6 Axis Wheel Force Transducer - 445 kN - Class 8 trucks and tractors
- 3 moment and 3 force measurements in real driving conditions
- Force capacities: Fx, Fz: 445 kN, Fy (lateral): 222 kN
- Moment capacity: 108 kNm
- Measures X & Z accelerations
- Signal output : Analog, CAN, optional EtherCAT, Ethernet/IP and CANFD
- Monitors combined loads of one or two tires
- Adapts to 20 inch and larger wheels
- Environmentally protected
- Temperature compensated
- Rugged stainless steel construction
- Tested to SAE J328 fatigue strength standard
- Swappable slip ring or telemetry system for signal transmission
- ISO-17025 calibration certificate included
- rental option available
Presentation
The LW-2T-100K-S Wheel Force Transducers (WFT) is used to measure forces (up to 445 kN) and moments (up to 108 kNm) up to on class 8 trucks and large off-road vehicles. It provides independent output signals for vertical, lateral, and longitudinal forces as well as camber, steer and torque moments. Being completely weatherproof, it's are ideal for on-road and off-road measurements in all conditions.
Specifications
Maximum Force Capacity, [Fx, Fz] (radial) | 445 kN |
---|---|
[Fy] (lateral) at Tire Patch | 225 kN |
Maximum Torque Capacity [Mx, My, Mz] | 108 kNm |
Accelerometer range | +/- 55g |
Sensor | 4 arm strain gage bridges |
Nonlinearity | ≤ 1% of full scale output |
Hysteresis | < 0.5% of full scale output |
Cross Axis Sensitivity after correction | < 1% of full scale output |
Temperature Range, Operating | -40°C to 125°C |
Angular Resolution | 0.17° |
Weight | 26 kg |
Installation, Signal processing and data transmission
The transducer ** LW-2T-100K-S** outputs :
- 3 forces
- 3 moments
- 2 accelerations X and Z
- wheel speed and position
Both analog and CAN output are offered. The raw signals are amplified in the amplifier mounted on the transducer, then sent to the conditionning module CT2 through the slip ring assembly.
Transducer + amplifier and slip ring | Conditionning module CT2 |
---|---|
CT2 Transducer Interface Box:
- Performs real-time coordinate transformation and crosstalk compensation
- Easy to use Zero, Shunt Calibration, and Bridge Power Off functions
- Simultaneous Analog, CAN, & Ethernet signal outputs
- Embedded web page enables user to change set-up options, move WFT measurement origin, view transducer static values, create .dbc file
Amplifier and Slip Ring Package:
- Internal X & Z accelerometers
- High resolution encoder for position & speed measurement
- Internal smart chip contains all calibration, zero, & shunt values
- Provides signal conditioning & amplification to the transducer strain gage signals
- Digitizes Transducer, Encoder, & Accelerometer signals
- Supports slip ring
Installation on Vehicle / Spinning application
The matching Amplifier / Slip Ring package easily mounts onto the transducer. It amplifies and digitizes the transducer signals before they pass through the slip ring. The installation on the wheel is completed through a dedicated wheel rim (single or twin) and hub.
Single rim wheel | Twin rim wheel double |
---|---|
Installation on Test Rig / non-spinning application
The wheel force transducer supports installation through flanges or hubs. An amplifier mounts directly on the transducer, and the cross-talk compensation is completed into an embedded electronics. Output signals are analog or CAN. Other interfaces available on demand.
the system configuration and setup is completely done within a simple webbrowser on a PC or laptop connected to the CT2 over LAN. no additional Software is needed.
Applications
- Driving behaviour assessment (comfort, grip)
- braking tests
- pothole testing
- lane change testing
- vehicle dynamics
- durability testing
- 6axis spinning measurements on test rig
- tire testing
- Application
- Heavy-duty - Tractor
- Number of Axis
- 6 Axis
- Force Capacity [Fx, Fz]
- 445000 N
- Force Capacity [Fy]
- 225000 N
- Moment capacity
- 108000 Nm
- Nonlinearity (% FS)
- ± 1 %
- Hysteresis
- 0.5 % FS
- Analog output signal
- 0-10 VDC
- Tension d'alimentation
- 10 Vcc
- Hub Size (Pitch Circle Diameter): ≤ 13”
- Rim Size: ≥ 20”
- Special Units for high temperature applications
- Custom designs with alternative output sensitivities / load capacities
- Weatherproof Slip Ring
- Encoder / Amplifier (with or without display)