Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Mechanical frequency-shift type power shock absorber and control method

A dynamic vibration absorber, frequency-based technology, applied in mechanical equipment, vibration suppression adjustment, spring/shock absorber, etc., can solve the problems of dynamic vibration absorber vibration reduction characteristics are not significantly affected, the control method is complex, multi-energy, etc., to achieve Ease of designing control laws, high system reliability, and low energy consumption

Inactive Publication Date: 2007-06-13
UNIV OF SCI & TECH OF CHINA
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this control method is more complicated, because it not only needs to drive the linear motor, which consumes more energy, but also according to the principle of the vibration absorber, changing these parameters has no significant impact on the vibration reduction characteristics of the dynamic vibration absorber

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mechanical frequency-shift type power shock absorber and control method
  • Mechanical frequency-shift type power shock absorber and control method
  • Mechanical frequency-shift type power shock absorber and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Referring to Fig. 1, the screw 1 and the nut 2 constitute a screw nut movement pair. An angular velocity sensor (code disc) 6 for measuring the rotation angle of the screw is installed at the lower end of the screw 1, the lower end of the screw is fixedly connected with the rotating shaft of the motor 7, and the motor base 8 is fixedly mounted on the object to be damped. The concentrated mass 5 is connected to the nut 2 and the motor base 8 respectively through two elastic rods 3 and 4, one end of the elastic rod 3 is hinged on the outer edge of the nut 2 by a pin shaft, and one end of the elastic rod 4 is hinged by a pin shaft On the motor frame 8. The other ends of the two elastic rods 3 and 4 are respectively hinged on the central axis of the lumped mass 5, and the two elastic rods 3, 4 and the screw rod 1 form an isosceles triangle with a variable base length. When the motor 7 rotates, it drives the screw 1 to rotate, and due to the engagement of the screw nut, the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to damping device and control method. The vibration absorber includes mechanical device and control system. The former includes one kinematic pair formed by nut and screw connected with the electric motor principal axis of which base hinged with one elastic rod. Nut out edge is hinged with another elastic rod. Another ends of the two elastic rods are respectively hinged with the wrist to form isosceles triangle. Angular transducer and acceleration transducer are connected with the control system signal acquisition input port. The control method includes the following steps: inputting vibrating signal into control system; analyzing main vibrating frequency and calculating span value; transforming the span value into rotating signal to make the electric engine drive the nut to rotate; changing the span value for the two elastic rods until to the calculated value. The invention can track the vibration frequency of the object by adjusting vibration absorber natural frequency to reach the optimal damping effect.

Description

Technical field: [0001] The invention relates to a vibration damping device and a control method, in particular to a dynamic vibration absorber and a control method for frequency shifting using mechanical principles. Background technique: [0002] The traditional dynamic vibration absorber is a main actuator for passive vibration control, which has the characteristics of simple structure, convenient installation and remarkable effect of suppressing single-frequency vibration. However, this kind of dynamic vibration absorber usually has a narrow and non-adjustable control frequency band, so a vibration absorber can usually only reduce the vibration of a steady-state vibration with a fixed excitation frequency. When the excitation frequency of the vibration-damped object deviates from its control frequency band, the vibration-damping effect will deteriorate sharply, or even become worse. If the method of increasing the bandwidth is used to solve it, it will definitely make it...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16F15/067
Inventor 李剑锋张先舟龚兴龙张培强
Owner UNIV OF SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com