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Method for optimizing braking force distribution in electro-hydraulic compound braking system

A braking force distribution and braking system technology, applied in electric braking systems, electric vehicles, genetic models, etc., can solve problems such as unreliable braking stability

Active Publication Date: 2017-10-17
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

Faced with the reality of increasing vehicle weight, vehicle speed and working conditions, this braking method has gradually revealed its disadvantages of unreliable braking stability. high demands on safety

Method used

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  • Method for optimizing braking force distribution in electro-hydraulic compound braking system
  • Method for optimizing braking force distribution in electro-hydraulic compound braking system
  • Method for optimizing braking force distribution in electro-hydraulic compound braking system

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Embodiment Construction

[0064] In order to solve the above technical problems, the purpose of the present invention is: according to the requirements of different pure electric vehicles or a certain pure electric vehicle for braking stability and braking energy recovery efficiency, in the electromechanical hybrid braking area, the vehicle can The braking stability and braking energy recovery efficiency in the vehicle are optimized.

[0065] Such as figure 1 Shown, the purpose of the present invention is achieved through the following technical solutions:

[0066] A method for optimizing braking force distribution in an electro-hydraulic compound braking system, characterized in that it comprises steps in the following order:

[0067] S1. Determine the objective function and establish a corresponding fitness function;

[0068] S2. Initialize the particle swarm;

[0069] S3, update the inertia factor and the position and velocity of each particle, and calculate the fitness value of each particle;

...

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Abstract

The invention provides a method for optimizing braking force distribution in an electro-hydraulic compound braking system, belongs to the technical field of electro-hydraulic compound braking and relates to the field of swarm intelligent algorithms. According to the requirements of pure electric vehicle of different types or pure electric vehicles of a certain type for the braking stability and braking energy recycling efficiency, the contradictory relation of the braking stability and the braking energy recycling efficiency to a certain extent in an electromechanical hybrid braking area is comprehensively considered; and the parameter of the electro-hydraulic compound braking system is optimized through an improved particle swarm algorithm with the high global searching ability, an adaptability function serving as the optimizing judgment standard is established, and the historical global optimum value of a particle swarm is obtained and serves as the parameter meeting the needed electro-hydraulic compound braking system. The algorithm is simple, the global searching ability is high, the convergence rate is high, the braking stability of vehicles in the braking process is guaranteed, and meanwhile braking energy of a motor is recycled to the largest extent.

Description

technical field [0001] The invention belongs to the technical field of electro-hydraulic composite braking, and at the same time relates to the field of swarm intelligence algorithms, in particular to a method for optimizing the distribution of braking force in an electro-hydraulic composite braking system. Background technique [0002] The braking system of traditional vehicles simply uses hydraulic braking, and the brake fluid enters the brake wheel cylinder to generate braking pressure. Faced with the reality of increasing vehicle weight, vehicle speed and working conditions, this braking method has gradually revealed its disadvantages of unreliable braking stability. high demands on safety. Therefore, in order to solve this problem, the electro-hydraulic compound brake system came into being. [0003] The optimization problem of the electro-hydraulic hybrid braking system is a multi-objective optimization problem. There is a contradictory complex relationship between t...

Claims

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Application Information

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IPC IPC(8): B60L7/26G06N3/12
Inventor 连晋毅藏学辰张喜清王俊峰马旭
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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