 53.
- the CPU 52 has ports such as input ports 52b to 52e and output ports 52a. Input port 5 2 b to 5 2 e is connected to an A / D converter inside the CPU 52, and the analog signal is converted to a digital signal and processed by the CPU 52.
- the output port 52a is connected to a DZA converter inside the CPU 52, and the digital signal is converted into an analog signal, which is output to the first resolver 15s, the second resolver 16s, and the motor M. .
- the R0M56 stores a program for performing a temperature correction derivation process described later, a torque calculation program, and the like.
- the first resolver 15 s includes a first rotor 31, a first excitation coil 32, a first sin phase coil (stator coil) 34, an l-cos phase coil (stator coil) 36, and the like.
- the second resolver 16 s includes a second rotor 41, a second excitation coil 42, a second sin phase coil (steer coil) 43, a second cos phase coil (steer coil) 44, and the like.
- the first rotor 31 has a first excitation coil 32. As the first rotor 31 rotates, the first exciting coil 32 also rotates.
- the rotor coil groups are arranged so that the electrical angle is four times the mechanical rotation angle of the first rotor 31. Have been.
- the electric angle is four times.
- four pairs of N and S poles are configured.
- mechanically high speed is performed electrically with gears and the like, and the resolution of the rotation angle is 4 times.
- rotation angle means this electrical angle unless otherwise specified.
- the first exciting coil 32 of the first resolver 15 s is wound around a slot of the first rotor 31.
- One end of the first exciting coil 32 is supplied with an AC exciting voltage (formula (1) described later) from the output port 52 a of the CPU 52, and the other end thereof is connected to a common ground wire 46.
- the second exciting coil 42 of the second resolver 16 s is wound around a slot of the second rotor 41. According to the ⁇ f rule, an AC excitation voltage (formula (1) described later) is applied to the second excitation coil 42 from the output port 52a of the CPU 52, and a common ground wire 46 is connected to the other end. It is connected.
- the exciting coils 32, 42 constitute a transformer together with coils (not shown) built in the rotors 31, 41. Illustration The excitation voltage is applied to the excitation coil groups 32 and 42 by the voltage generated in the non-activated coil.
- a non-contact type brush is described as a method of applying a non-contact type transformer. May be used.
- the excitation voltage is expressed by equation (1).
- the exciting current is expressed by equation (2).
- ⁇ amplitude of excitation voltage (volt)
- ⁇ angular velocity of excitation voltage (rad / s)
- the first cos phase coil 36 of the first resolver 15s is wound concentrically with the first rotor 31 in a slot of a stator fixed around the first rotor 31.
- the first cos phase voltage generated at one end is input to the input port 52b of the CPU 52, and the other end is connected to the common ground wire 46.
- the first cos phase voltage (Equation (5) described later) is an AC rotation angle voltage whose amplitude increases and decreases depending on the cos value of the rotation angle ⁇ 1 of the first rotor 31 (Equation (3) ) Is a voltage obtained by superimposing the impedance 48 of the common ground line 46 and the AC bias voltage (Equation (4) described later) caused by the exciting current.
- the rotation angle voltage of the first cos phase voltage is expressed by equation (3).
- Vcosl EK (T) sin ( ⁇ + ⁇ ( ⁇ )) cos ( ⁇ 1) (3)
- the bias voltage is expressed by equation (4).
- Vbias R (T) Isin ( ⁇ + ⁇ ( ⁇ )) (4)
- Equation (5) The lcos phase voltage is expressed by equation (5), which is obtained by adding equation (3) and equation (4).
- VcoslT EK (T) sin ( ⁇ + ⁇ ( ⁇ )) cos ( ⁇ 1) + R ( ⁇ ) Isin ( ⁇ +] 3 ( ⁇ ))
- ⁇ ( ⁇ ) transformer efficiency (unitless)
- a (T) phase difference (rad) of the first cos phase voltage with respect to the excitation voltage
- ⁇ 1 first rotation angle (rad) of the first rotor
- R (T) This is the impedance ( ⁇ ) of the earth conductor.
- the first sinusoidal coil 34 of the first resolver 15 s is placed concentrically with the first rotor 31 and in the slot of the stator fixed around the first rotor 31, and the first cos It is wound around the phase coil 36 with a phase difference of 90 degrees in electrical angle.
- the first sin phase coil 34 the first sin phase voltage generated at one end is input to the input port 52c of the CPU 52, and the other end is connected to the common ground line 46.
- the lsin phase voltage (Equation (7) described later) is an AC rotation angle voltage whose amplitude increases and decreases depending on the sin value of the rotation angle 01 of the first rotor 31 (Equation (6) described later).
- this is a voltage obtained by superimposing the impedance 48 of the common ground line 46 and the AC bias voltage (Equation (4) described above) caused by the exciting current.
- Vsinl EK (T) sin ( ⁇ + ⁇ ( ⁇ )) sin ( ⁇ l) (6)
- Equation (7) The l-sin phase voltage is expressed by equation (7), which is obtained by adding equation (6) and equation (4).
