KR100784280B1 - Method for tire ride performance analysis - Google Patents

Method for tire ride performance analysis Download PDF

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KR100784280B1
KR100784280B1 KR1020060123014A KR20060123014A KR100784280B1 KR 100784280 B1 KR100784280 B1 KR 100784280B1 KR 1020060123014 A KR1020060123014 A KR 1020060123014A KR 20060123014 A KR20060123014 A KR 20060123014A KR 100784280 B1 KR100784280 B1 KR 100784280B1
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tire
wheel
ride comfort
factor
equation
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김태형
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한국타이어 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G01M17/02—Tyres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C25/00—Apparatus or tools adapted for mounting, removing or inspecting tyres
    • B60C25/002—Inspecting tyres
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00—Producing pneumatic or solid tyres or parts thereof
    • B29D30/0061—Accessories, details or auxiliary operations not otherwise provided for
    • B29D2030/0066—Tyre quality control during manufacturing

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Abstract

A method for analyzing tire ride performance is provided to reduce time for developing a tire and a vehicle by evaluating the tire ride performance with objective measuring data. A method for analyzing tire ride performance includes the steps of: deriving a ride factor suitable for each road surface by obtaining the sum of the force applied to a tire wheel axis(12); determining a tire ride evaluation factor to analyze the vibration transmitting characteristic of a tire(11) according to an evaluation item and a road condition; calculating a tire ride performance index to evaluate the tire ride performance using data obtained from the previous step; and evaluating the tire ride performance.

Description

타이어 승차감 성능분석 방법{Method for tire ride performance analysis}Method for tire ride performance analysis

도 1은 본 발명이 주행중인 차량에 적용되는 상태를 보여주는 블록도이다.1 is a block diagram showing a state in which the present invention is applied to a driving vehicle.

도 2 내지 도 5는 본 발명에 따라 인자들은 추출하여 타이어의 승차감 관련 성능들을 나타낸 그래프들이다.2 to 5 are graphs showing ride-related performances of tires by extracting factors in accordance with the present invention.

-도면의 주요부분에 대한 부호의 설명-Explanation of symbols on the main parts of the drawing

1 : 테이터 획득부 2 : 테이터 처리부1: data acquisition unit 2: data processing unit

3 : 계측기 4 : 신호 조절기3: instrument 4: signal conditioner

5 : AD(Analog to Digital)변환기 6 : 디지털 필터링5: AD (Analog to Digital) Converter 6: Digital Filtering

7 : 계측 신호 선택부 8 : 진동평가 인자 계산부7 measurement signal selector 8 vibration evaluation factor calculation unit

9 : 진동평가 지수 계산부 10 : 결과파일 생성부9: vibration evaluation index calculation unit 10: result file generation unit

11 : 타이어 12 : 휠축11: tire 12: wheel shaft

본 발명은 타이어가 차량의 승차감 성능에 미치는 영향을 평가하기 위한 타이어 승차감 성능분석 방법에 관한 것으로, 특히 타이어 개발이나 차량 개발 분야에서 주관적 평가만을 근거로 수행되고 있는 승차감 성능 관련업무를 객관적으로 평가 측정할 수 있는 타이어 승차감 성능분석 방법에 관한 것이다.The present invention relates to a tire ride performance analysis method for evaluating the effect of the tire on the ride comfort performance of the vehicle, and in particular, objectively evaluates the ride performance related tasks performed on the basis of subjective evaluation in the field of tire development or vehicle development. A tire comfort performance analysis method that can be performed.

주지된 바와 같이 타이어는 단순히 내구성만이 요구되는 것이 아니고 조종성, 안정성과 같이 승차감 성능도 좋은 것이 요구되고 있으며, 통상 차량의 승차감은 좌석시트의 안락성, 차체의 기계적 진동, 운전의 용이성, 주행도로 조건 등 다양하게 포함하고 있을 뿐만 아니라, 운전자 및 탑승자의 심리적 조건에도 크게 좌우되는 실정이다.As is well known, tires are not only required for durability, but also for a good ride comfort performance, such as maneuverability and stability, and the ride comfort of a vehicle is generally the comfort of a seat seat, mechanical vibration of the body, ease of driving, and road conditions. In addition to including a variety, such as the situation is greatly dependent on the psychological conditions of the driver and the passenger.

