JP2010160058A - System and method for correcting rotation balance - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable detection of a fixed direction of a correcting object part to the rotating shaft at low cost, to attain a desired amount of cutting by performing correction in accordance with the fixed direction and thus to perform accurate correction of rotation balance. <P>SOLUTION: This system for correcting the rotation balance includes a magnetometric sensor which is installed opposite to the shaft end face of the rotating shaft magnetized to be bisected into an N pole and an S pole, an acceleration sensor which is installed at a rotatory support supporting a high-speed rotation body so that it rotates at a high speed, a balance operation processing part which calculates the amount of correction and the angle of correction of the correcting object part, based on output signals of the magnetometric sensor and the acceleration sensor, and a balance correction working part which performs corrective working of the correcting object part, based on the amount of correction, after the angle of rotation of the rotating shaft is positioned based on the angle of correction. The balance operation processing part corrects at least one of the amount of correction and the angle of correction, according to the relation between the direction of magnetization at the shaft end face of the rotating shaft and the fixed direction of the correcting object part to the rotating shaft. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotation balance correction apparatus and method for correcting the rotation balance of a high-speed rotating body.

Conventionally, in a high-speed rotating machine such as a vehicle supercharger or a gas turbine, it is common to correct the rotational balance of the high-speed rotating body before shipment in order to suppress vibration during actual operation.
Such correction of the rotation balance is performed by correcting (cutting) a part of a correction target portion (for example, a nut fixed to the rotation shaft) that rotates integrally with the rotation shaft of the high-speed rotating body. The correction amount (cutting amount) and the correction angle (cutting direction) of the correction target portion are determined by detecting the vibration component of the high-speed rotating body with the acceleration sensor while rotating the high-speed rotating body at a speed close to the actual operation and rotating the high-speed rotating body. The rotation angle of the high-speed rotating body is detected by a sensor and is calculated based on the relationship between the vibration component and the rotation angle of these high-speed rotating bodies (for example, see Patent Document 1 below).

JP 2002-39904 A

 Hereinafter, a specific example of the method for correcting the rotational balance of the high-speed rotating body will be described with reference to FIG. First, as shown in FIG. 5, a correction amount (cutting amount) and a correction angle (cutting amount) of a hexagon nut 12 which is a correction target portion fixedly installed so as to rotate integrally with the rotary shaft 11 of the high-speed rotating body 10. Angle). Specifically, in a state where the high-speed rotating body 10 is rotated at a speed close to the actual operation, an acceleration signal corresponding to the vibration of the rotating support 13 generated by the rotation imbalance is generated using the acceleration sensor 20, and By detecting the marker applied to the outer peripheral surface of the rotating shaft 11 using the optical sensor 30, one pulse signal is generated for each rotation.

  Then, the balance calculation processing unit (not shown) calculates the rotation speed and rotation angle based on the pulse signal output from the optical sensor 30, and the rotation angle at a predetermined correction rotation speed (for example, rotation speed close to actual operation). The cutting amount and cutting angle of the hexagon nut 12 are calculated based on the relationship between the acceleration signal and the acceleration signal (that is, the vibration component).

 After the calculation of the cutting amount and the cutting angle of the hexagon nut 12 is completed in this way, the high-speed rotating body 10 is stopped, and a cutting motor (not shown) or a servo motor for finely adjusting the rotation angle of the rotary shaft 11 is used. The balance correction processing unit cuts the hexagon nut 12 based on the cutting amount and the cutting angle to correct the rotational balance. Specifically, after the origin of the rotation angle of the rotary shaft 11 is returned, the rotation angle is positioned at the cutting angle with the origin position as a reference, and the moving amount corresponding to the cutting amount is cut from the end face of the hexagon nut 12. The hexagon nut 12 is cut by advancing the drill in the depth direction of the hexagon nut 12.

 At this time, as shown in FIG. 6, depending on the fixed orientation of the hexagon nut 12 with respect to the rotation shaft 11 (the orientation of a straight line connecting the rotation center and the apex of the hexagon nut 12), the amount of cutting can be performed even at the same cutting angle. Therefore, a nut orientation detection sensor 40 for detecting the fixed orientation of the hexagon nut 12 is provided, and a desired cutting amount is realized by correcting the cutting angle according to the fixed orientation of the hexagon nut 12. Correct rotation balance. For this reason, it is necessary to provide the nut orientation detection sensor 40 for detecting the fixed orientation of the hexagon nut 12, which increases the cost of parts.