- VsinlT EK (T) sin ( ⁇ + ⁇ ( ⁇ )) sin ( ⁇ 1) + R ( ⁇ ) lsin ( ⁇ + ⁇ ( ⁇ ))
- the second cos phase coil 44 and the second sin phase coil 43 of the second resolver 16 s are also connected to the common ground wire 46.
- the other basic configuration is the same as that of the first resolver 15s, and thus the description is omitted.
- the first excitation coil 31 of the first resolver 15 s the lco 5-phase coil 36, the lsin phase coil 34, the second excitation coil 42 of the second resolver 16 s, and the second cos phase coil 44. Since the second sin phase coil 43 is connected to the common ground wire 46 and grounded, the number of wires can be greatly reduced as compared to the case where it is connected to six separate ground wires.
- the correction process may be performed at a certain time interval, or may be performed when a trigger for starting the temperature correction process is performed.
- the driver rotates the handle 11 shown in FIG. 1 to rotate the electrical angle ⁇ 1 of the first rotor 31 from 0 to 360 degrees.
- the CPU 52 samples the first sin phase voltage of the first resolver 15 s at a sampling interval of 50 ⁇ s, and stores the data in the RAM 58.
- the AC waveform whose amplitude increases and decreases depending on sin ( ⁇ 1) as shown in Fig. 3. Becomes However, the waveform is actually much shorter than the waveform shown in Fig. 3. For example, assuming that the rotation frequency of the excitation voltage is 5 kHz, the cycle of the first sin phase voltage is 200 S, and if it takes one second for one rotation of the electric angle of the steering wheel to be actually rotated, 500 cycles are required for one cycle of the steering wheel. A pulse wave will be included.
- the CPU 52 performs a process of detecting a voltage data group including the maximum peak value among the first sin phase voltage data group.
- the rotation angle voltage also has a peak value.
- a voltage data group in which the electrical angle 01 falls within the range (1 degree) of 89.5 degrees to 90.5 degrees is sampled.
- the CPU 52 performs a process of detecting a voltage data group including the maximum bottom value from the first sin phase voltage data group.
- the rotation angle voltage also has the bottom value.
- a voltage data group whose electrical angle 01 falls within a range (1 degree) of 269.5 degrees to 270.5 degrees is sampled.
- data in the range L2 in Fig. 3 is sampled.
- Figures 4 (a) and 4 (b) are graphs with time on the horizontal axis and voltage on the vertical axis.
- Fig. 4 (a) shows the first sin phase voltage data group near the maximum peak value, and the rotation angle voltage and bias voltage that make up this data group.
- Fig. 4 (b) shows the first sin phase voltage data group near the maximum bottom value, and the rotation angle voltage and bias voltage that compose it.
- FIG. 4 is the period of the first sin phase voltage, which is 200 ⁇ s in the present embodiment.
- ⁇ is the sampling interval of the first sin phase voltage by the CPU 52, which is 50 ⁇ s in the present embodiment.
- the reference timing is such that the time elapsed from the start of the application of the excitation voltage is a timing that is an integral multiple of the period P.
- the bias voltage including the temperature element is calculated by dividing the added value by 2.
- the time required for the rotational angular velocity constituting the rotational angular voltage calculated by the above means is taken at two points, and the rotational angular voltage value at that time is read.
- the values of two parameters including the temperature element that constitutes the rotation angle voltage are obtained.
- two points of time required for the rotational angular velocity constituting the bias voltage calculated by the above means are taken, and the bias voltage value at that time is read.
- the values of two parameters including the temperature element that constitutes the bias voltage are obtained.
- the above contents can be described by a general formula as follows.
- the general expression (8) for the first sin-phase voltage data group having the maximum peak value and the general expression (9) for the first sin-phase voltage data group having the maximum bottom value are represented by the following expressions.
- Vsinlmax EK (T) sin ( ⁇ + ⁇ ( ⁇ )) sin (90 degrees) + R (T) Isin ( ⁇ + ⁇ (T))
- Vsinlmin ⁇ ( ⁇ ) sin ( ⁇ + ⁇ ( ⁇ )) sin (270 degrees) + R ( ⁇ ) Isin ( ⁇ + ⁇ ( ⁇ ))
- VsinlT is a value taken into the CPU 52 via the input port as the lsin phase voltage.
- ⁇ , ⁇ , and I are values stored in the EEPROM 62, and the temperature-dependent elements K (T), hi (T), R (T), and j3 (T) are also calculated by the above-described calculation. I have.
- This resolver has a configuration in which there is one excitation coil on the rotor side and two output coils on the stator side, but there are two excitation coils on the stator side and output coils on the rotor side. Of course, it may be applied to a resolver having one or two components.
- the rotation angle detection device and the temperature correction method according to the present invention convert the rotation of the steering wheel by the driver into the axial motion of a rack shaft by a rack and pinion mechanism, and convert the axial motion of the rack shaft to a steering force by an electric motor. It is suitable for use in electric power steering systems for automobiles that amplify and assist the vehicle and deflect the wheels via tie rods and knuckle arms.