한편, 타이어 승차감 평가 중 주관적인 승차감 평가는 차량의 동적 승차감을 평가할 목적으로 오래전부터 수행되어 왔으나, 앞서 설명한 바와 같이 다자간 변동 및 개인적 변동으로 인하여 신뢰성 있는 평가가 이루어지기 어렵기 때문에 동적 승차감과 관련된 자동차 및 타이어 개발을 수행하는데 어려움이 있으며, 많은 시간과 인력이 소모되었다.On the other hand, subjective ride comfort evaluation during tire ride comfort evaluation has been performed for a long time for the purpose of evaluating the dynamic ride comfort of the vehicle, but as described above, since it is difficult to reliably evaluate due to multilateral and personal variations, Difficulties in developing tires have taken place, and a lot of time and manpower have been spent.

따라서 차량의 동적 승차감을 객관적 지수로 표현하려는 연구가 활발하게 수행되고 있는바, 이중 ISO 2631과 같은 차량 승차감 평가를 위한 계측방법이 제시되기도 하였다.Therefore, studies to express the dynamic ride comfort of the vehicle in an objective index have been actively conducted. Among these, a measurement method for evaluating vehicle ride comfort such as ISO 2631 has been proposed.

또한 이를 근거로 하여 대한민국 특허출원 제2005-14605호가 제안되었으나, 이와 같은 차량의 승차감을 평가하는 방법은 타이어가 차량 전체의 승차감 성능에 영향을 주는 정도의 평가에는 적합하지 않다.In addition, the Republic of Korea Patent Application No. 2005-14605 has been proposed on the basis of this, the method of evaluating the ride comfort of the vehicle is not suitable for the evaluation of the degree that the tire affects the ride comfort performance of the whole vehicle.

즉 이는 노면으로부터 타이어를 통과한 진동이 차량의 현가장치와 시트 등에 의해 영향이 감쇄됨으로써 타이어의 차량 승차감에 미치는 영향을 판단하기가 곤란하였다.In other words, it is difficult to determine the effect of the vibration passing through the tire from the road surface on the vehicle ride comfort of the tire because the influence is reduced by the suspension and seat of the vehicle.

또한, 본 출원인은 대한민국 특허출원 제2005-65226호에서 타이어 휠축에 걸리는 6방향 힘을 계측하여 타이어의 승차감에 영향을 미치는 양을 평가하는 장치를 제안하였으나 이 방법은 힘 계측 장비의 복잡성 그리고 계측 신호의 변별력의 부족으로 평가하는 데에 어려움이 생겼다.In addition, the present applicant proposed a device for measuring the amount of influence on the ride comfort of the tire by measuring the six-way force applied to the tire wheel shaft in the Republic of Korea Patent Application No. 2005-65226, but this method is the complexity of the force measuring equipment and the measurement signal Difficulties in evaluating the lack of discernment

