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Optimal control method for electric control suspension vehicle coupling

An optimal control and electronically controlled suspension technology, applied in design optimization/simulation, electrical digital data processing, constraint-based CAD, etc. And other issues

Active Publication Date: 2021-09-10
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the established model is limited and cannot fully and accurately describe the state of the vehicle in different situations
At the same time, the correspondingly established control algorithm can only control a certain system alone, without taking into account the internal relationship between various systems, which greatly affects the expected results

Method used

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  • Optimal control method for electric control suspension vehicle coupling
  • Optimal control method for electric control suspension vehicle coupling
  • Optimal control method for electric control suspension vehicle coupling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] In this embodiment, an optimal control method for electronically controlled suspension vehicle coupling, such as figure 1 As shown, proceed as follows:

[0058] Step 1: Arrange the signal collection mechanism;

[0059] The required signal collection mechanism includes: rotation angle sensor, vehicle speed sensor, longitudinal acceleration sensor;

[0060] The angle sensor is installed in the steering column under the steering wheel to collect the front wheel angle signal;

[0061] The vehicle speed sensor is installed next to the output shaft of the gearbox to collect real-time vehicle speed;

[0062] The longitudinal acceleration sensor is installed at the front end of the car's center of gravity to collect the longitudinal acceleration when the vehicle is running;

[0063] Step 2: Establish a vehicle transverse model;

[0064] Step 2.1: Set the current time as t and initialize it to obtain the data collected by the signal collection mechanism, including: the front...

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PUM

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Abstract

The invention discloses an optimal control method for electric control suspension vehicle coupling. The method is based on a whole vehicle suspension model of coupling pitching and roll motion, is applied to an electric control suspension comprising an information collection mechanism, and comprises the following steps: (1) arranging a signal collection mechanism, (2) obtaining a transverse acceleration by using a whole vehicle transverse model, (3) collecting a longitudinal acceleration, (4) building a whole vehicle suspension model coupling pitching and rolling, (5) building a state equation and an output equation of a whole vehicle coupling model, and (6) executing an integrated coupling control method. According to the method, coupling of the vertical model, the transverse model and the longitudinal model of the whole vehicle and optimal suspension parameter matching based on the coupling model of the whole vehicle can be realized, so that the posture and the driving smoothness of the vehicle are effectively improved.

Description

technical field [0001] The invention relates to the field of designing vehicle chassis suspension control, and specifically relates to a vehicle suspension model building method coupled with pitch and roll motions and an optimal control strategy. Background technique [0002] The suspension system is an important structural component that connects the body and the wheels of the car. Its main function is to buffer and attenuate the impact load generated by the road surface, so as to suppress the beating of the wheels and reduce the irregular vibration of the body, and improve and enhance the driving of the vehicle. Ride and ride comfort. [0003] The vehicle suspension system is composed of four suspension systems and their couplings. The ride comfort, handling and stability of the car are all related to the suspension system. The excitation of the road surface is transmitted to the vehicle body through the tires and the suspension, and the suspension weakens the vibration e...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F30/17G06F111/04G06F119/14
CPCG06F30/20G06F30/17G06F2111/04G06F2119/14
Inventor 齐少东白先旭祝安定李维汉
Owner HEFEI UNIV OF TECH
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