scholarly journals A Basic Study on Sound Control System for Ultra-Compact Electric Vehicle by Using Masking

2020 ◽  
Vol 10 (10) ◽  
pp. 3412
Author(s):  
Taro Kato ◽  
Hiroya Nakayama ◽  
Hideaki Kato ◽  
Takayoshi Narita
Keyword(s):  
Heart Rate ◽  
Electric Vehicle ◽  
Driving Simulator ◽  
Ride Comfort ◽  
Active Noise Control ◽  
Interior Space ◽  
Basic Study ◽  
Brain Wave ◽  
Sound Control ◽  
Appearance Rate

In this study, we conducted a quantitative evaluation of the comfort of the interior of an electric vehicle (EV) using the brain wave appearance rate, which is part of the human biologic information that the initial stage of the proposed active noise control (ANC) system for ultra-compact EVs reveals. EVs have become easy-to-use mobility solutions and have been researched and actively developed focusing on using music characteristics. We performed fundamental testing of music including 1/f fluctuation for the evaluation of ride comfort based on the relationship between the participant’s heart rate and tempo of music using a driving simulator. The results suggest that if a passenger listened to music including a 1/f fluctuation, then he/she could relax. Thus, it was concluded that if we could pre-grasp the passenger’s biologic information of the heart rate and beats per minute for masking, then the comfort in the interior space could be improved even when using a driving simulator.

scholarly journals A Fundamental Consideration of Active Noise Control System by Small Actuator for Ultra-Compact EV

Actuators ◽  
2018 ◽  
Vol 7 (3) ◽  
pp. 49 ◽  
Author(s):  
Taro Kato ◽  
Ryosuke Suzuki ◽  
Rina Miyao ◽  
Hideaki Kato ◽  
Takayoshi Narita
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Noise Control ◽  
Active Noise Control ◽  
Wind Noise ◽  
Interior Space ◽  
Feedback Control Systems ◽  
Magnetostrictive Actuator ◽  
Distance Travel ◽  
Fundamental Consideration

The ultra-compact electric vehicle has recently experienced increasing popularity for short-distance travel. However, one of the issues with ultra-compact electric vehicles is that although the engine is silent, exterior road and wind noise have a significant impact on the occupant's comfort in the interior space. We propose an ANC system whereby a kind of small actuator is installed on the roof of an ultra-compact electric vehicle. In this paper, we consider the noise control effects of using a giant magnetostrictive actuator and conduct an experimental study on feed-forward and feedback control systems.

scholarly journals Ride Comfort Control System Considering Physiological and Psychological Characteristics: Effect of Masking on Vertical Vibration on Passengers

Actuators ◽  
2018 ◽  
Vol 7 (3) ◽  
pp. 42 ◽  
Author(s):  
Keigo Ikeda ◽  
Ayato Endo ◽  
Ryosuke Minowa ◽  
Takayoshi Narita ◽  
Hideaki Kato
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Ride Comfort ◽  
Control Method ◽  
Vertical Vibration ◽  
Psychological Characteristics ◽  
Psychological State ◽  
Vibration Acceleration ◽  
Seat Suspension ◽  
Vibration Stress

Active seat suspension has been proposed to improve ride comfort for ultra-compact mobility. Regarding the ride comfort of passengers due to vertical vibration, the authors have confirmed from biometry measurements that reduction of the vibration acceleration does not always produce the best ride comfort for passengers. Therefore, heart rate variability that can quantitatively reflect stress is measured in real time, and a control method was proposed that feeds back to active suspension and confirms its effectiveness by fundamental verification. In this paper, we will confirm the influence of the vibration stress on the psychological state of the occupant by the masking method.

scholarly journals Study on Pre-Deceleration Running in Encounters with Emergency Vehicles Using Vehicle to Vehicle Communications

2019 ◽  
Vol 18 (3) ◽  
pp. 381-390
Author(s):  
Hideaki Nanba ◽  
Manabu Sawada ◽  
Koji Oguri
Keyword(s):  
Experimental Data ◽  
Driving Simulator ◽  
Ride Comfort ◽  
Red Light ◽  
Emergency Vehicle ◽  
Automated Driving ◽  
Vehicle Communication ◽  
Vehicle To Vehicle ◽  
Vehicle To Vehicle Communication ◽  
Emergency Vehicles

AbstractThere is a problem of coordination in encounters with an emergency vehicle when an automated driving vehicle travels on public roads. Effectiveness of the pre-deceleration running based on the earlier recognition of emergency vehicle using vehicle to vehicle communication is studied from the viewpoint of safety and ride comfort. Experimental data of the driver’s maneuver and vehicle’s status are collected and analyzed using the driving simulator. Recognition by vehicle to vehicle communication (V2V for short) leads to pre-deceleration and improves deceleration and jerk as compared to siren sound and red light of emergency vehicles.

Basic Study on Active Noise Control Based on Wavefront Synthesis

2018 ◽  
Vol 2018.28 (0) ◽  
pp. 124
Author(s):  
Keisuke SAKIMA ◽  
Xun WANG ◽  
Yohsuke KOBA ◽  
Satoshi ISHIKAWA ◽  
Shinya KIJIMOTO
Keyword(s):  
Noise Control ◽  
Active Noise Control ◽  
Basic Study ◽  
Active Noise

20405 Basic Study on Active Control of Noise Transmission by Giant Magnetostrictive Actuator for Ultra-Compact Electric Vehicle

2015 ◽  
Vol 2015.21 (0) ◽  
pp. _20405-1_-_20405-2_
Author(s):  
Taro KATO ◽  
Ryosuke SUZUKI ◽  
Takayoshi NARITA ◽  
Hideaki KATO ◽  
Yoshio YAMAMOTO
Keyword(s):  
Electric Vehicle ◽  
Active Control ◽  
Basic Study ◽  
Noise Transmission ◽  
Magnetostrictive Actuator
Sign in / Sign up

Export Citation Format

Share Document