이에 본 발명은 상기와 같은 종래 문제점을 해결하기 위해 발명된 것으로, 차량 주행시 차량의 진동을 유발하는 인자는 노면의 불균일성이 타이어를 통하여 차량의 휠축에 가해지는 힘이며, 이에 따라 나타나는 휠축에서의 가속도, 차체의 가속도 등에 의하여 승차감의 성능이 평가될 수 있다. 따라서 타이어를 통해 차량의 휠로 전달되는 힘과 휠축에서의 가속도를 계측하고, 이 휠축에 가해지는 힘과 휠축에서의 가속도의 합을 수학적으로 나타내어, 각 노면에 따라 적합한 승차감 인자를 도출하여 타이어가 차량의 승차감 성능에 미치는 영향을 평가하기 위한 타이어 승차감 성능분석 방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been invented to solve the conventional problems as described above, the factor causing the vibration of the vehicle when driving the vehicle is the force applied to the wheel shaft of the vehicle through the tire, the nonuniformity of the road surface, resulting in acceleration in the wheel shaft The performance of the ride comfort can be evaluated by the acceleration of the vehicle body. Therefore, the force transmitted to the wheels of the vehicle through the tire and the acceleration on the wheel shaft are measured, and the sum of the force applied to the wheel shaft and the acceleration on the wheel shaft is mathematically represented, and a tire comfort is obtained by deriving an appropriate riding comfort factor for each road surface. The purpose of the present invention is to provide a tire comfort performance analysis method for evaluating the effect on the ride comfort performance of a car.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조로 자세히 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명이 주행중인 차량에 적용된 상태를 나타낸 블럭도이다.1 is a block diagram showing a state in which the present invention is applied to a driving vehicle.

본 발명은 주행중인 차량의 타이어 휠축(12)에 전달되는 힘을 획득하는 데이터 획득부(1)와, 이 데이터 획득부(1)에서 얻어진 데이터를 이용하여 타이어(11)에 의한 차량의 승차감 성능을 객관적인 측정 데이터로 평가하는 알고리즘이 구축 된 데이터 처리부(2)로 구성되되, 상기 데이터 획득부(1)는 계측기(3) 신호 조절기(4) 및 AD 변환기(5)로 이루어지고, 상기 데이터 처리부(2)는 휠축(12)에 작용하는 힘 신호로부터 진동 평가 인자를 산출하고 평가지수를 계산 및 계산된 진동 평가지수를 출력하기 위해 디지털 필터링(6), 계측 신호 선택부(7), 진동평가 인자 계산부(8), 진동평가 지수 계산부(9) 및, 결과 파일 생성부(10)로 이루어져 있다.According to the present invention, the ride comfort performance of the vehicle by the tire 11 is obtained by using the data acquisition unit 1 for acquiring the force transmitted to the tire wheel shaft 12 of the vehicle being driven and the data obtained by the data acquisition unit 1. It consists of a data processing unit 2 has an algorithm for evaluating the objective measurement data, the data acquisition unit 1 is composed of a measuring instrument (3) signal conditioner (4) and AD converter (5), the data processing unit (2) digital filtering (6), measurement signal selection unit (7), vibration evaluation to calculate the vibration evaluation factor from the force signal acting on the wheel shaft 12, calculate the evaluation index and output the calculated vibration evaluation index It consists of the factor calculation part 8, the vibration evaluation index calculation part 9, and the result file generation part 10. As shown in FIG.

또한, 타이어 휠축에 가해지는 힘의 합을 구하여 각 노면에 따라 적합한 승차감 인자룰 도출하고, 타이어의 진동전달 특성을 파악하기 위한 타이어 승차감 평가 인자(VI)를 평가 항목과 도로조건에 따라 결정하며, 이 때 얻어진 데이터를 이용해 타이어의 승차감 성능을 평가하기 위한 타이어 승차감 성능 지수(RI)를 계산하여 타이어 승차감 성능 평가를 하는 것을 특징으로 한다.In addition, by calculating the sum of the force applied to the tire wheel axle to derive the appropriate ride comfort factor according to each road surface, and determine the tire ride comfort evaluation factor (VI) to grasp the vibration transmission characteristics of the tire according to the evaluation items and road conditions, The tire ride comfort performance index (RI) for evaluating the ride comfort performance of the tire is calculated using the data obtained at this time, and the tire ride comfort performance is evaluated.