  The present invention has been made in view of the above-described circumstances, and can detect a fixed orientation with respect to the rotation axis of the correction target portion at a low cost, and perform a correction according to the fixed orientation to obtain a desired cutting amount. An object of the present invention is to provide a rotation balance correction apparatus and method capable of correcting the rotation balance accurately.

 In order to solve the above-mentioned problem, in the present invention, as a first solving means related to the rotation balance correcting device, a correction target portion fixedly installed so as to rotate integrally with the rotating shaft of the high-speed rotating body is corrected. A rotation balance correcting device for correcting the rotation balance of the high-speed rotating body, wherein the magnetic sensor is installed opposite to the shaft end surface of the rotating shaft that is magnetized by being divided into N and S poles; An acceleration sensor installed on a rotation support that supports the high-speed rotation body so as to be capable of high-speed rotation, and a balance for calculating a correction amount and a correction angle of the correction target portion based on output signals of the magnetic sensor and the acceleration sensor An arithmetic processing unit; and a balance correction processing unit that corrects the correction target portion based on the correction amount after positioning the rotation angle of the rotary shaft based on the correction angle, and the balance calculation processing. It is characterized by correcting the magnetizing position, at least one of modifying the angle between the correction amount in accordance with the relationship between the fixed orientation with respect to the rotation axis of the correction object portion in the axial end surface of the rotary shaft.

 Further, as a second solving means related to the rotation balance correcting device, in the first solving means, the balance calculation processing unit calculates the rotation speed of the high-speed rotating body and the rotation angle of the rotating shaft from the output signal of the magnetic sensor. The correction amount and the correction angle of the correction target part are calculated based on the relationship between the rotation angle at a predetermined correction rotation speed and the output signal of the acceleration sensor.

 Further, as a third solving means related to the rotation balance correcting device, in the first or second solving means, based on the output signal of the magnetic sensor, the origin of the rotating shaft before the positioning by the balance correcting processing unit is returned. A reference signal generation unit that generates an origin reference signal necessary for the operation, and the balance correction processing unit performs origin return of the rotating shaft before the positioning based on the origin reference signal.

 Further, as a fourth solving means related to the rotation balance correcting device, in the first solving means, a rotation angle detecting unit for detecting a rotation angle of a rotating shaft based on an output signal of the magnetic sensor is provided, and the balance calculation is performed. The processing unit calculates the rotation speed of the high-speed rotating body from the rotation angle detected by the rotation angle detection unit, and the correction target is based on a relationship between the rotation angle at a predetermined correction rotation speed and an output signal of the acceleration sensor. The correction amount and the correction angle of the part are calculated.

 Further, as a fifth solving means according to the rotation balance correcting device, in the fourth solving means, the balance correcting processing part rotates before the positioning based on the rotation angle detected by the rotation angle detecting part. It is characterized in that the origin return of the axis is performed.

 Further, as a sixth solving means according to the rotation balance correcting device, in the fourth or fifth solving means, the rotation angle detecting unit may obtain the detection result of the rotation angle based on an output signal of the magnetic sensor. It is a resolver / digital converter that outputs the digital data shown.

 Furthermore, in the present invention, as a means for solving the rotational balance correcting method, the rotational balance of the high-speed rotating body is corrected by processing a correction target portion fixedly installed so as to rotate integrally with the rotating shaft of the high-speed rotating body. Is a rotation balance correction method that corrects the output signal of a magnetic sensor placed opposite to the shaft end face of the rotating shaft that is magnetized by being divided into two parts, the N pole and the S pole, and the high-speed rotating body at high speed. A first step of calculating a correction amount and a correction angle of the correction target portion based on an output signal of an acceleration sensor installed on a rotation support body that is rotatably supported, and based on the correction angle, the rotation axis A second step of correcting the correction target portion based on the correction amount after positioning the rotation angle, and in the first step, the magnetization direction on the shaft end surface of the rotating shaft, and the correction Fixed to the rotation axis of the target part And correcting at least one of modifying the angle between the correction amount in accordance with a relationship between the orientation.

 According to the present invention, the fixed azimuth of the correction target portion with respect to the correction angle can be obtained without using the azimuth detection sensor for detecting the fixed azimuth of the correction target portion as in the prior art. That is, the correction according to the fixed orientation of the correction target portion can be performed at a low cost without causing an increase in the component cost, and a desired cutting amount can be realized and an accurate rotation balance correction can be performed.

