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Method for selecting voice coil motor for active suspension

An active suspension, voice coil motor technology, applied in suspension, elastic suspension, electrical digital data processing and other directions, can solve the problems of high cost and large error, reduce selection cost, reduce calculation error, good reference effect of meaning

Inactive Publication Date: 2018-09-11
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the selection of actuator voice coil motors, most of them rely on empirical methods and experimental tests, which are costly and have large errors

Method used

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  • Method for selecting voice coil motor for active suspension
  • Method for selecting voice coil motor for active suspension
  • Method for selecting voice coil motor for active suspension

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] like figure 1 As shown, the present invention relates to a method for selecting a voice coil motor for active suspension, comprising the following steps:

[0037] Step 1. Analyze the vibration characteristics of the powertrain and determine the structural parameters of the passive part of the active mount, including the equivalent expansion area of ​​the main spring, the equivalent expansion stiffness of the main spring, the displacement of the expansion area of ​​the upper cavity, and the equivalent piston area of ​​the main spring , the decoupling membrane area, the cross-sectional area of ​​the inertial channel, the equivalent length of the inertial channel and the damping of the liquid in the inertial channel;

[0038] Step 2. Calculate the transfer function relationship between the displacement of the actuator and the excitation displacement of the powertrain through the structural parameters determined in step 1. Find the amplitude ratio at the natural frequency o...

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Abstract

The invention relates to a method for selecting a voice coil motor for active suspension. The method includes: S1: determining structural parameters of the passive portion of the active suspension; S2: calculating a transfer function relationship between the actuator displacement and the powertrain excitation displacement according to the structural parameter, and acquiring the minimum stroke of the actuator; S3: obtaining a transfer function relationship between the actuator current and the excitation displacement of the powertrain according to the structural parameter; S4: obtaining a transfer function relationship between the current and the powertrain excitation displacement, acquiring the maximum current of the actuator, and then obtaining the peak value force; S5: calculating the root mean square of the output force by combining the peak force with the inertial force of the frictional force, the elastic force and the moving mass of the active suspension; S6: taking the root meansquare of the minimum stroke and output force of the actuator as the parameter basis, selecting the voice coil motor that matches it. Compared with the prior art, the method obtains parameters quicklyand effectively, reducing the selection cost, and providing a theoretical reference for selecting the voice coil motor.

Description

technical field [0001] The invention relates to the field of vibration isolation of automobile powertrains, in particular to a method for selecting a voice coil motor for active suspension. Background technique [0002] The performance of the suspension has an important impact on the ride comfort of the car. Its quality is directly related to the transmission of powertrain vibration to the car body, affecting the NVH (Noise, Vibration, Harshness, noise, vibration and harshness of the vehicle) degree) characteristics. [0003] At present, the development of hybrid electric vehicles is booming. The frequent start and stop of the powertrain and the high rate of increase of the engine speed pose a greater challenge to the comfort of the vehicle; in order to improve fuel economy, cylinder deactivation technology has been adopted in some high-end cars. Use, when the load is small, adopt "Cylinder On Demand", the system will automatically close some cylinders. The use of this tec...

Claims

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Application Information

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IPC IPC(8): G06F17/50B60G17/015
CPCB60G17/015B60G2500/10G06F30/15G06F30/20Y02T90/00
Inventor 郭荣陈浩位小康
Owner TONGJI UNIV
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