상기 데이터 획득부(1)에서는 차량의 진동을 유발하는 인자가 노면의 불균일성이 타이어(11)를 통하여 차량의 휠축(12)에 가해지는 힘이고 이 힘에 의해 나타나는 휠과 차량의 가속도량으로 승차감이 평가된다. 또한, 이 휠축(12)에 가해지는 힘의 합은 다음 수학식 ①과 같이 차량의 각 질량과 가속도의 곱의 합의 의미를 가질 수 있으며, 따라서 차량 전체의 진동량을 나타낸다.In the data acquiring unit 1, the nonuniformity of the road surface is a force applied to the wheel axle 12 of the vehicle through the tire 11, and the driving force is increased by the acceleration amount of the wheel and the vehicle represented by the force. This is appreciated. In addition, the sum of the forces applied to the wheel shaft 12 may have the meaning of the sum of the product of each mass of the vehicle and the acceleration, as shown in the following equation (1), and thus represents the amount of vibration of the entire vehicle.

수학식 ①Equation ①

Figure 112006090440355-pat00001
Figure 112006090440355-pat00001

수학식 ① 에서

Figure 112006090440355-pat00002
,
Figure 112006090440355-pat00003
,
Figure 112006090440355-pat00004
은 각각 전륜 좌측 휠에 작용하는 힘 벡터와 전륜 좌측 휠의 가속도벡터 그리고 질량, In Equation ①
Figure 112006090440355-pat00002
,
Figure 112006090440355-pat00003
,
Figure 112006090440355-pat00004
Are the force vector acting on the front wheel, the acceleration vector of the front wheel, and the mass,

Figure 112006090440355-pat00005
,
Figure 112006090440355-pat00006
,
Figure 112006090440355-pat00007
은 각각 전륜 우측 휠에 작용하는 힘 벡터와 전륜 우측 휠의 가속도 벡터와 질량,
Figure 112006090440355-pat00005
,
Figure 112006090440355-pat00006
,
Figure 112006090440355-pat00007
Are the force vector acting on the front right wheel, the acceleration vector and mass of the front right wheel,

Figure 112006090440355-pat00008
,
Figure 112006090440355-pat00009
,
Figure 112006090440355-pat00010
은 각각 후륜 좌측 휠에 작용하는 힘 벡터와 후륜 좌측 휭의 가속도 벡터와 질량,
Figure 112006090440355-pat00008
,
Figure 112006090440355-pat00009
,
Figure 112006090440355-pat00010
Are the force vector acting on the rear wheel, the acceleration vector and mass of the rear wheel,

Figure 112006090440355-pat00011
,
Figure 112006090440355-pat00012
,
Figure 112006090440355-pat00013
은 각각 후륜 우측 휠에 작용하는 힘 벡터와 후륜 우측 휠의 가속도 벡터와 질량,
Figure 112006090440355-pat00011
,
Figure 112006090440355-pat00012
,
Figure 112006090440355-pat00013
Are the force vector acting on the rear right wheel, the acceleration vector and mass of the rear right wheel,

Figure 112006090440355-pat00014
과
Figure 112006090440355-pat00015
는 각 휠을 제외한 차체의 무게와 차체의 무게중심의 가속도 벡터이다.
Figure 112006090440355-pat00014
and
Figure 112006090440355-pat00015
Is the acceleration vector of the weight of the body and the center of gravity of the body, excluding each wheel.

우선 데이터는 원하는 대역의 신호를 얻기 위해 디지털 필터링(6)을 통하고, 필터링된 데이터는 타이어 진동특성을 파악하기 위한 인자(VI)로 특성화 되는데, 여기서 인자는 다음 수학식 ②로 표현되는 RMS, RMQ, VDV, Peak-to-Peak등 다양하게 나타날 수 있으며, 이러한 특성 인자는 노면의 특성에 따라 실험시 적절하게 선택되어질 수가 있다.First, the data is passed through the digital filtering (6) to obtain a signal of the desired band, the filtered data is characterized by a factor (VI) for grasping the tire vibration characteristics, where the factor is RMS, expressed by the following equation (2), RMQ, VDV, Peak-to-Peak, etc. can appear in various ways, and these characteristic factors can be appropriately selected during the experiment according to the characteristics of the road surface.

