Apparatus and method for vibration-isolating bearing of loads

• US 6,758,312 B2
• Filed: 04/23/2002
• Issued: 07/06/2004
• Est. Priority Date: 04/24/2001
• Status: Expired due to Term

• Current Assignee: Peter Heiland
• Original Assignee: Peter Heiland
• Inventors: Heiland, Peter
• Primary Examiner(s): Schwartz, Christopher P.
• Application Number:
  US10/131,297
• Publication Number:
  US 20020185796A1
• Time in Patent Office: 805 Days
• Field of Search: 188/266.7, 188/378, 188/379, 188/380, 248/550, 248/566, 267/140.14, 267/140.15
• US Class Current: 188/378
• CPC Class Codes: F16F 15/005 using electro- or magnetostrictive actuation means generating of mechanical vibrations operating with electrostriction B06B1/06, with magnetostriction B06B1/08; vehicle suspension arrangements characterised by use of piezoelectric elements B60G17/01941; piezoelectric, electrostrictive and magnetostrictive devices per se H10N30/00
• CPC Class Codes: F16F 15/08 with rubber springs grommet- or bushing-type resilient mountings F16F1/3732, F16F1/38; with springs made of rubber and metal arrangement of internal-combustion or jet-propulsion units B60K5/12; mounting of propulsion plants on vessels B63H21/30; mounting of vehicle drivers' cabs B62D33/0604

Abstract

An active system for isolating vibrations includes: at least one first vibratio-isolating device, arranged between a load and a sstanding surface, for at least partially decoupling the static and dynamic forces acting between the load and the standing surface, the first vibration-isolating device includes a passively isolating coupling element for mechanically decoupling the static and dynamic forces including a natural frequency; at least one second vibration-isolating device, assigned to the load, for imparting control forces to the load for actively damping the substantially decoupled dynamic forces, the second fibratio-isolating device including a coupling element for dynamically coupling said second vibration-isolating device to the load and the first isolating device<the coupling element including a natural frequency; means for tuning the control forces of the second vibratio-isolating device and the natural frequencies, wherein the control forces of the second vibration-isolating device and the natural frequencies are determined by means of characteristic curves describing the functional dependency of the control forces to the natural frequencies of the passively isolating doupling element and the ratio of the natural frequencies.

Claims

1. An active system for isolating vibrations, comprising:

at least one first vibration-isolating device, arranged between a load and a standing surface, for at least partially decoupling the static and dynamic forces acting between the load and the standing surface, said first vibration-isolating device comprising a passively isolating coupling element for mechanically decoupling the static and dynamic forces including a natural frequency;

at least one second vibration-isolating device, assigned to the load, for imparting control forces to the load for actively damping the substantially decoupled dynamic forces, said second vibration-isolating device comprising a coupling element for dynamically coupling said second vibration-isolating device to the load and the first isolating device, said coupling element including a natural frequency;

means for tuning the control forces of the second vibration-isolating device and the natural frequencies, wherein the control forces of the second vibration-isolating device and the natural frequencies are determined by means of characteristic curves describing the functional dependency of the control forces to the natural frequencies of the passively isolating coupling element and the ratio of the natural frequencies.

2. The apparatus as claimed in claim 1, wherein said second vibration-isolating device is assigned to the first vibration-isolating device.

3. The apparatus as claimed in claim 1, wherein the coupling element comprises both vertical and horizontal vibrational capabilities.

4. The apparatus as claimed in claim 1, wherein the coupling element comprises a rubber spring or a rubber spring combination.

5. The apparatus as claimed in claim 1, wherein the coupling element comprises an air cushion and/or magnetic levitation device.

6. The apparatus as claimed in claim 1, wherein a vibration amplitude of a dynamic vibration can be set via the setting of the physical and technical parameters of the coupling elements.

7. The apparatus as claimed in claim 1, wherein the apparatus comprises a control device.

8. The apparatus as claimed in claim 1, wherein the apparatus comprises at least one piezoelectric module for active isolation of vibrations.

9. The apparatus as claimed in claim 8, wherein the piezoelectric modules in the apparatus are arrangeable such that the piezoelectric modules exert an active vibration-isolating effect in all directions.

10. The apparatus as claimed in claim 1, wherein the apparatus comprises a load-bearing means.

11. The apparatus as claimed in claim 1, wherein the apparatus includes a vibration-sensing unit.

12. The apparatus as claimed in claim 1, wherein the apparatus comprises a regulating device.

13. The apparatus as claimed in claim 1, wherein the isolation of vibrations is implementable by means of feedback control.

14. The apparatus as claimed in claim 1, wherein the isolation of vibrations are implementable by means of forward control.

15. A method for isolating vibrations of loads, comprising the following steps:

a) providing at least one first vibration-isolating device for at least partial decoupling the static and dynamic forces acting between the load and a standing surface with a passively isolating coupling element including a natural frequency,

b) proving a second vibration-isolating device for imparting control forces to the load, comprising a coupling element for coupling the second vibration-isolating device to the load, said coupling element including a natural frequency,

c) tuning the control forces of the second vibration-isolating device and the natural frequencies, wherein the control forces of the second vibration-isolating device and the natural frequencies are determined by means of characteristic curves describing the functional dependency of the control forces to the natural frequencies of the passively isolating coupling element and the ratio of the natural frequencies,

d) providing the control force of the second vibration-isolating device and the natural frequencies of the coupling elements

e) imparting the tuned control force to the load for actively damping the at least partially decoupled dynamic forces.

16. The method as claimed in claim 15, wherein the second vibration-isolating device comprises at least one actuator.

17. An active system for isolating vibrations, realized by the method as claimed in claim 15.

18. An adaptive system for isolating vibration, realized by the method as claimed in claim 15.