NVH management system based on floor vibration for vehicle and control method thereof

Patent metadata

Field	Value
Publication number	US-10167801-B2
Application number	US-201715610584-A
Country	US
Kind code	B2
Filing date	May 31, 2017
Priority date	Dec 16, 2016
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A system for managing noise, vibration and harshness (NVH) based on floor vibration for a vehicle, may include a vibration sensor, which is disposed on a floor of a vehicle and detects a vibration value; and a control module, which controls an operation of a vibration generating device of the vehicle in response to the vibration value detected by the vibration sensor, wherein when the vibration value detected by the vibration sensor exceeds a predetermined first threshold value, the control module decreases the vibration by adjusting a driving parameter of the vibration generating device of the vehicle.

First claim

What is claimed is:

1. A system for managing noise, vibration and harshness (NVH) based on floor vibration for a vehicle, the system comprising:
a vibration sensor, which is disposed on a floor of the vehicle and is configured to detect a vibration value thereof;
a control module, which controls an operation of a vibration generating device of the vehicle in response to the vibration value detected by the vibration sensor; and
a display module, which is configured to receive a message and to display information,
wherein when the vibration value detected by the vibration sensor exceeds a predetermined first threshold value, the control module is configured to decrease the vibration by adjusting a driving parameter of the vibration generating device of the vehicle, and
wherein when the vibration value detected by the vibration sensor exceeds a predetermined second threshold value, the control module is configured to generate and output a notice message including information inducing a check of an NVH system and to transmit the notice message to the display module.

2. The system of claim 1 , wherein the control module is configured to control the operation of the vibration generating device through at least one of a control of an opening amount of an air control valve (ACV) of the vehicle, a control of revolutions per minute (RPM) of an engine, and a control of electronic control unit (ECU) injection variable mapping.

3. The system of claim 1 , wherein the control module is configured to filter a band of a predetermined frequency or less in the vibration value detected and received from the vibration sensor, is configured to determine a root mean square (RMS) value, and is configured to obtain the vibration value.

4. The system of claim 1 , wherein the first threshold value set in the control module is a vibration value pre-detected by the vibration sensor and stored in a state between an idle state during initial driving of the vehicle and an idle state after a predetermined travelling distance of the vehicle.

5. The system of claim 1 , wherein the vibration value detected by the vibration sensor includes a vibration value in each of x-axis, y-axis, and z-axis directions.

6. The system of claim 5 , wherein the control module is configured to obtain the vibration value by determining an average of the vibration values in the x-axis, y-axis, and z-axis directions detected by the vibration sensor.

7. A method of controlling the system for managing noise, vibration and harshness (NVH) based on floor vibration for the vehicle of claim 1 , the method including:
pre-setting the first threshold value in the control module;
detecting, by the vibration sensor, the vibration within the vehicle and outputting the vibration value;
receiving, by the control module, the vibration value from the vibration sensor;
comparing, by the control module, the received vibration value with the first threshold value; and
controlling, by the control module, an operation of the vibration generating device wherein the vibration generated in the vibration generating device of the vehicle is decreased when the vibration value detected by the vibration sensor exceeds the first threshold value.

8. The method of claim 7 , further including:
setting the predetermined second threshold value detectable by the vibration sensor in the control module;
comparing, by the control module, the vibration value received from the vibration sensor with the second threshold value; and
generating and outputting, by the control module, the notice message inducing the check of the NVH system when the vibration value received from the vibration sensor exceeds the second threshold value.

9. The method of claim 7 , wherein the controlling, by the control module, the operation of the vibration generating device so that the vibration generated in the vibration generating device of the vehicle is decreased when the vibration value detected by the vibration sensor exceeds the first threshold value in a travelling state of the vehicle includes at least one of
a) controlling a quantity of closing of an air control valve (ACV);
b) controlling revolutions per minutes (RPM) of an engine; and
c) controlling electronic control unit (ECU) injection variable mapping.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Jung In-Soo

Classifications

• G07C5/006

  Indicating maintenance · CPC title

• F02D41/1498 Primary

  measuring engine roughness · CPC title

• F02D41/0002

  Controlling intake air · CPC title

• F02D41/3005

  Details not otherwise provided for · CPC title

• F02D2009/0233

  Engine vibration · CPC title