수학식 ②Equation ②

RMS (root mean square)Root mean square (RMS)

Figure 112006090440355-pat00016
Figure 112006090440355-pat00016

RMQ (root mean quad)RMQ (root mean quad)

Figure 112006090440355-pat00017
Figure 112006090440355-pat00017

VDV (vibration dose value)VDV (vibration dose value)

Figure 112006090440355-pat00018
Figure 112006090440355-pat00018

PTP (Peak-to-Peak )Peak-to-Peak (PTP)

Figure 112006090440355-pat00019
Figure 112006090440355-pat00019

Maximum peakMaximum peak

Figure 112006090440355-pat00020
Figure 112006090440355-pat00020

Maximum VelocityMaximum Velocity

Figure 112006090440355-pat00021
Figure 112006090440355-pat00021

수학식 ② 에서 X(t)는 Force 신호, 혹은 휠의 가속도 신호, 혹은 수학식 ① 에 의해 구해지는 차체의 가속도, In equation (2), X (t) is the force signal, the acceleration signal of the wheel, or the acceleration of the vehicle body obtained by the equation (1),

Tt는 측정시간,T t is the measurement time,

N은 데이터 획득수이다.N is the number of data acquisitions.

한편, 타이어(11)에 의한 진동의 변화를 잘 표현하는 계측 신호는 도로조건과 승차감 평가 항목에 따라 달라진다. 또한, 특성 변화를 잘 표현하는 분석인자도 달라진다. 따라서 도 1의 데이터 처리부의 계측 신호 선택부(7)와 진동평가 인자 계산부(8)는 평가 항목과 도로조건에 따라 신호를 선택하고 분석 인자를 결정하는 알고리즘이 포함되어 적절한 평가가 이루어 질 수 있도록 한다. On the other hand, the measurement signal which expresses the change of the vibration by the tire 11 well varies according to road conditions and riding comfort evaluation items. In addition, the analytical factors that express the change in characteristics are also different. Therefore, the measurement signal selection unit 7 and the vibration evaluation factor calculation unit 8 of the data processing unit of FIG. 1 include algorithms for selecting signals and determining analysis factors according to evaluation items and road conditions, so that an appropriate evaluation can be made. Make sure

선택되어진 타이어 승차감 평가 인자(VI)에 대해 각 인자는 얻어진 데이터의 위치(전륜, 후륜) 내지는 방향(전후방향, 수직방향, 횡방향)에 따라 적정한 가중치(ω)가 곱해져 타이어의 승차감 성능을 평가하기 위한 타이어 승차감 성능 지수(RI)가 계산되는데, 이 타이어 승차감 성능 지수(RI)는 다음 수학식 ③과 같이 계산되며 계산된 지수는 출력파일로 저장된다.With respect to the selected tire ride comfort evaluation factor VI, each factor is multiplied by an appropriate weight ω depending on the position (front wheel, rear wheel) or the direction (front, rear, vertical, and lateral directions) of the obtained data to improve the ride comfort performance of the tire. A tire comfort performance index (RI) for evaluation is calculated. The tire comfort performance index (RI) is calculated as shown in Equation (3) below and the calculated index is stored as an output file.

수학식 ③Equation ③

Figure 112006090440355-pat00022
Figure 112006090440355-pat00022

수학식 ③ 에서 VI는 타이어 승차감 평가 인자,In Equation (3), VI is a tire ride evaluation factor,

FX는 전륜 전후방향의 인자, FX is the front and rear printing

FY는 전륜 횡방향의 인자, FY is the front wheel transverse factor,

FZ는 전륜 수직방향의 인자, FZ is the front wheel vertical factor,

RX는 후륜 전후방향의 인자, RX is the rear wheel

RY는 후륜 횡방향의 인자, RY is the rear wheel transverse factor,

RZ는 후륜 수직방향의 인자를 나타낸다.RZ represents a factor in the rear wheel vertical direction.

