Resonance method for a vibration system, a converter, an excitation unit and the vibration system

Patent metadata

Field	Value
Publication number	US-12194496-B2
Application number	US-202118023642-A
Country	US
Kind code	B2
Filing date	Aug 16, 2021
Priority date	Aug 31, 2020
Publication date	Jan 14, 2025
Grant date	Jan 14, 2025

Abstract

A resonance method for a vibration system for resonant vibration of an excitation unit having a vibrating mass includes detecting a deflection of the vibrating mass, differentiating the deflection to form a velocity of the vibrating mass; generating from the deflection and the velocity a mechanical phase position; forming from the mechanical phase position a corrected phase position by using a correction value; forming, based on the corrected phase position, an electrical angular frequency with a P-regulation; integrating the electrical angular frequency to determine an electrical phase position; forming from the electrical phase position a correction factor by using a trigonometric function; and applying the correction factor to an excitation setpoint value to generate a corrected excitation setpoint value. Also disclosed are a converter, an excitation unit having the converter, and a vibration system having the excitation unit and the vibrating mass.

First claim

The invention claimed is:

1. A resonance method for a vibration system for resonant vibration of an excitation unit having a vibrating mass the method, comprising:
detecting a deflection of the vibrating mass;
differentiating the deflection to form a velocity of the vibrating mass;
generating from the deflection and the velocity a mechanical phase position;
forming from the mechanical phase position a corrected phase position by using a correction value,
forming, based on the corrected phase position an electrical angular frequency with a P-regulation,
forming from the electrical angular frequency a standardized velocity by dividing the velocity by the electrical angular frequency;
integrating the electrical angular frequency to determine an electrical phase position;
forming from the electrical phase position a correction factor by using a trigonometric function; and
applying the correction factor to an excitation setpoint value to generate a corrected excitation setpoint value.

2. The resonance method of claim 1 , wherein the correction value for phase position correction is a fed-back electrical phase position.

3. The resonance method of claim 2 , wherein the fed-back electrical phase position is subtracted from the mechanical phase position.

4. The resonance method of claim 1 , further comprising initializing the method by specifying an initial angular frequency or by using a last known electrical angular frequency.

5. The resonance method of claim 1 , wherein the mechanical phase position is determined between a deflection amplitude of the deflection and the velocity.

6. The resonance method of claim 1 , further comprising:
detecting the deflection with a deflection signal from a deflection measuring apparatus; and
correcting the deflection signal with a DC component depending on the Installation location of the deflection measuring apparatus relative to the vibrating mass, wherein the DC component is predetermined by a DC component parameter or the DC component is determined by a DC component high-pass filter.

7. The resonance method of claim 1 , wherein the excitation setpoint value is a setpoint current and the corrected excitation setpoint value is a corrected setpoint current.

8. The resonance method of claim 1 , further comprising detecting faults by monitoring the electrical angular frequency for disturbances in the resonant vibration of the excitation unit and the vibrating mass.

9. A converter comprising:
a detection unit configured to detect a deflection of a vibrating mass;
a first forming unit configured to form a velocity of the vibrating mass by differentiating the deflection;
a generating unit configured to generate from the deflection and the velocity a mechanical phase position;
a correction unit configured to form from the mechanical phase position a corrected phase position by using a correction value;
a second forming unit configured to form, based on the corrected phase position, an electrical angular frequency with a P-regulation;
a standardization unit configured to form from the electrical angular frequency a standardized velocity by dividing the velocity by the electrical angular frequency;
a third forming unit configured to integrate the electrical angular frequency to determine an electrical phase position;
a fourth forming unit configured to form from the electrical phase position a correction factor by using a trigonometric function; and
an application unit configured to apply the correction factor to an excitation setpoint value to generate a corrected excitation setpoint value.

10. The converter of claim 9 , wherein the correction value for phase position correction is a fed-back electrical phase position.

11. The converter of claim 10 , wherein the fed-back electrical phase position is subtracted from the mechanical phase position.

12. An excitation unit, comprising:
an electromagnet exciting a vibrating mass;
a converter as set forth in claim 9 for operating the electromagnet; and
a deflection measuring apparatus measuring the deflection of the vibrating mass with respect to a resting position of the vibrating mass.

13. The excitation unit of claim 12 , further comprising a spring element connected to the vibrating mass.

14. The excitation unit of claim 12 , wherein the correction value for phase position correction is a fed-back electrical phase position.

15. The excitation unit of claim 14 , wherein the fed-back electrical phase position is subtracted from the mechanical phase position.

16. A vibration system, comprising:
a vibration mass; and
an excitation unit comprising an electromagnet exciting the vibrating mass, a converter as set forth in claim 9 for operating the electromagnet, and a deflection measuring apparatus measuring the deflection of the vibrating mass with respect to a resting position of the vibrating mass.

17. The vibration system of claim 16 , embodied as a friction welding apparatus or as a transport apparatus.

Assignees

• Siemens Ag

Inventors

• Fritsch Christoph
• Richter Theo
• Streubühr Martin
• Wedel Bernd

Classifications

• B06B1/0261 Primary

  taken from a transducer or electrode connected to the driving transducer · CPC title

• B06B2201/72

  Welding, joining, soldering · CPC title

• B06B1/045

  using vibrating magnet, armature or coil system · CPC title

• B06B1/0246 Primary

  with a feedback signal · CPC title