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Sökning: onr:"swepub:oai:DiVA.org:vti-4507" > Manoeuvrability cha...

Manoeuvrability characteristics of cars operated by joysticks : a manoeuvring test

Östlund, Joakim (författare)
Statens väg- och transportforskningsinstitut
Peters, Björn (författare)
Statens väg- och transportforskningsinstitut
 (creator_code:org_t)
Linköping : Statens väg- och transportforskningsinstitut, 1999
Engelska 50 s.
Serie: VTI meddelande, 0347-6049 ; 860A
  • Rapport (övrigt vetenskapligt/konstnärligt)
Abstract Ämnesord
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  • The aim of the report was to identify shortages and potential risks of vehicles operated by joysticks designed for drivers with severe disabilities, especially concerning the human-machine interaction.A small group of drivers with severe disabilities are able to drive a car provided it is fitted with a joystick for acceleration, braking and steering. Owing to the design of the joystick, which consists of an angle-operated lever fastened at one point, and the lack of natural feedback from the brake system and front (steering) wheels, the task of driving can be unnecessarily difficult and arduous. Above all, three risks can be identified: (1) The lack of feedback from steering causes the driver to make faster movements of the joystick than the servounit can manage, thus causing time delays in the steering system. (2) Since the joystick is angle-operated and the transfer function of the brake is not always optimal, it may be difficult to handle the brake in a controlled and comfortable way. (3) The most obvious risk is that the accelerator/brake control and the steering control may influence each other (interference), mainly since it is not possible to provide tactile separation of the control directions of the joystick.A manoeuvring test was carried out by five joystick drivers and a control group at Mantorp Park in the county of Östergötland. The possibilities of carrying out fast lateral manoeuvres and fixed controlled decelerations with the joystick were evaluated. Furthermore, a possible interference phenomenon was studied among joystick drivers. The results partly verified the identified risks, even so it was not possible to link the results to traffic safety consequences in an adequate way. Consequently, it is not known whether cars equipped with joysticks for severly disabled drivers create a risk from the traffic safety point of view.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Farkostteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Vehicle Engineering (hsv//eng)

Nyckelord

English
Sweden
Steering
Equipment
Disabled person
Test
Braking
Acceleration
Servo
Transfer
Deceleration
91 Road: Vehicle design and construction
91 Road: Vehicle design and construction

Publikations- och innehållstyp

vet (ämneskategori)
rap (ämneskategori)

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Av författaren/redakt...
Östlund, Joakim
Peters, Björn
Om ämnet
TEKNIK OCH TEKNOLOGIER
TEKNIK OCH TEKNO ...
och Maskinteknik
och Farkostteknik
Delar i serien
VTI meddelande,
Av lärosätet
VTI - Statens väg- och transportforskningsinstitut

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