이와 같은 방식으로 타이어 승차감을 분석할 수 있는데, 도 2 내지 도 5는 인자들을 추출하여 타이어의 승차감 관련성능을 나타낸 그래프들로서, 도 2, 3, 4는 돌기를 지나는 때의 휠축에 작용하는 전후방향 힘과 휠축의 가속도를 나타낸 것으로 돌기 통과시 전달되는 힘과 가속도의 Peak to Peak 값, 초기 그래프 형상, RMS값, 주파수 혹은 시간별 RMS값 등의 인자로 타이어의 승차감 성능을 평가할 수 있다.In this way, it is possible to analyze the tire ride comfort, Figures 2 to 5 are graphs showing the performance related to the ride comfort of the tire by extracting the factors, Figures 2, 3, 4 is the front and rear direction acting on the wheel shaft when passing through the projection It shows the force and acceleration of the wheel axle. The tire comfort performance can be evaluated by factors such as the peak to peak value of the force and acceleration transmitted when the protrusion passes, the initial graph shape, the RMS value, the frequency or the RMS value over time.

또한, 도 5는 일반 도로를 주행중의 휠에 작용하는 전후 방향 및 수직방향 힘을 계측한 것으로 힘 또는 가속도의 주파수별 RMS값, RMQ값 등을 이용하여 타이어 승차감 성능을 평가할 수 있다.In addition, FIG. 5 is a measure of the front and rear and vertical force acting on the wheel while driving a general road, it is possible to evaluate the tire ride comfort performance using the RMS value, the RMQ value, etc. of the frequency of the force or acceleration.

상기와 같이 본 발명에 따른 타이어 승차감 성능분석 방법은 휠에 작용하는 힘과 휠축에서의 가속도를 계측하여 타이어의 승차감 성능을 평가하는 방법을 이용하면 기존의 주관적인 평가에 의존하던 타이어 승차감 성능 평가를 객관적인 계측 데이터로서 평가함으로써 더욱 향상된 타이어를 개발할 수 있고, 아울러 타이어 및 차량 개발기간을 단축할 수 있다.As described above, the tire ride comfort performance analysis method according to the present invention is an objective evaluation of the tire ride comfort performance, which was dependent on the existing subjective evaluation by using the method of evaluating the ride comfort performance of the tire by measuring the force acting on the wheel and the acceleration in the wheel shaft. By evaluating as measurement data, it is possible to develop more improved tires and shorten the tire and vehicle development period.

Claims (4)

