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Method for extracting error signal in three-dimensional active vibration isolation control system

An active vibration isolation and error signal technology, which is applied in the direction of measuring devices, instruments, and measurement acceleration, can solve problems such as not being able to meet the active vibration isolation function, and achieve the effect of avoiding interference

Active Publication Date: 2015-03-18
SHANGHAI QIYAO HEAVY IND CO LTD
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  • Abstract
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Problems solved by technology

Therefore, the conventional method of only relying on a single sensor to extract the error signal often cannot meet the requirements of the actual active vibration isolation function

Method used

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  • Method for extracting error signal in three-dimensional active vibration isolation control system
  • Method for extracting error signal in three-dimensional active vibration isolation control system
  • Method for extracting error signal in three-dimensional active vibration isolation control system

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Embodiment Construction

[0017] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0018] The present invention provides a method for extracting error signals in a three-way active vibration isolation control system, as shown in the attached figure 2 and 3 As shown, in the active vibration isolator system, the three actuators respectively apply secondary excitation sources to the vertical, horizontal and vertical directions to suppress the vibration of the base, and the force sensor 3 is placed in the active vibration isolator shell 5 Between the upper splint 2, or between the active vibration isolator shell 5 and the base; correspondingly install the acceleration sensor 4 on the active vibration isolator shell near each force sensor 3; at this time, use the active vibration isolator shell The external acceleration sensor measures the acceleration response of the base in the three directions of horizontal x, vertical y, and vertical z ...

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Abstract

The invention relates to a method for extracting an error signal in a three-dimensional active vibration isolation control system. Force sensors are arranged between an active vibration isolator casing and an upper clamping plate or between the active vibration isolator casing and a base. Acceleration sensors are additionally arranged on the active vibration isolator casing, respectively measure acceleration responses of the base in a vertical direction, a horizontal direction and a longitudinal direction, and calculates volume by utilizing force signals and acceleration signals measured at the same time in the same direction, and then the error signal can be obtained. The method can be practically applied to active vibration isolation of motive power machines of ships, planes and the like with complicated vibration environments, and ensures smooth operation of the active vibration isolation system.

Description

technical field [0001] The invention relates to an active vibration isolation system, in particular to a method for extracting error signals in an active vibration isolation control system, and belongs to the technical field of active vibration isolation. Background technique [0002] Active vibration isolation is to detect the main vibration characteristics of the vibration source or the controlled object, introduce the secondary vibration source into the controlled system, and adjust the output of the secondary vibration source (that is, the actuator) through a certain control method to make it generate The vibration of the main vibration source cancels out, so as to achieve the purpose of vibration isolation. [0003] The active vibration isolator is the main part of the vibration isolation system. The outer casing and the upper splint form the shell of the active vibration isolator. Three actuators are arranged in the inner space of the shell. The secondary excitation s...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/00G01P15/00
Inventor 支李峰魏新元尹立国童宗鹏姚利锋姚辉马炳杰
Owner SHANGHAI QIYAO HEAVY IND CO LTD