LW9.5 wheel force transducer
Six-axis wheel force transducer for ATVs, utility and other lightweight vehicles, 35.6 kN radial and 17.8 kN lateral, in stainless steel, with amplifier and slip ring.
- 35.6 kN
- Fx, Fz capacity
- 17.8 kN
- Fy capacity
- 5.4 kN·m
- Moment capacity
- ≤ 0.25 % FS
- Non-linearity
- OutputsFx Fy Fz · Mx My Mz
- Also measuredX and Z acceleration (X, Y, Z on the LW50) · wheel speed and angle
- Signal outputanalog · CAN · Ethernet · CAN FD and EtherCAT on the CT3
Wheel force transducer for ATVs and small vehicles, 35.6 kN
The LW9.5 measures all the wheel forces and moments on ATVs, utility and other lightweight vehicles: vertical, lateral and longitudinal forces, and camber, steer and torque moments. Its 4-arm strain gage bridges are rated 35.6 kN (8,000 lb) on Fx and Fz, 17.8 kN (4,000 lb) on Fy and 5.4 kN·m on all three moments, with non-linearity of 0.25 % of full scale or less. The stainless steel transducer is weatherproof and temperature compensated, operates from −40 to 125 °C and adapts to 10 in and larger wheels. A matching amplifier adds X and Z accelerations and digitizes the signals before the slip ring; angular resolution is 0.17°.
The hub adapter bolts to the transducer with thirty-two 1/4-20 screws and the rim adapter with twenty-four, torqued crosswise to 13 N·m; four more hold the amplifier, sealed by O-rings and matched to its transducer. The slip ring, with a 512-pulse encoder, stays on the amplifier; a magnetic restraint and rod hold its stator on non-steered wheels, a stator angle corrector on steered ones. The CT2 box, powered at 9 to 36 V DC, zeroes the transducer on a hoist or on the road, runs the shunt calibration and gives the loads in vehicle coordinates.
The Michigan Tech Blizzard Baja team fitted an LW9.5 to its off-road car on custom adapters. On a utility vehicle, it records the force falling to zero in flight and peaking at landing after a ramp.
Specifications
| Measured quantities | Fx · Fy · Fz · Mx · My · Mz |
|---|---|
| Force capacity | Fx 35.6 · Fy 17.8 · Fz 35.6 kN |
| Moment capacity | Mx 5 400 · My 5 400 · Mz 5 400 N·m |
| Non-linearity | ≤ 0.25 % FS |
| Hysteresis | ≤ 0.5 % FS |
| Crosstalk | ≤ 1 % FS (after correction) |
| Angle resolution | 0.17° |
| Axes | 6 |
| Sensing principle | Strain gage (4-arm bridges) |
| Accelerometer range | 55 g (X and Z) |
| Output | Analog voltage · CAN · Ethernet |
| Signal transmission | Slip ring |
| Material | Stainless steel |
| Operating temperature | −40 to 125 °C |
| Interface box | CT2 |
| Vehicles | ATVs · Utility vehicles · Lightweight vehicles |
| Rim size | 10 in (and larger) |
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Unusual bolt pattern, motorsport hub, agricultural wheel: we build it around your wheel.
Resources
Datasheets and manuals
Drawings
None for LW9.5.
Guides and notes
Related applications
-
Durability Wheel loads on the road Three forces and three moments at each wheel, recorded while the vehicle is driven. -
Dynamics Vehicle dynamics The forces and moments at each wheel while the vehicle brakes, turns and changes lane. -
Dynamics Side slip angle Side slip angle read without contact by an optical sensor, on a wheel or on the vehicle body. -
Test rig Road simulators The loads measured at the wheel on the road, and the proof that the simulator reproduces them.
If a six-axis wheel is not what you need
- Torque only TW series wheel torque transducers
Drive and brake torque My at the wheel, 237 N·m to 81 kN·m.
- Signals from the series wheel Wheel instrumentation system
Strain gages, thermocouples and wheel speed, on the wheel the vehicle already has.
- Force on a part, not a wheel TR3D-B three-axis load cells
Three orthogonal forces from 1.1 to 71 kN per axis.
A question on this product?
Vehicle, wheel size, expected loads. An application engineer answers.
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