Driving comfort evaluation method

An evaluation method and technology for comfort, applied in the field of driving comfort evaluation, which can solve problems such as unsafety, nausea, vomiting, and discomfort of occupants in the car

Pending Publication Date: 2020-10-23
TRAFFIC SCI & TECH INST JIANGXI PROV
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Problems solved by technology

[0002] A large number of facts show that when the car is running, if the body vibrates relatively strongly, it will cause discomfort such as nausea and vomiting to the occupants of the car, and research has further shown that even if the vibration is not strong, if the human body is exposed to vibration for a long time You will also feel tired and weak, which is undoubtedly uncomfortable and even unsafe for the driver.

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Embodiment Construction

[0024] The implementation of the present invention will be described in detail below with reference to the drawings and examples, so as to fully understand and implement the implementation process of how to use technical means to solve technical problems and achieve technical effects in the present invention.

[0025] A method for evaluating driving comfort, said method comprising the following steps,

[0026] S1. Determine the direction of vibration;

[0027] S2. Determine the intensity of vibration in each vibration direction: the intensity of vibration is represented by the root mean square value of acceleration, and the unit is m / s 2 , whose expression is:

[0028]

[0029] Where: a(t)—is the time-history curve of the acceleration of the vehicle model;

[0030] T—the total time it takes for a vehicle to cross the bridge;

[0031] Through the above formula, we can get that the greater the vibration intensity, that is, the greater the vibration acceleration value, the ...

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Abstract

The invention discloses a driving comfort evaluation method, and the method comprises the following steps: S1, determining a vibration direction; S2, determining the intensity of the vibration in eachvibration direction: wherein the vibration intensity is expressed by an acceleration root-mean-square value, and the unit is m/s2, S3, adopting a 1/3 octave method to carry out spectral analysis on the vibration signal with the 1/3 octave center frequency, and obtaining an evaluation index; and S4, giving different vibration limit values according to different vibration time. According to the invention, the acceleration root-mean-square value is converted from the time domain to the frequency domain for spectral analysis so that the acceleration amplitude is associated with the frequency, andthe evaluation result is more real and reliable.

Description

technical field [0001] The invention relates to the technical field of evaluation methods, in particular to a method for evaluating driving comfort. Background technique [0002] A large number of facts show that when the car is running, if the body vibrates relatively strongly, it will cause discomfort such as nausea and vomiting to the occupants of the car, and research has further shown that even if the vibration is not strong, if the human body is exposed to vibration for a long time Also can feel tired, weak, this undoubtedly is uncomfortable, even unsafe for the driver. The proposed concept of driving comfort is an index to judge whether the occupants feel discomfort or fatigue due to body vibration when the car is running, and how much discomfort is caused, also known as ride comfort. There are many factors that affect ride comfort, including objective factors such as external vibrations, as well as people's own subjective feelings. Therefore, in the research process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/06G01M17/007
CPCG01M17/007G01M17/06
Inventor 张卫国张志勇赖毅李德慧韩志星周叶军李从财刘焱朱斌洪宜阳邵文达田亚威莫松
Owner TRAFFIC SCI & TECH INST JIANGXI PROV
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