Intelligent particle swarm fuzzy hybrid control method for automotive semi-active suspension systems

A semi-active suspension and hybrid control technology, applied in suspension, elastic suspension, vehicle components, etc., can solve problems such as difficulty in taking into account both ride comfort and road friendliness, and inability to achieve optimal control, so as to improve ride comfort and performance. Road friendliness, novel design ideas, good safety and stability

Inactive Publication Date: 2013-09-04
QINGDAO UNIV
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Problems solved by technology

All in all, most of the existing vehicle semi-active suspension system control methods rely on the dynamic model of the complex controlled object, and it is usually difficult to take into account both ride comfort and road friendliness, especially the input and output fuzzy variables of fuzzy control. The membership function is usually set by the experience of technicians, and it is impossible to achieve optimal control

Method used

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  • Intelligent particle swarm fuzzy hybrid control method for automotive semi-active suspension systems
  • Intelligent particle swarm fuzzy hybrid control method for automotive semi-active suspension systems
  • Intelligent particle swarm fuzzy hybrid control method for automotive semi-active suspension systems

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Embodiment

[0027] The intelligent particle swarm fuzzy hybrid control method that takes into account vehicle ride comfort and road friendliness involved in this embodiment includes the following steps:

[0028] (1) Using four pairs of acceleration sensors and their filter integration modules, respectively collect the vertical vibration velocity of the sprung mass at the left front, left rear, right front, and right rear of the semi-active suspension system vehicle, and the vertical vibration of the unsprung mass Speed, to generate the input signal of the intelligent particle swarm fuzzy hybrid controller;

[0029] (2) Use fuzzy control to fuzzify the input signals such as the vertical vibration velocity of each sprung mass and the vertical vibration velocity of unsprung mass described in step (1), form input fuzzy variables, and then fuzzy each input The signal is sent to the fuzzy controller;

[0030] (3) Set up the fuzzy control rule base of the vehicle semi-active suspension system i...

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Abstract

The invention belongs to the technical field of automotive chassis control, and relates to an automotive semi-active suspension system control method, in particular to an intelligent particle swarm fuzzy hybrid control method for automotive semi-active suspension systems, which takes both riding comfort and road-friendliness into consideration. The particle swarm optimization method in the intelligent swarm theory is utilized to deeply optimize the input fuzzy variables (i.e. the vibration velocity of sprung mass and the vibration velocity of unsprung mass) and output fuzzy variables (i.e. each membership function of a damping force distribution coefficient) of a semi-active suspension system; and finally, a hybrid control core is utilized to control the semi-active suspension system in real time. The design idea of the intelligent particle swarm fuzzy hybrid control method is novel, the control principle is reliable, the safety and the stability are good, the automation degree is high, the application range is wide, and the intelligent particle swarm fuzzy hybrid control method can be widely used for controlling semi-active suspension systems of various vehicles.

Description

Technical field: [0001] The invention belongs to the technical field of automobile chassis control, and relates to a vehicle semi-active suspension system control method, in particular to a vehicle semi-active suspension system intelligent particle swarm fuzzy hybrid control method that can take into account ride comfort and road friendliness. Background technique: [0002] The suspension system is the main structural component of the chassis of the car. The suspension system refers to the general term for all parts connecting the body and the wheels. The impact load transmitted to the frame or body can attenuate the vibration of the bearing system caused by it, so as to ensure the driving performance of the car. The traditional passive suspension system cannot automatically adjust the stiffness of the car suspension and the damping force of the shock absorber as the car's driving speed and road conditions change, and it is difficult to achieve a comprehensive balance of veh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60G17/016G06N3/00
Inventor 严天一王玉林张鲁邹张付凯
Owner QINGDAO UNIV
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