Vehicle layered modeling vibration control method and apparatus

A technology of automobile and control quantity, which is applied in the direction of mechanical oscillation control, non-electric variable control, general control system, etc., and can solve the problem that the suspension quality cannot be decoupled

Inactive Publication Date: 2009-06-24
SANMING UNIV
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Problems solved by technology

In addition, the research on the implementation of different control strategies for each of the four wheel trains of the car

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  • Vehicle layered modeling vibration control method and apparatus
  • Vehicle layered modeling vibration control method and apparatus
  • Vehicle layered modeling vibration control method and apparatus

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Embodiment Construction

[0053] The solution idea of ​​the method of the present invention is: carry out spatial force analysis on the suspended mass and list its balance equation, and pass through the vertical and lateral movement between the 1# to 4# units on both sides of the front and rear axles and the centroid of the suspended mass. relationship, the transformation can only contain the expressions of the vertical acceleration, lateral acceleration, pitch angular acceleration, roll angular acceleration, and yaw angular acceleration of the suspended mass of units 1# to 4#, so a continuous distribution can be obtained from the mathematical model The suspension mass is regarded as composed of the concentrated mass of four units. Further analysis of the interconnection conditions can regard the traditional overall suspension of a car as a combination of four 1 / 4 controllable suspension systems on both sides of the front and rear axles (vertical, A total of eight two-degree-of-freedom systems in the la...

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Abstract

The invention relates to a method and a device for controlling the vibration in an automobile hierarchical modeling manner. The method comprises the following steps: sending the data of eight vertical and lateral road roughness sensors to a CPU processor, integrating the hierarchical modeling algorithm and obtaining the motion state of the centroid of suspended mass, the constrained force of suspended mass, and acceleration predictive values obtained by predicting and decoupling the vertical and lateral acceleration variable quantities of No.1 to No.4 suspension brackets, through the operation; respectively transmitting to eight vertical and lateral matrix control quantity operation module of No.1 to No.4 units; obtaining theoretical quantity of controllable actuators of No.1 to No.4 units after the synthesis is conducted; conducting the conversion operation of actuating quantity because the data received by each actuator generates the corresponding action. The invention has the advantages that the hierarchical control architecture built on the basis of considering the common influence of the vertical excitation and the lateral excitation of the road is converted into eight four-multiplied-four matrix, so as to simultaneously conduct the control quantity operation of four controllable actuators and the vibration control, thereby reducing online operation time and reaching the optimum vibration control effect of the whole automobile.

Description

Technical field: [0001] The invention relates to an automobile vibration buffer control method. Background technique: [0002] In the study of vibration control of modern vehicle suspension, it is not comprehensive to only consider the vertical effect of road excitation, and the influence of road lateral excitation on the vehicle's lateral vibration and yaw angle vibration on the vehicle's vibration when driving in complex road conditions is also important. It should be analyzed and discussed. [0003] Traditional vehicle modeling combined with some control strategies can be used to calculate vibration control. If such a vehicle model includes the driver's seat system and engine system, and the driver's seat system and engine system only consider the vibration in the vertical direction, there are 15 degrees of freedom, such as figure 1 shown. The 15 degrees of freedom are: vertical vibration (z direction) at the 4 unsprung masses, lateral vibration (y direction) at the 4 ...

Claims

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Application Information

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IPC IPC(8): G05D19/02G05B17/02
Inventor 吴龙
Owner SANMING UNIV
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