It is a block block diagram of the rotation balance correction apparatus which concerns on one Embodiment of this invention. It is a schematic diagram which shows the arrangement | positioning relationship with respect to the high-speed rotary body 10 of the magnetic sensor 1 and the acceleration sensor 2 in the rotation balance correction apparatus which concerns on one Embodiment of this invention. FIG. 6 is a schematic diagram showing the relationship between the magnetization orientation on the shaft end surface 11a of the rotating shaft 11 and the fixed orientation of the hexagon nut 12 with respect to the rotating shaft 11. It is a modification of the rotation balance correction apparatus which concerns on one Embodiment of this invention. It is explanatory drawing regarding the rotation balance correction method in the case of detecting the fixed azimuth | direction of the hexagon nut 12 using the azimuth | direction detection sensor 40. FIG. It is explanatory drawing regarding the problem by the variation of the fixed azimuth | direction of the hexagon nut 12. FIG.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block configuration diagram of a rotation balance correcting apparatus according to the present embodiment. As shown in FIG. 1, the rotation balance correcting apparatus according to this embodiment includes a magnetic sensor 1, an acceleration sensor 2, a first amplifier 3, a second amplifier 4, a comparator 5, a balance calculation processing unit 6, and a balance correcting process. It consists of part 7.

  As shown in FIG. 2, such a rotation balance correcting device is configured such that the shaft end surface 11 a is installed in opposition to the shaft end surface 11 a of the rotating shaft 11 that is preliminarily magnetized by dividing it into N and S poles. A hexagon that is fixedly installed so as to rotate integrally with the rotation shaft 11 based on the output signal of the acceleration sensor 2 installed on the sensor 1 and the rotation support 12 that supports the high-speed rotation body 10 so as to be capable of high-speed rotation. The cutting amount (correction amount) and the cutting angle (correction angle) of the nut 12 (correction target portion) are calculated, and the hexagonal nut 12 is corrected according to the cutting amount and the cutting angle to rotate the high-speed rotating body 10. It is to correct the balance.

 The magnetic sensor 1 has two magnetoresistors arranged orthogonally in a plane facing the shaft end surface 11a of the rotating shaft 11, and when the high-speed rotating body 10 rotates, the rotating shaft 11 rotates once (360 °). ) Is output to the first amplifier 3 as a sine wave signal having a period of 1) and a sine wave signal whose phase is shifted by 90 ° with respect to the sine wave signal (that is, a cosine wave signal). The acceleration sensor 2 detects the vibration of the rotary support 12 caused by the rotation imbalance of the high-speed rotary body 10 and outputs an acceleration signal corresponding to the vibration to the second amplifier 4.

  The first amplifier 3 amplifies the sine wave signal and the cosine wave signal input from the magnetic sensor 1, and then outputs the sine wave signal to the comparator 5, and outputs the sine wave signal and the cosine wave signal to the balance calculation processing unit 6. (Details are output to the signal input unit 6a). The second amplifier 4 amplifies the acceleration signal input from the acceleration sensor 2 and outputs it to the balance calculation processing unit 6 (specifically, the signal input unit 6a). The comparator 5 (reference signal generator) rotates at a predetermined voltage value only during a period when the sine wave signal input from the first amplifier 3 is positive, that is, when the rotation angle θ of the rotating shaft 11 is 0 ° to 180 °. A pulse signal (origin reference signal) is generated and output to the balance correction processing unit 7 (specifically, the angle positioning mechanism 7a).

  The balance calculation processing unit 6 calculates the cutting amount and the cutting angle of the hexagon nut 12 based on the sine wave signal and the cosine wave signal that are the output of the magnetic sensor 1 and the acceleration signal that is the output of the acceleration sensor 2. It consists of a signal input unit 6a and a digital calculation unit 6b. The signal input unit 6a is, for example, an A / D converter, and converts a sine wave signal and a cosine wave signal input via the first amplifier 3 and an acceleration signal input via the second amplifier 4 into digital signals. It converts and outputs to the digital calculating part 6b.

The digital calculation unit 6b calculates the rotation speed of the high-speed rotating body 10 from the sine wave signal (or cosine wave signal), and calculates the rotation angle θ of the rotating shaft 11 based on the sine wave signal and the cosine wave signal. (Cutting angle θ = tan ⁻¹ (sin θ / cos θ)), a cutting amount and a cutting angle of the hexagon nut 12 at a predetermined correction rotation speed (for example, rotation speed close to actual operation) are calculated. Furthermore, the digital calculation unit 6b according to the present embodiment has at least one of a cutting amount and a cutting angle according to the relationship between the magnetization direction of the shaft end surface 11a of the rotating shaft 11 and the fixed direction of the hexagon nut 12 with respect to the rotating shaft 11. It has a function to correct.

