Method for controlling mechanical vibrations

By designing a 15-segment non-smooth segmented smoother to filter the drive commands, the problems of long adjustment time, poor adaptability and large impact of existing vibration control methods are solved, and efficient vibration control and safety of mechanical systems are achieved.

CN116382365BActive Publication Date: 2025-12-16BEIJING INST OF TECH
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Patent Information

Application Number
CN202310531275.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-11
Publication Date
2025-12-16
Estimated Expiration
2043-05-11

AI Technical Summary

Technical Problem

Existing vibration control methods suffer from long settling times, poor adaptability to changes in system dynamic behavior, poor robustness, the potential for impacts from input shaping techniques, difficulty in detecting vibration states with feedback control, and fixed and long settling times with command smoothing techniques.

Method used

Design a non-smooth piecewise smoother with 15 segments to filter drive commands by estimating the frequency and damping ratio of the mechanical system in order to control the vibration of the mechanical system.

Benefits of technology

It achieves vibration control of mechanical systems, with variable adjustment time, good adaptability to changes in system dynamic behavior, strong robustness, reduced boundary impact, and minimal application limitations, achieving optimal working efficiency and safety.

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Abstract

The application provides a mechanical vibration control method, and belongs to the technical field of advanced manufacturing and automation. The application provides a 15-segment non-smooth segmented smoother, which can be used in vibration control of a mechanical system. The application solves the problems of long adjustment time of smooth curves, poor adaptability to system dynamic behavior change, and poor robustness. The application solves the problem that input shaping technology may have large boundary impact. The application solves the problem that feedback control is difficult to detect vibration state and is limited in application. The application solves the problem that the adjustment time of part of the Command smoothing technology is fixed and long. The main point of the 15-segment non-smooth segmented smoother is to combine a notch filter and a low-pass filter. The vibration of the main vibration mode can be suppressed by the notch filter characteristic, and the vibration of the high mode can be controlled by the low-pass filter characteristic. The implementation process of the method is embodied in the specific embodiments.
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