LW700 wheel force transducer LW series

LW700: wheel force transducer, 700 kN

The LW700 measures all the wheel forces and moments: vertical, lateral and longitudinal forces up to 700 kN each (Fx, Fy, Fz), and camber, steer and torque moments of 275 kN·m each. The maximum recommended static load is 23,800 kg. Non-linearity and hysteresis are 0.5 % of full scale or less, and cross-axis sensitivity after correction 0.2 %. Of robust IP67 design, the transducer weighs 64.5 kg and fits standard hubs with a 425 mm pitch circle diameter. Its ± 100 g accelerometers give X and Z accelerations, and an encoder gives wheel position and speed.

In spinning use, the signals leave through an outboard slip ring, with the amplifier package mounted onto the transducer, or through inboard telemetry, whose stator, mounted close to the rotating telemetry ring, holds the receiver, the encoder pick-ups and the induction coil; the CT3 box then also supplies the induction power. The CT3 performs coordinate transformation and crosstalk, offset and polarity correction, with zero, shunt calibration check and zero angle functions; its embedded web page, reached over USB, sets up the system and moves the measurement origin.

Its robust IP67 design suits the harshest track and off-road measurements; in non-spinning applications, the LW700 is used to monitor and control laboratory test rigs.