 The balance correction processing unit 7 corrects the hexagon nut 12 based on the cutting amount and the cutting angle calculated by the balance calculation processing unit 6 (digital calculation unit 6b), and includes an angle positioning mechanism 7a and a correction processing mechanism. 7b. The angle positioning mechanism 7a is a mechanism including a servo motor or the like for finely adjusting the rotation angle θ of the rotating shaft 11 when the rotation is stopped, and the cutting is performed by inputting the rotation angle θ of the rotating shaft 11 from the digital calculation unit 6b. Position at an angle. At this time, the angle positioning mechanism 7a performs origin return of the rotary shaft 11 based on the rotation pulse signal input from the comparator 5 to determine the origin position (rotation angle θ = 0 °), and the origin position The rotation angle θ is positioned at the cutting angle with reference to.

 The correction processing mechanism 7b is a mechanism including a cutting drill for correcting (cutting) the hexagon nut 12, a movement control mechanism of the cutting drill tip, and the like, and is based on a cutting amount input from the digital calculation unit 6b. The hexagon nut 12 is cut by controlling the amount of movement of the drill tip. The correction processing mechanism 7b performs the cutting of the hexagon nut 12 after the positioning of the rotation angle θ by the angle positioning mechanism 7a is completed.

Next, the operation of the rotation balance correcting apparatus according to this embodiment configured as described above will be described.
First, the high-speed rotating body 10 is rotated at a predetermined correction rotational speed. For example, when the high-speed rotating body 10 is a turbine of a vehicle supercharger, the high-speed rotating body 10 is rotated by supplying compressed air. Thus, the mechanism for rotating the high-speed rotating body 10 (compressed air supply device or the like) may be controlled by the rotation balance correction device or may be controlled by another control device.

 When the high-speed rotating body 10 rotates as described above, a sine wave signal having one cycle of one rotation (360 °) of the rotating shaft 11 from the magnetic sensor 1 and a cosine whose phase is shifted by 90 ° with respect to the sine wave signal. While the wave signal is output, the acceleration sensor 2 outputs an acceleration signal corresponding to the vibration generated by the rotation unbalance of the high-speed rotating body 10.

 The sine wave signal and the cosine wave signal, which are the outputs of the magnetic sensor 1, are amplified and digitally converted via the first amplifier 3 and the signal input unit 6a, and then input to the digital operation unit 6b. On the other hand, the acceleration signal that is the output of the acceleration sensor 2 is amplified and digitally converted via the second amplifier 4 and the signal input unit 6a, and then input to the digital operation unit 6b.

 Then, the digital calculation unit 6b calculates the rotation speed of the high-speed rotating body 10 from the sine wave signal, calculates the rotation angle θ of the rotating shaft 11 based on the sine wave signal and the cosine wave signal, and rotates at the corrected rotation speed. The cutting amount and cutting angle of the hexagon nut 12 are calculated based on the relationship between the angle θ and the acceleration signal (vibration component). Here, the digital calculation unit 6b corrects at least one of the cutting amount and the cutting angle in accordance with the relationship between the magnetization direction of the shaft end surface 11a of the rotating shaft 11 and the fixed direction of the hexagon nut 12 with respect to the rotating shaft 11. .

 FIG. 3 is a schematic diagram showing the relationship between the magnetization orientation on the shaft end surface 11a of the rotating shaft 11 and the fixed orientation of the hexagon nut 12 with respect to the rotating shaft 11 (the hexagon nut 12 and the rotating shaft 11 from the shaft end surface 11a side). View). As shown in FIG. 3, for example, the fixed orientation of the hexagonal nut 12 (the hexagonal nut 12 of the hexagonal nut 12 is based on the magnetization orientation on the shaft end surface 11 a when the rotational angle θ of the rotary shaft 11 is 0 ° (origin position). It is assumed that there is an angle deviation Δθ between the magnetization direction and the direction of the straight line connecting the rotation center and the apex.

 In this case, the fixed orientation of the hexagon nut 12 is shifted by Δθ with respect to the rotation angle θ of the rotating shaft 11. As described with reference to FIG. 6, the actual cutting amount varies even at the same cutting angle depending on the fixed orientation of the hexagon nut 12, so that the correction according to the fixed orientation of the hexagon nut 12 with respect to the cutting angle is performed. Need to do. That is, by obtaining the angle deviation Δθ between the magnetization orientation and the fixed orientation of the hexagon nut 12 in advance, the fixed orientation of the hexagon nut 12 with respect to the cutting angle calculated as described above can be known. By correcting the cutting angle according to the fixed azimuth of the square nut 12, it becomes possible to realize a desired cutting amount and correct the rotational balance accurately.

