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Ensure data measurement integrity throughout the entire vehicle durability testing process with accurate, robust and easy-to-use SWIFT Evo wheel force transducers. Ideal for spinning and non-spinning applications, they are used on the proving ground for Road Load Data Acquisition (RLDA), and in the test lab to iterate and play out RPC drive files on spindle-coupled road simulators. SWIFT Evo transducers employ a high-stiffness, one-piece design and a unique multi-axial calibration process to deliver unmatched measurement accuracy and long life.
Unparalleled measurement accuracy and integrity achieved with high-stiffness, one-piece design and multi-axial calibration
Fatigue-rated, machined from a forged billet of certified AMS high-strength, high-toughness aluminum or titanium
Intuitive Evo TI user interface and TEDS capabilities streamline and simplify set up, orientation and operation
Low end-to-end latency of 250 µsec enables tight synchronization with other transducers, sensors and active vehicle systems
Motorcycles & All-Terrain Vehicles (ATVs)
Small & High-Performance Passenger Cars
Medium-Large Passenger Cars & Minivans
Light Trucks & Sport Utility Vehicles (SUVs)
SWIFT Evo transducers achieve unparalleled measurement accuracy and long life by employing a high-stiffness, one-piece design machined from a forged billet of certified AMS high strength, high toughness aluminum or titanium alloy.
Unique among wheel force transducers, this proven design yields high sensitivity, excellent linear behavior, and high overload capacity. The transducers’ high natural frequency provides phase integrity between measured channels across the operating frequency range.
With no bolted joints, the one-piece design eliminates micro-slippage - the largest contributor to hysteresis - and facilitates efficient heat transfer across the sensor, minimizing temperature differentials in gaged areas.
The one-piece design also minimizes the number of required gages, which enhances transducer reliability and robustness.
A patented MTS flexure isolated shear beam decouples the transducer’s six components of measurement to reduce cross-coupling between measured axes. This increases transducer sensitivity to minute forces and moments and minimizes thermal response.
The one-piece outer ring and shear beam combine to make the SWIFT Evo insensitive to variations in stiffness among wheel rims and road simulator fixtures, facilitating easier integration with both.
SWIFT Evo transducers are testedto SAE J267 and J328 requirements, assuring a long life when properly maintained. Sealed to IP67 standards, they are virtually weather and contaminant proof.
SWIFT Evo transducers are fatigue rated, so the same unit can be deployed on a vehicle at the proving ground for RLDA and then in the lab for both drive file iteration and actual durability testing if desired.
Download the CAD files (.step) below to explore how the robust, one-piece transducer design manifests across the SWIFT Evo portfolio – aluminum (a) and titanium (t).
The measurement accuracy of SWIFT Evo transducers is ensured through a multi-axial calibration process provided exclusively by MTS Metrology & Calibration.
While most wheel force transducers are calibrated one channel at a time, SWIFT Evo units are subject to a meticulous, automated process that calibrates the entire transducer, cycling through each channel while exciting all others. This approach enables precise measurements of cross-coupling coefficients under far more realistic loading conditions.
The calibrated SWIFT Evo wheel force transducer is capable of yielding data that can be shared across units with very high fidelity. This affords the flexibility to dedicate specific units for RLDA, drive file generation or durability testing, while maintaining data integrity across the process.
*3000 rpm for tests lasting less than 30 minutes and 200 mph cooling air
| 10Al | 10Ti | 20Al | 20Ti | 30Al | 30Ti | 40Al | 40Ti | ||
Nonlinearity | Force | %FS | 0.4 (0.2) | 0.4 (0.2) | 0.3 (0.15) | 0.3 (0.15) | 0.2 (0.15) | 0.2 (0.15) | 0.3 (0.15) | 0.3 (0.15) |
Moment | %FS | 0.7 (0.2) | 0.7 (0.2) | 0.5 (0.2) | 0.5 (0.2) | 0.3 (0.2) | 0.3 (0.2) | 0.5 (0.2) | 0.5 (0.2) | |
Hysteresis | Force | %FS | (0.2) 0.2 | (0.2) 0.2 | (0.1) 0.2 | (0.1) 0.2 | (0.1) 0.2 | (0.1) 0.2 | (0.1) 0.2 | (0.1) 0.2 |
Moment | %FS | (0.2) 0.5 | (0.2) 0.5 | (0.2) 0.3 | (0.2) 0.3 | (0.2) 0.3 | (0.2) 0.3 | (0.2) 0.3 | (0.2) 0.5 | |
Crosstalk | Fy → Fx, Fz | %FS | 0.6 (0.2) | 0.6 (0.2) | 0.4 (0.25) | 0.4 (0.25) | 0.25 (0.2) | 0.25 (0.2) | 0.2 (0.2) | 0.2 (0.2) |
Fx ←→ Fz | %FS | 0.6 (0.2) | 0.6 (0.2) | 0.5 (0.25) | 0.5 (0.25) | 0.3 (0.2) | 0.3 (0.2) | 0.3 (0.2) | 0.3 (0.2) | |
Fx, Fz → Fy | %FS | 0.5 (0.2) | 0.5 (0.2) | 0.5 (0.3) | 0.5 (0.3) | 0.4 (0.2) | 0.4 (0.2) | 0.25 (0.2) | 0.25 (0.2) | |
** “Typical Performance” listed is better than or equal to the median historical performance level
Assembly Information | 10Al | 10Ti | 20Al | 20Ti | 30Al | 30Ti | 40Al | 40Ti | |
Transducer | kg | 1.2 | 1.9 | 3.1 | 4.8 | 4.3 | 6.3 | 8.5 | 12.4 |
lb | 2.7 | 4.2 | 6.8 | 10.6 | 9.4 | 13.9 | 18.8 | 27.3 | |
Min Rim Size | mm | 177.8 | 177.8 | 304.8 | 304.8 | 330.2 | 330.2 | 381 | 381 |
in | 7 | 7 | 12 | 12 | 13 | 13 | 15 | 15 | |
TypicalLugNutBoltCircle | mm | All | Up to 120 | Up to 120 | Up to 170 | ||||
Type Connector Output |
| BNC | BNC | BNC | BNC | ||||
Auto Shunt Calibration |
| on vehicle or test rig | on vehicle or test rig | on vehicle or test rig | on vehicle or test rig | ||||
Modal Properties: Frequency | 10Al | 10Ti | 20Al | 20Ti | 30Al | 30Ti | 40Al | 40Ti | ||
With Tire & Rim | Mx, My | Hz | na | na | 325 | na | 385 | 425 | 470 | 480 |
Fy | Hz | na | na | 610 | na | 675 | 765 | 740 | 770 | |
Without Tire & Rim | My Mx, | Hz | na | na | 980 | na | 845 | 810 | 810 | 775 |
Fy | Hz | na | na | 1,575 | na | 1,255 | 1,445 | 1,490 | 1,570 | |
Notes:
SWIFT Evo wheel force transducers achieve unparalleled measurement accuracy and long life by employing a high-stiffness, one-piece design machined from a forged billet of certified AMS high strength, high toughness aluminum or titanium alloy.
Download the CAD files (.step) below to explore how the robust, one-piece transducer design manifests across the SWIFT Evo portfolio – aluminum (a) and titanium (t).
