Control system design for occupant lower extremity protection using semi-active knee bolster

Terumasa Narukawa, Hidekazu Nishimura

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper presents control system design for occupant lower extremity protection in the event of a frontal car crash. A semi-active knee bolster is used to protect occupant lower extremities. The semi-active knee bolster varies the damping coefficient of the knee bolster. The control system design of the semi-active knee bolster is based on a design method of an active knee bolster. LQI (Linear Quadratic Integration) control with an initial value compensation input is applied. We obtain an optimal reference signal of the contact force between the knees and the instrument panel by considering characteristics of the semi-active actuator and the closed loop control system. The control system of the semi-active knee bolster follows the reference signal of the contact force. The protective control system with the semi-active knee bolster is effective for reducing the femur load, verified by carrying out simulations and experiments.

Original languageEnglish
Pages (from-to)1711-1722
Number of pages12
JournalNihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C
Volume78
Issue number789
DOIs
Publication statusPublished - 2012

Fingerprint

Systems analysis
Control systems
Instrument panels
Closed loop control systems
Railroad cars
Actuators
Damping
Experiments

Keywords

  • Automobile
  • Occupant Protection
  • Semi-Active Knee Bolster
  • Shock Control

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Industrial and Manufacturing Engineering

Cite this

@article{a8cbc735ae56423291a2029702016d39,
title = "Control system design for occupant lower extremity protection using semi-active knee bolster",
abstract = "This paper presents control system design for occupant lower extremity protection in the event of a frontal car crash. A semi-active knee bolster is used to protect occupant lower extremities. The semi-active knee bolster varies the damping coefficient of the knee bolster. The control system design of the semi-active knee bolster is based on a design method of an active knee bolster. LQI (Linear Quadratic Integration) control with an initial value compensation input is applied. We obtain an optimal reference signal of the contact force between the knees and the instrument panel by considering characteristics of the semi-active actuator and the closed loop control system. The control system of the semi-active knee bolster follows the reference signal of the contact force. The protective control system with the semi-active knee bolster is effective for reducing the femur load, verified by carrying out simulations and experiments.",
keywords = "Automobile, Occupant Protection, Semi-Active Knee Bolster, Shock Control",
author = "Terumasa Narukawa and Hidekazu Nishimura",
year = "2012",
doi = "10.1299/kikaic.78.1711",
language = "English",
volume = "78",
pages = "1711--1722",
journal = "Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C",
issn = "0387-5024",
publisher = "Japan Society of Mechanical Engineers",
number = "789",

}

TY - JOUR

T1 - Control system design for occupant lower extremity protection using semi-active knee bolster

AU - Narukawa, Terumasa

AU - Nishimura, Hidekazu

PY - 2012

Y1 - 2012

N2 - This paper presents control system design for occupant lower extremity protection in the event of a frontal car crash. A semi-active knee bolster is used to protect occupant lower extremities. The semi-active knee bolster varies the damping coefficient of the knee bolster. The control system design of the semi-active knee bolster is based on a design method of an active knee bolster. LQI (Linear Quadratic Integration) control with an initial value compensation input is applied. We obtain an optimal reference signal of the contact force between the knees and the instrument panel by considering characteristics of the semi-active actuator and the closed loop control system. The control system of the semi-active knee bolster follows the reference signal of the contact force. The protective control system with the semi-active knee bolster is effective for reducing the femur load, verified by carrying out simulations and experiments.

AB - This paper presents control system design for occupant lower extremity protection in the event of a frontal car crash. A semi-active knee bolster is used to protect occupant lower extremities. The semi-active knee bolster varies the damping coefficient of the knee bolster. The control system design of the semi-active knee bolster is based on a design method of an active knee bolster. LQI (Linear Quadratic Integration) control with an initial value compensation input is applied. We obtain an optimal reference signal of the contact force between the knees and the instrument panel by considering characteristics of the semi-active actuator and the closed loop control system. The control system of the semi-active knee bolster follows the reference signal of the contact force. The protective control system with the semi-active knee bolster is effective for reducing the femur load, verified by carrying out simulations and experiments.

KW - Automobile

KW - Occupant Protection

KW - Semi-Active Knee Bolster

KW - Shock Control

UR - http://www.scopus.com/inward/record.url?scp=84862175842&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862175842&partnerID=8YFLogxK

U2 - 10.1299/kikaic.78.1711

DO - 10.1299/kikaic.78.1711

M3 - Article

VL - 78

SP - 1711

EP - 1722

JO - Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C

JF - Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C

SN - 0387-5024

IS - 789

ER -