 Specifically, such an angle deviation Δθ is stored in advance in an internal memory or the like of the digital calculation unit 6b, and the digital calculation unit 6b calculates a cutting angle and a cutting amount and then stores them in the internal memory. The fixed azimuth of the hexagon nut 12 with respect to the cutting angle is calculated from the angle deviation Δθ, and the cutting angle is corrected according to the fixed azimuth of the hexagon nut 12. Note that not the cutting angle but the cutting amount may be corrected, and both the cutting angle and the cutting amount may be corrected.

 The cutting angle and the cutting amount corrected in this way are temporarily stored in the internal memory of the digital calculation unit 6b. When the rotation of the high-speed rotating body 10 is stopped and correction processing of the hexagon nut 12 is started, the digital calculation unit 6b outputs the cutting angle read from the internal memory to the angle positioning mechanism 7a, while the internal The cutting amount read from the memory is output to the correction processing mechanism 7b.

 The angle positioning mechanism 7a positions the rotation angle θ of the rotating shaft 11 based on the correction angle input from the digital calculation unit 6b when the rotation of the high-speed rotating body 10 is stopped. At this time, the angle positioning mechanism 7a performs origin return based on the rotation pulse signal input from the comparator 5 to determine the origin position (rotation angle θ = 0 °), and the rotation angle θ based on the origin position. Perform positioning.

 Then, after the positioning of the rotation angle θ by the angle positioning mechanism 7a is completed, the correction processing mechanism 7b corrects the hexagonal nut 12 by controlling the cutting drill based on the cutting amount input from the digital calculation unit 6b. To do. Specifically, the hexagonal nut 12 is cut by moving the cutting drill forward in the depth direction of the hexagonal nut 12 from the end face of the hexagonal nut 12 by a moving amount corresponding to the cutting amount.

 As described above, according to the rotation balance correcting device according to the present embodiment, the hexagon with respect to the cutting angle can be obtained without using the nut orientation detection sensor for detecting the fixed orientation of the hexagon nut 12 as in the prior art. The fixed orientation of the nut 12 can be obtained. That is, the correction according to the fixed orientation of the hexagon nut 12 can be performed at a low cost without causing an increase in component cost, and a desired rotation amount can be realized and an accurate rotation balance can be corrected. .

In addition, this invention is not limited to the said embodiment, The following modifications can be considered.
(1) FIG. 4 shows a block diagram of a rotation balance correcting device in this modification. In FIG. 4, the same components as those in FIG. As shown in FIG. 4, the rotation balance correcting device in this modification includes an R / D (resolver / digital) converter 8 instead of the comparator 5.

  The R / D converter 8 detects the rotation angle θ of the rotating shaft 11 based on the sine wave signal and the cosine wave signal input from the magnetic sensor 1 via the first amplifier 3, and is a digital indicating the detection result. Data (absolute signal) is output to the digital arithmetic unit 6b and the angle positioning mechanism 7a. For example, as shown in FIG. 4, when the conversion resolution of the R / D converter 8 is 10 bits (1024), 360 ° / 1024 = 0.35 °, and a rotation angle θ of 1 ° or less can be detected. is there.

  When the R / D converter 8 is provided in this way, the digital calculation unit 6b determines the rotation speed of the high-speed rotating body 10 from the absolute signal (that is, the detection result of the rotation angle θ) input from the R / D converter 8. The cutting amount and the cutting angle of the hexagon nut 12 are calculated based on the relationship between the rotation angle θ and the acceleration signal (vibration component) at a predetermined correction rotational speed. Moreover, the angle positioning mechanism 7a performs the origin return of the rotating shaft 11 based on the absolute signal input from the R / D converter 8 before positioning the cutting angle.

  In the rotation balance correction apparatus of FIG. 1, the rotation angle θ is calculated by software calculation based on the sine wave signal and cosine wave signal output from the magnetic sensor 1, but in this case, the calculation load in the digital calculation unit 6b is It becomes heavier and requires a high performance CPU. On the other hand, in the rotation balance correction apparatus of FIG. 4, since the rotation angle θ is detected by hardware (that is, the R / D converter 8), software calculation of the rotation angle θ is not necessary, and a relatively inexpensive CPU is installed. Can be used. In this modification, the case where the R / D converter 8 is used as the rotation angle detection unit is illustrated. However, if the rotation angle θ of the rotation shaft 11 can be detected, detection other than the R / D converter 8 is performed. A vessel may be used.

