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PFS Plate Force Sensor0 pages
Plate Force Measurement System
Plate Force Gauge
Sensors and gauges measure the reactive force from the road surface in 6 dimensions at high speed and high accuracy.
Measures force generated by tires as road surface reaction force directly and at high accuracy, which is not possible
with the Wheel Force System (WFS).
Application 1 of PFS
Measurement of Road Surface Reaction Force for a Real Vehicle
Traveling locus
6-Component Force Measurement
Calculation of Tire Force Point P (Traveling Locus)
M=P×F
... Cross product
P=M/F
... Traveling locus
Pz = 0 (=Const.)
Z
Tire
... Scrub radius
Tire force point
6-component force
Rotation center
Tangential and lateral force
Traveling locus
Torque steer
0
0
1
2
3
Moment Data
Mx
My
Mz
500
0
400
200
0
−200
−400
−600
− 500
0
1
2
Time [s]
0
1
Time [s]
2
Application 2 of PFS
300
Tangential force
Lateral force
3
1st Data
2nd Data
Plate
20
200
Moment (Torque) (Nm)
3
1×103
Force Data
600
Y-direction (lateral direction)(mm)
Tangential force
Lateral force
Radial force
4×103
Tangential and lateral force (N)
Force (N)
Traveling locus and torque steer analysis results
for front wheel vehicle in creep mode
Force Data
6×103
Moment (Nm)
Camber
Toe-in
Scrub radius
Torque steer
Scrub radius
Front wheel vehicle in creep mode
6-component force measurement data
−1×10 3
Alignment variation
Virtual king pin
(swivel axis)
Influence of Alignment
2×10
X
Origin point
... Torque steer
RS = MS / | F |
P
Y
Scrub Radius (Torque Steer) Analysis
MS = Mz - P × F
Tire force point
0
100
0
−100
10
0
− 10
−200
−300
−300
1st MzT Torque Steer
2nd MzT Torque Steer
−200
−100
0
100
200
300
− 20
− 0.3
− 0.2
X-direction (traveling direction)(mm)
3
Measurement of Reactive Force in Simulated Driving Wind
Air resistance / Lifting power / Lateral force / Pitch / Roll / Yaw
Center of wind force
Model Based E n g i n e e r r i n g
− 0.1
0
0.1
X position (m)
0.2
0.3
"