타이어 휠축에 가해지는 힘의 합을 구하여 각 노면에 따라 적합한 승차감 인자를 도출하고, 타이어의 진동전달 특성을 파악하기 위한 타이어 승차감 평가 인자(VI)를 평가 항목과 도로조건에 따라 결정하며, 이 때 얻어진 데이터를 이용해 타이어의 승차감 성능을 평가하기 위한 타이어 승차감 성능 지수(RI)를 계산하여 타이어 승차감 성능 평가를 하는 것을 특징으로 하는 타이어 승차감 성능분석 방법.By calculating the sum of the force applied to the tire wheel axle, a suitable ride comfort factor is derived for each road surface, and a tire ride comfort evaluation factor (VI) for determining the vibration transmission characteristics of the tire is determined according to the evaluation items and road conditions. A tire ride comfort performance analysis method characterized by calculating tire ride comfort performance index (RI) for evaluating ride comfort performance of a tire using the obtained data. 제 1 항에 있어서,The method of claim 1, 상기 타이어 휠축에 가해지는 힘의 합은 수학식 ①과 같이 차량의 각 질량과 가속도의 곱의 합의 의미를 가질 수 있으며, 차량의 진동을 유발하는 인자가 노면의 불균일성이 타이어(11)를 통하여 차량의 휠축(12)에 가해지는 힘이고 이 힘에 의해 나타나는 휠과 차량의 가속도량으로 승차감이 평가되는 것을 특징으로 하는 타이어 승차감 성능분석 방법.The sum of the force applied to the tire wheel shaft may have the meaning of the sum of the product of each mass and the acceleration of the vehicle as shown in Equation (1), and the nonuniformity of the road surface through the tire 11 is a factor that causes the vibration of the vehicle. The tire ride comfort performance analysis method, characterized in that the riding comfort is evaluated by the force applied to the wheel shaft (12) of the wheel and the acceleration amount of the wheel and the vehicle represented by this force. 수학식 ①Equation ①
Figure 112007085337906-pat00023
Figure 112007085337906-pat00023
 수학식 ① 에서In Equation ①
Figure 112007085337906-pat00036
,
Figure 112007085337906-pat00037
,
Figure 112007085337906-pat00038
은 각각 전륜 좌측 휠에 작용하는 힘 벡터와 전륜 좌측 휠의 가속도벡터 그리고 질량,
Figure 112007085337906-pat00036
,
Figure 112007085337906-pat00037
,
Figure 112007085337906-pat00038
Are the force vector acting on the front wheel, the acceleration vector of the front wheel, and the mass,
Figure 112007085337906-pat00039
,
Figure 112007085337906-pat00040
,
Figure 112007085337906-pat00041
은 각각 전륜 우측 휠에 작용하는 힘 벡터와 전륜 우측 휠의 가속도 벡터와 질량,
Figure 112007085337906-pat00039
,
Figure 112007085337906-pat00040
,
Figure 112007085337906-pat00041
Are the force vector acting on the front right wheel, the acceleration vector and mass of the front right wheel,
Figure 112007085337906-pat00042
,
Figure 112007085337906-pat00043
,
Figure 112007085337906-pat00044
은 각각 후륜 좌측 휠에 작용하는 힘 벡터와 후륜 좌측 휭의 가속도 벡터와 질량,
Figure 112007085337906-pat00042
,
Figure 112007085337906-pat00043
,
Figure 112007085337906-pat00044
Are the force vector acting on the rear wheel, the acceleration vector and mass of the rear wheel,
Figure 112007085337906-pat00045
,
Figure 112007085337906-pat00046
,
Figure 112007085337906-pat00047
은 각각 후륜 우측 휠에 작용하는 힘 벡터와 후륜 우측 휠의 가속도 벡터와 질량,
Figure 112007085337906-pat00045
,
Figure 112007085337906-pat00046
,
Figure 112007085337906-pat00047
Are the force vector acting on the rear right wheel, the acceleration vector and mass of the rear right wheel,
Figure 112007085337906-pat00048
과
Figure 112007085337906-pat00049
는 각 휠을 제외한 차체의 무게와 차체의 무게중심의 가속도 벡터이다.
Figure 112007085337906-pat00048
and
Figure 112007085337906-pat00049
Is the acceleration vector of the weight of the body and the center of gravity of the body, excluding each wheel. 제 1 항에 있어서,The method of claim 1, 상기 타이어의 진동전달 특성을 파악하기 위한 타이어 승차감 평가 인자(VI)는 수학식 ②로 표현되는 RMS, RMQ, VDV, Peak-to-Peak등 다양하게 나타날 수 있으며, 이러한 특성 인자는 노면의 특성에 따라 실험시 적절하게 선택되어지는 것을 특징으로 하는 타이어 승차감 성능분석 방법.Tire ride comfort evaluation factor (VI) to grasp the vibration transmission characteristics of the tire can be variously represented, such as RMS, RMQ, VDV, Peak-to-Peak represented by equation (2), and these characteristic factors According to the experiment, tire ride comfort performance analysis method characterized in that it is properly selected. 수학식 ②Equation ② RMS (root mean square)Root mean square (RMS)
