The torque measuring wheels of the RoaDyn P1xy series yield important information from simulation, test stand measurement and over-the-road testing.
Minute changes in torque are investigated in the road tests. Due to the very high dynamic range of the piezoelectric sensors, an appropriately chosen charge amplifier range allows extremely accurate operation of the RoaDyn P106 Type 9294B… up to three factors of ten below the mechanical limit of its measuring range. Its sensors with piezoelectric crystals have the following features: Freedom from aging and fatigue, excellent stability, with no sensitivity drift, high linearity combined with very wide dynamic range, high spring constant for high measuring element natural frequency, inherently low crosstalk and low hysteresis, compact construction.
Braking tests involving very high torques through to coast down tests with extremely small torques may be performed with this measuring wheel. Moreover, the rotation angle information of the PremiumLine slip ring transmission module can be used to largely eliminate rotation-dependent effects of the tire, drive train and other disturbance variables.
As a result the high responsivity, impressive accuracy and good reproducibility of the RoaDyn P1xy can be fully exploited even during over-the-road testing.
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