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/506,679 US7138795B2 (en) | 2002-05-29 | 2003-05-28 | Rotation angle detector and its temperature correcting method |
EP03730652A EP1508783B1 (en) | 2002-05-29 | 2003-05-28 | Rotational angle detector and its temperature correcting method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002155651A JP3953889B2 (ja) | 2002-05-29 | 2002-05-29 | 回転角検出装置とその温度補正方法 |
JP2002-155651 | 2002-05-29 |
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WO2003100353A1 true WO2003100353A1 (fr) | 2003-12-04 |
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PCT/JP2003/006630 WO2003100353A1 (fr) | 2002-05-29 | 2003-05-28 | Detecteur d'angle de rotation et son procede de correction de temperature |
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Country | Link |
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US (1) | US7138795B2 (ja) |
EP (1) | EP1508783B1 (ja) |
JP (1) | JP3953889B2 (ja) |
WO (1) | WO2003100353A1 (ja) |
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CN100439689C (zh) * | 2005-05-18 | 2008-12-03 | 株式会社日立制作所 | 转角检测装置及其方法 |
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US7562591B2 (en) * | 2006-06-26 | 2009-07-21 | KRS Technologies Co. | Steering angle sensor |
JP5041419B2 (ja) * | 2007-12-28 | 2012-10-03 | 東芝機械株式会社 | レゾルバ装置およびレゾルバの角度検出装置とその方法 |
JP5040805B2 (ja) * | 2008-05-19 | 2012-10-03 | 株式会社ジェイテクト | 回転角度検出装置 |
US8115152B1 (en) | 2008-06-03 | 2012-02-14 | ADIC, Inc. | Method of operating a photoconductor in an imaging system, and read-out circuit employing an AC-biased photoconductor |
JP2010048760A (ja) * | 2008-08-25 | 2010-03-04 | Jtekt Corp | レゾルバの異常検出装置および電気式動力舵取装置 |
JP5267031B2 (ja) * | 2008-10-09 | 2013-08-21 | 株式会社ジェイテクト | 電動パワーステアリング装置 |
JP4911271B1 (ja) * | 2010-12-24 | 2012-04-04 | トヨタ自動車株式会社 | トルク検出装置 |
JP6489780B2 (ja) * | 2014-09-25 | 2019-03-27 | アイシン精機株式会社 | 制御装置 |
JP6550793B2 (ja) * | 2015-02-27 | 2019-07-31 | 株式会社ジェイテクト | 温度検出装置及び回転角検出装置 |
JP2018061350A (ja) * | 2016-10-05 | 2018-04-12 | ルネサスエレクトロニクス株式会社 | 半導体装置、モータ制御システム、及び半導体装置の制御方法 |
CN110987027B (zh) * | 2019-11-14 | 2022-03-04 | 北京航天时代光电科技有限公司 | 一种双通道多对极旋转变压器的组合解算方法和系统 |
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JP2515891B2 (ja) * | 1989-09-20 | 1996-07-10 | 株式会社日立製作所 | 角度センサ及びトルクセンサ、そのセンサの出力に応じて制御される電動パワ―ステアリング装置 |
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JP3630410B2 (ja) * | 2001-05-22 | 2005-03-16 | 三菱電機株式会社 | 位置検出装置および異常検出装置 |
JP3982319B2 (ja) | 2002-04-26 | 2007-09-26 | 株式会社ジェイテクト | 回転角検出装置の補正に用いるバイアス電圧の導出方法 |
-
2002
- 2002-05-29 JP JP2002155651A patent/JP3953889B2/ja not_active Expired - Fee Related
-
2003
- 2003-05-28 US US10/506,679 patent/US7138795B2/en not_active Expired - Lifetime
- 2003-05-28 WO PCT/JP2003/006630 patent/WO2003100353A1/ja active Application Filing
- 2003-05-28 EP EP03730652A patent/EP1508783B1/en not_active Expired - Lifetime
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EP0772025A1 (en) | 1995-10-30 | 1997-05-07 | Atsutoshi Goto | Method for phase detection, for use in a position detection system |
JP2000283861A (ja) * | 1999-03-30 | 2000-10-13 | Toyoda Mach Works Ltd | トルク検出装置 |
EP1054238A2 (en) * | 1999-05-19 | 2000-11-22 | Atsutoshi Goto | Method and apparatus for detecting position using phase-shifted signals |
EP1090699A2 (en) * | 1999-10-07 | 2001-04-11 | Murata Kikai Kabushiki Kaisha | Bending machine and its operation method |
JP2002127173A (ja) | 2000-10-23 | 2002-05-08 | Neoex Lab Inc | 中空構造物の補強具 |
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Cited By (1)
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CN100439689C (zh) * | 2005-05-18 | 2008-12-03 | 株式会社日立制作所 | 转角检测装置及其方法 |
Also Published As
Publication number | Publication date |
---|---|
US7138795B2 (en) | 2006-11-21 |
EP1508783A4 (en) | 2005-12-28 |
EP1508783B1 (en) | 2011-12-28 |
US20050127280A1 (en) | 2005-06-16 |
EP1508783A1 (en) | 2005-02-23 |
JP3953889B2 (ja) | 2007-08-08 |
JP2003344109A (ja) | 2003-12-03 |
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