Figure 112007085337906-pat00024
Figure 112007085337906-pat00024
 RMQ (root mean quad)RMQ (root mean quad)
Figure 112007085337906-pat00025
Figure 112007085337906-pat00025
 VDV (vibration dose value)VDV (vibration dose value)
Figure 112007085337906-pat00026
Figure 112007085337906-pat00026
 PTP (Peak-to-Peak )Peak-to-Peak (PTP)
Figure 112007085337906-pat00027
Figure 112007085337906-pat00027
 Maximum peakMaximum peak
Figure 112007085337906-pat00028
Figure 112007085337906-pat00028
 Maximum VelocityMaximum Velocity
Figure 112007085337906-pat00029
Figure 112007085337906-pat00029
 수학식 ② 에서 In equation ② X(t)는 Force 신호, 혹은 휠의 가속도 신호, 혹은 수학식 ① 에 의해 구해지는 차체의 가속도, X (t) is the force signal, the acceleration signal of the wheel, or the acceleration of the vehicle body obtained by the equation (1), Tt는 측정시간,T t is the measurement time, N은 데이터 획득수이다.N is the number of data acquisitions. 제 1 항에 있어서,The method of claim 1, 상기 타이어의 승차감 성능을 평가하기 위한 타이어 승차감 성능 지수(RI)는 타이어 승차감 평가 인자(VI)에 대해 각 인자는 얻어진 데이터의 위치(전륜, 후륜) 내지는 방향(전후방향, 수직방향, 횡방향)에 따라 적정한 가중치(ω)가 곱해져 수학식 ③과 같이 타이어의 승차감 성능을 평가하기 위한 타이어 승차감 성능 지수(RI)가 계산되어지는 것을 특징으로 하는 타이어 승차감 성능분석 방법.The tire ride comfort performance index (RI) for evaluating the ride comfort performance of the tire is determined based on the tire ride comfort evaluation factor (VI), where each factor is the position (front wheel, rear wheel) or the direction (front, rear, vertical and transverse directions) of the obtained data. Tire ride comfort performance index (RI) for evaluating the ride comfort performance of the tire as shown in equation (3) is calculated. 수학식 ③Equation ③
Figure 112007085337906-pat00030
Figure 112007085337906-pat00030
 수학식 ③ 에서 In Equation ③ VI는 타이어 승차감 평가 인자,VI is a tire comfort rating factor, FX는 전륜 전후방향의 인자, FX is the front and rear printing FY는 전륜 횡방향의 인자, FY is the front wheel transverse factor, FZ는 전륜 수직방향의 인자, FZ is the front wheel vertical factor, RX는 후륜 전후방향의 인자, RX is the rear wheel RY는 후륜 횡방향의 인자, RY is the rear wheel transverse factor, RZ는 후륜 수직방향의 인자를 나타낸다.RZ represents a factor in the rear wheel vertical direction.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101327666B1 (en) * 2012-09-04 2013-11-12 금호타이어 주식회사 A method on the evaluation of ride comfort using accelerator sensor
KR101338828B1 (en) * 2013-07-30 2013-12-06 군산대학교산학협력단 Tire handling performance evaluation method and system

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Publication number Priority date Publication date Assignee Title
KR20020076342A (en) * 2000-12-30 2002-10-09 로베르트 보쉬 게엠베하 System and method for monitoring the vehicle dynamics of a vehicle
KR20050014605A (en) * 2003-07-31 2005-02-07 김승한 Dynamic Ride-Comfort Analysis System
KR100665270B1 (en) 2005-07-19 2007-01-04 한국타이어 주식회사 Tire ride performance analysis apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020076342A (en) * 2000-12-30 2002-10-09 로베르트 보쉬 게엠베하 System and method for monitoring the vehicle dynamics of a vehicle
KR20050014605A (en) * 2003-07-31 2005-02-07 김승한 Dynamic Ride-Comfort Analysis System
KR100665270B1 (en) 2005-07-19 2007-01-04 한국타이어 주식회사 Tire ride performance analysis apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101327666B1 (en) * 2012-09-04 2013-11-12 금호타이어 주식회사 A method on the evaluation of ride comfort using accelerator sensor
KR101338828B1 (en) * 2013-07-30 2013-12-06 군산대학교산학협력단 Tire handling performance evaluation method and system

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