Abstracts / JSAE Review 17 (1996) 435-458 441

Our observations included better ways to send information to the customer, use as Marketing tool and characteristics of the Interuet-User.

9632505 PC-Card Applied Navigation System and its Communica- tion Function Enhancement - MIUT with Mobile Multimedia Tech- niques - Michima Ogawa (Nippondenso Co., Ltd.)

Mobile workers have uniquely developed their in-vehicle-use comput- ers as business tools and have been requesting a mobile computer with the location or map navigation function. Nippondenso has developed the Mobile Information Unit and Terminal: MIUT and proposed it to create a new market segment, besides the in-vehicle navigation, aiming at various mobile uses. The MIUT has two PC-card slots, and this paper focuses on the HD-card applied navigation function and tele-data function in use of a digital communication PC-card with the MIUT Information Center. Our concept of MIUT will provide more information to a vehicle because of its location/communication ability and flexibility in use of standardized PC-card interface with Mobile Multimedia Techniques.

9632514 A New Way of Trouble Shooting the Wire Harness - From Drawing Board to Service Rack - Dwight Anderson (Hewlett-Packard Co.)

Failures in to automobile cable harnesses account for at least 30% of all automotive elecq'onics failures, and contribute over 50% of the electronic control modules (ECUs) returned to the factory which are marked "no trouble found."

This paper discusses the use of Wave Signature Analysis (WSA) and Time Domain Reflectometry (TDR) ~ to detect actual and potential fail- ures in cable harnesses. "Fai lures" here include not only the normal faults of the harness, connectors, sensors, and actuators, but also the loading effects and variability of wires that induce failures in ECUs. The technique can be employed throughout the cycle of harness life - - design and characterization, production testing, and diagnosis in the service bay.

Solving these interconnected problems in the automobile will result in faster prototype development, better assembly line testing, and more accurate service diagnosis. The technology can either be employed as a stand-alone system or incorporated directly into the ECU module.

9632523 Adjustment Technique for Air Flow Sensor of Vehicle - Developement of Auto Adjustment Technique for Hybrid IC - Takeshi Shirato, Hideaki Arita, Kaoru Uchiyama (Hitachi, Ltd.)

We developed an automatic adjustment machinery in order to im- prove the air flow rate characteristics and productivity of the air flow meter. We succeeded in measuring the air flow within 0.5% deviation and in finishing total adjustment within 60 sec./piece. This equipment incor- porates the following techniques: correcting method for air flow measur- ing deviation caused mainly by the change of sonic nozzle unit and optimized algorithm for cycle time reduction at the functional trimming process of HyIC substrate.

9632532 High Performance and a Miniaturized Ignition Equipment with Integrat ion of Semiconductor Devices Yutaka Ohashi, Mitsuru Koiwa, Masayuki Ikeuchi (Mitsubishi Electric Corporation)

In order to realize the miniaturization, weight reduction and cost reduction overall, and to improve the electrical connection reliability, the integrated ignition equipment was developed. The technical contents and features of the distributor with ignition coil and driver and the ignition coil with integrated driver, integration of semiconductor devices and rationalized design for production are reported.

9632541 On the Relationships between Rider, a Two Wheeled Vehi- cle and the Vehicle Handl ing Ichiro Kageyama (Nihon University)

This paper describes the human factors for behavior of a rider and two wheeled vehicle system. The human factor is divided into three parts. The first is to fmd the dynamics of human body, the second is what is a main input for the rider to control the vehicle and the last is to find the control algorithm of the rider to the vehicle. For the first, it is shown that

the dynamic effects of rider's arms can be given by equivalent mechani- cal elements. For the second, it is found that the main input of the rider to the vehicle behavior is the steering torque. For the last, it is found that the rider always changes his main information to decide the steering torque, which is the main output, depending on the position in the course.

9632550 A Simulation Model for Rider ' s Control Behaviors Tsuyoshi Katayama, Tomoo Nishimi, Takumi Okayama, Akira Aoki (Japan Auto- mobile Research Institute)

Basic control model for motorcycle riders is proposed. This basic model is applied to five typical running tasks in order to discuss suitability of the model. The five running tasks are slalom, lane change, transient obstacle avoidance, running through cross wind and low speed running. It is shown that the basic model can be used for these tasks when the model is modified slightly.

9632569 Motorcycle-Rider System Dynamics by Multibody Dynam- ics Analysis - Effects of Frame Stiffness and Tire Characterist ic on Weab Mode - Hirohide Imaizumi, Takehiko Fujioka (The University of Tokyo)

In this paper, a motorcycle-rider system model which includes frame stiffness, suspension system and rider control was constructed by multi- body dynamics analysis (MDA). In this model, left and right hands of a rider are connected to the handle-grip points with bush elements. Straight running and curving pulse response tests under the high speed range and lane changing tests are simulated by use of this model. The simulation results are compared with the experimental data. Parameter study is also done under a variety of frame stiffness and tire forces.

9632578 Experimental Studies on a New Suspension System Using a Longitudinal Swinging Mechanism Hirotetsu Motobu, Koji Yoshioka (Minami Kyoto Lab of System Science), Akira Kanno (Kobe Design University)

To reduce the shock and improve the safety when a motorcycle has a front collision, the authors have created a new suspension system using a longitudinal swinging mechanism. The experimental results show that the impact force on the motorcycle decreased by approximately 30% when compared with ordinary motorcycles.

This swinging mechanism is designed to greatly reduce the stiffness of the new suspension system in the longitudinal direction. It is confirmed that the new suspension system has superior vibration isolation properties and running performance, and can be easily applied to a motorcycle.

9632587 Evaluation Method of Motorcycle Fatigue Strength Using Road Simulator Shokichi Harashima (Honda R&D Co., Ltd.)

In the bench durability tests of motorcycles, the mainstream technique has been to repeat riding over cams on rotating drums. As it is impossible for the technique to accurately reproduce the loads encountered during driving on a rough road, improvements in the bench durability tests are desired in both accuracy and efficiency. A study was done on the application of a road simulator for motorcycles to accelerate durability tests while retaining correlation with the loading of riding on public roads. This improved technique can be applied to all on-road motorcy- cles, thereby enhancing development efficiency.

9632596 Riding Behaviour of Inexperienced Rider - Characterist ics of Visual Information Acquisition - Masanori Motoki, Tsuyoshi Katayama (Japan Automobile Research Institute), Makoto Nakanishi, Hideo Ochiai (Honda Motor Co., Ltd.)

We carded out two experiments in order to study behavioral differ- ences between inexperienced riders and experienced riders. First, riders drove the two-wheeled vehicle fitted with a visual communication system on public road. Riding behaviour (information acquisition, positioning and signaling) was evaluated by instructors. Second, by using an eye camera, we measured sight lines of riders while driving on simulated