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T o w h o m c o rr e s p o n d e n c e s h o u ld b e a d d re s s e d . s o o k im @ c n u .a c .k r
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Development of A Haptic Steering System for a Low Cost Vehicle Simulator using Proving Ground Test Data
Sung-Soo Kim
*1)Sang-Yoon Jeong
2)Chang-Ho Lee
3)1,3)
Department of Mechatronics Engineering, Chungnam National University, Daejeon 305-764, Korea
2)
Korea Delphi Automotive Systems Corporation, 395-70 Sindaebang-dong, Dongjak-gu, Seoul 156-010, Korea (Received 28 June 2004 / Accepted 22 December 2004)
A b s trac t : A h a p tic s te e rin g s y s te m w h ic h re fle c ts s te e rin g re a c tio n to rq u e h a s b e e n d e v e lo p e d fo r a fix e d b a s e v e h ic le s im u la to r. T h e h a p tic s te e rin g s y s te m c o n s is ts o f a s te e rin g e ffo rt s e n s o r, M R -c lu tc h , A C s e rv o m o to r a n d c o n tro lle r. In o rd e r to g e n e ra te re a lis tic s te e rin g to rq u e fe e l to d riv e r a n d a t th e s a m e tim e to m e e t re a l-tim e s im u la tio n re q u ire m e n t, 3 D to rq u e m a p is c o n s tru c te d b y e x p e rim e n ta l d a ta a n d to rq u e g e n e ra tio n a lg o rith m u s in g th e to rq u e m a p h a s b e e n a ls o d e v e lo p e d . 3 D to rq u e m a p is c o n s tru c te d u s in g c u rv e fittin g a n d in te rp o la tio n o f th e m e a s u re d v a lu e s o f th e s te e rin g a n g le , v e lo c ity a n d s te e rin g to rq u e fro m a c tu a l s la lo m te s t o n th e p ro v in g g ro u n d . In o rd e r to c a rry o u t p e rfo rm a n c e te s t o f th e d e v e lo p e d h a p tic s te e rin g s y s te m , a fix e d b a s e d v e h ic le s im u la to r is c o n s tru c te d b y in te g ra tin g re a l tim e v e h ic le d y n a m ic s m o d u le , V R -v id e o /a u d io m o d u le , a n d th e h a p tic s te e rin g s y s te m . S te e rin g to rq u e a n d s te e rin g a n g le c u rv e s h a v e b e e n o b ta in e d fro m v irtu a l te s tin g in th e v e h ic le s im u la to r a n d p e rfo rm a n c e o f th e h a p tic s te e rin g s y s te m h a s b e e n e v a lu a te d .
K e y w o rd s : V e h ic le s im u la to r( ), H a p tic s te e rin g s y s te m ( ), R e a l-tim e s im u la tio n
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Fig. 1 Haptic steering system
Table 1 Specifications for components of Haptic steering system
T y p e S p e c
A C s e rv o m o to r
Y a s a k a w a C o .
S M M P -0 2 A 3 1 2 S G D A -0 2 A S
(D riv e r)
:0 .6 3 7 N m :3 0 0 0 rp m
M R b ra k e L o a d C o . R o ta ry b ra k e (M R B -2 1 0 7 -3 )
M a x o n -s ta te to rq u e :5 0 in -lb M a x o p e ra tin g s p e e d
:1 0 0 0 rp m G e a r
re d u c e r
H a rm o n ic d riv e
H a rm o n ic d riv e C S R 2 5
R e d u c in g ra tio :1 0 0 /1 M a x a llo w a b le in p u t
v e lo c ity : 4 0 0 0 rp m
Fig. 2 Procedure for torque map generation
Fig. 3 Conceptual flow for haptic steering system of a low cost vehicle simulator
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Fig. 4 Slalom test results
Fig. 5 Slalom test results in 3D space
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Fig. 6 Three dimensional torque map
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Fig. 7 Torque generation algorithm
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