Method for determining a rotational angle position and/or a rotational speed

Patent metadata

Field	Value
Publication number	US-10030996-B2
Application number	US-201414578397-A
Country	US
Kind code	B2
Filing date	Dec 20, 2014
Priority date	Dec 23, 2013
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

A method of determining at least one of a rotational angle position and a rotational speed of a rotating element of a drive train includes arranging at least two sensors in an offset manner in a circumferential direction of the rotating element, recording a measured value indicative of a characteristic of a rotation of the rotating element with each sensor, and determining at least one of a rotational angle position and a rotational speed with reference to the measured values and a distance between the at least two sensors in the circumferential direction.

First claim

What is claimed is:

1. A method of improving operation of a drive train, comprising:
measuring, with each of a first sensor and a second sensor, a respective first measured value and a second measured value indicative of a characteristic of a rotation of a rotating element of the drive train, the first and second sensors being offset relative to one another in a circumferential direction of the rotating element;
determining at least one of a rotational angle position and rotational speed of the rotating element by compensating for at least one of a radial movement and a tangential movement of the rotating element relative to a nominal axis of the rotating element based on the first measured value, the second measured value, and a distance between the first and second sensors in the circumferential direction; and
damping vibrations on the drive train on the basis of the determined at least one of the rotational angle position and rotational speed of the rotating element.

2. The method according to claim 1 , further comprising determining at least one of (i) a torsional angle and (ii) a torque with reference to the first and second measured values, the first and second measured values each corresponding to one of a rotational angle position value and a rotational speed value.

3. The method according to claim 1 , wherein:
the first and second sensors are offset from each other by an angle in the circumferential direction in a range from 150° to 210° measured about the nominal axis; and
the first and second sensors are at approximately a same location in an axial direction defined along the nominal axis.

4. The method according to claim 3 , wherein the at least one rotational angle position and rotational speed is determined via at least one of a calculation rule and an averaging.

5. The method according to claim 1 , further comprising:
recording, via a third sensor, a third measured value that is indicative of a characteristic of the rotation of the rotating element,
wherein the determination of the at least one rotational angle position and rotational speed is based on the third measured value.

6. The method according to claim 5 , further comprising:
arranging the third sensor in an offset manner in an axial direction with respect to the first and second sensors, the axial direction defined along the nominal axis.

7. The method according to claim 6 , further comprising determining at least one of (i) a torsional angle and (ii) a torque with reference to the third measured value and the first and second measured values, the first and second measured values each corresponding to one of a rotational angle position value and a rotational speed value.

8. The method according to claim 6 , wherein:
the third sensor is arranged on an element of the drive train, which includes a transmission; and
the element is configured to rotate at a faster rate than the rotating element.

9. The method according to claim 1 , further comprising:
recording, via each of a third sensor and a fourth sensor, respective third and fourth measured values that are indicative of a characteristic of the rotation of the rotating element.

10. The method according to claim 1 , wherein the first and second sensors are each configured to record the respective first and second measured values using a signal tape or a gear wheel on the rotating element.

11. The method according to claim 1 , wherein the first and second sensors are each configured to record the respective first and second measured values using a signal tape that includes markings.

12. The method according to claim 1 , wherein the drive train is a drive train of an energy generation plant.

13. The method according to claim 1 , wherein:
the first measured value is a first measured rotational speed of the rotating element;
the second measured value is a second measured rotational speed of the rotating element; and
the compensating for the at least one of the radial movement and the tangential movement of the rotating element is based on a difference between the first and second measured rotational speeds and the distance between the first and second sensors in the circumferential direction.

14. An energy generation plant, comprising:
a drive train including a rotating element having a nominal axis;
a first sensor configured to measure a first measured value of the rotating element;
a second sensor offset relative to the first sensor by a distance in a circumferential direction of the rotating element, the second sensor configured to measure a second measured value of the rotating element; and
a computing device configured to receive the first and second measured values and determine at least one of a rotational angle and a rotational speed of the rotating element by compensating for at least one of a radial movement and a tangential movement of the rotating element relative to the nominal axis based on the first measured value, the second measured value, and the distance; and
wherein the computing device is further configured to regulate torque and pitch of the energy generation based on the determined at least one of the rotational angle position and rotational speed of the rotating element.

15. The energy generation plant according to claim 14 , the rotating element including at least one of a signal tape and a gearwheel.

16. The energy generation plant according to claim 14 , wherein:
the first measured value is a first measured rotational speed of the rotating element;
the second measured value is a second measured rotational speed of the rotating element; and
the computing device is configured such that the compensating for the at least one of the radial movement and the tangential movement of the rotating element is based on a difference between the first and second measured rotational speeds and the distance between the first and second sensors in the circumferential direction.

17. A method of improving operation of a drive train, comprising:
measuring, with each of a first sensor and a second sensor, a respective first measured value and a second measured value indicative of a characteristic of a rotation of a rotating element of the drive train, the first and second sensors being offset relative to one another in a circumferential direction of the rotating element;
determining at least one of a rotational angle position and rotational speed of the rotating element by compensating for at least one of a radial movement and a tangential movement of the rotating element relative to a nominal axis of the rotating element based on the first measured value, the second measured value, and a distance between the first and second sensors in the circumferential direction; and
regulating torque and pitch of a wind energy plant in which the drive train is installed based on the determined at least one of the rotational angle position and rotational speed of the rotating element.

18. The method according to claim 17 , further comprising determining at least one of (i) a torsional angle and (ii) a torque with reference to the first and second measured values, the first and second measured values each corresponding to one of a rotational angle position value and a rotational speed value.

19. The method according to claim 17 , wherein:
the first and second sensors are offset from each other by an angle in the circumferential direction in a range from 150° to 210° measured about the nominal axis; and
the first and second sensors are at approximately a same location in an axial direction define

Assignees

• Bosch Gmbh Robert
• Zahnradfabrik Friedrichshafen

Inventors

• Vath Andreas
• Grimm Sebastian

Classifications

• G01P3/481

  of pulse signals · CPC title

• F02D28/00

  Program control of engines · CPC title

• F05B2270/326

  Rotor angle · CPC title

• F03D17/00

  Monitoring or testing of wind motors, e.g. diagnostics (testing during commissioning of wind motors F03D13/30) · CPC title

• G01B7/30

  for measuring angles or tapers; for testing the alignment of axes · CPC title