Angular acceleration transducer
AssigneeAsea Brown Boveri AG
InventorJarl Sobel
Life of this patent
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Abstract
An angular acceleration transducer measures angular acceleration of a torque-transmitting shaft of a drive device, and includes a measuring shaft having a torque transducer and a transducer flywheel, and which is connected to the torque-transmitting shaft in such a way that it follows rotational movement of the torque-transmitting shaft with a known ratio.
Claims5
An angular acceleration transducer for measuring the angular acceleration of a torque-transmitting shaft (2) of a drive device (1), characterized in that the angular acceleration transducer comprises a measuring shaft (6) continuously connected to the torque-transmitting shaft in such a way that it follows the rotational movement of the torque-transmitting shaft with a known ratio “n” between the rotational speed of the measuring shaft and the torque-transmitting shaft and that the measuring shaft is provided with a torque transducer (7) and a transducer flywheel (9), whereby the angular acceleration of the torque-transmitting shaft will be
- dωs/dt=Mg/(Tg×n)
- wherein
- Mg=torque measured in the measuring shaft
- Tg=the moment of inertia of the flywheel of the angular acceleration transducer
- ωs=the angular velocity of the flywheel/drive shaft
- n=the ratio between the rotational speed of the measuring shaft and the torque-transmitting shaft.
Dependencies are inferred from the claim text.