(2) In the above embodiment, the turbine of the vehicle supercharger is assumed as the high-speed rotating body 10, but the present invention can be applied to correct the rotational balance of a high-speed rotating machine such as a gas turbine. Is possible.

 DESCRIPTION OF SYMBOLS 1 ... Magnetic sensor, 2 ... Acceleration sensor, 3 ... 1st amplifier, 4 ... 2nd amplifier, 5 ... Comparator, 6 ... Balance calculation process part, 6a ... Signal input part, 6b ... Digital calculation part, 7 ... Balance correction Processing part, 7a ... Angle positioning mechanism, 7b ... Correction processing mechanism, 8 ... R / D converter, 10 ... High speed rotating body, 11 ... Rotating shaft, 11a ... Shaft end face, 12 ... Hexagon nut, 13 ... Rotating support

Claims (7)

A rotation balance correction device that corrects the rotation balance of the high-speed rotating body by correcting a correction target portion that is fixedly installed so as to rotate integrally with the rotation shaft of the high-speed rotating body,
A magnetic sensor installed opposite to the shaft end face of the rotating shaft magnetized by dividing it into N and S poles;
An acceleration sensor installed on a rotation support that supports the high-speed rotation body so as to be capable of high-speed rotation;
A balance calculation processing unit that calculates a correction amount and a correction angle of the correction target unit based on output signals of the magnetic sensor and the acceleration sensor;
A balance correction processing part that corrects the correction target part based on the correction amount after positioning the rotation angle of the rotary shaft based on the correction angle, and
The balance calculation processing unit corrects at least one of the correction amount and the correction angle in accordance with the relationship between the magnetization direction on the shaft end surface of the rotating shaft and the fixed direction with respect to the rotating shaft of the correction target unit. Rotation balance correction device.  The balance calculation processing unit calculates the rotation speed of the high-speed rotating body and the rotation angle of the rotation shaft from the output signal of the magnetic sensor, and based on the relationship between the rotation angle at a predetermined correction rotation speed and the output signal of the acceleration sensor. The rotation balance correction apparatus according to claim 1, wherein a correction amount and a correction angle of the correction target part are calculated. Based on the output signal of the magnetic sensor, a reference signal generation unit that generates an origin reference signal necessary for the origin return of the rotation axis before positioning by the balance correction processing unit,
The rotation balance correction apparatus according to claim 1, wherein the balance correction processing unit performs a return to the origin of the rotating shaft before the positioning based on the origin reference signal. A rotation angle detector for detecting the rotation angle of the rotation shaft based on the output signal of the magnetic sensor;
The balance calculation processing unit calculates the rotation speed of the high-speed rotating body from the rotation angle detected by the rotation angle detection unit, and based on the relationship between the rotation angle at a predetermined correction rotation speed and the output signal of the acceleration sensor. The rotation balance correction apparatus according to claim 1, wherein a correction amount and a correction angle of the correction target part are calculated.  5. The rotation balance correction device according to claim 4, wherein the balance correction processing unit performs origin return of the rotation axis before the positioning based on the rotation angle detected by the rotation angle detection unit.   6. The resolver / digital converter according to claim 4, wherein the rotation angle detection unit is a resolver / digital converter that outputs digital data indicating the detection result of the rotation angle based on an output signal of the magnetic sensor. Rotation balance correction device. A rotation balance correction method for correcting a rotation balance of the high-speed rotating body by correcting a correction target portion fixedly installed so as to rotate integrally with a rotating shaft of the high-speed rotating body,
An output signal of a magnetic sensor installed opposite to the shaft end face of the rotating shaft magnetized in two parts, N pole and S pole, and a rotating support that supports the high speed rotating body so as to be capable of high speed rotation. A first step of calculating a correction amount and a correction angle of the correction target portion based on the output signal of the acceleration sensor;
A second step of correcting the correction target portion based on the correction amount after positioning the rotation angle of the rotating shaft based on the correction angle; and
In the first step, at least one of the correction amount and the correction angle is corrected according to the relationship between the magnetization direction on the shaft end surface of the rotation shaft and the fixed direction of the correction target portion with respect to the rotation axis. Rotation balance correction method.

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