Abstract: An active temperature differential compensation for strain gage based sensors. An array of temperature sensors can be placed at the gage locations to measure the difference in temperature that induces strain on the strain gages. The output of the temperature sensor network can be placed in series with the strain gage network to directly compensate the induced voltage caused by the temperature gradient and/or employed as the input of a mathematical algorithm that can compensate the output from the strain gage bridge to dynamically correct unwanted thermally induced strain in the strain gages.

Abstract: A load pin brake cell apparatus includes a load pin element that can be machined with a pair of external grooves in order to create independent load locations. A sleeve can be installed over the load pin element and can be welded at each edge of the grooves to relocate the pair of grooves to interior of the load pin element. The sleeve and the load pin act as one homogenous component to ensure a predictable and total transfer of stress and strain to a strain gauge located within the load pin. The ratio of a cross-sectional area between the sleeve and the load pin can be kept to a minimum in order to minimize the non-linearity due to bending stresses. The sleeve wall preferably possesses a sufficient thickness to prevent yielding at the grooves.

Abstract: A load pin brake cell apparatus includes a load pin element that can be machined with a pair of external grooves in order to create independent load locations. A sleeve can be installed over the load pin element and can be welded at each edge of the grooves to relocate the pair of grooves to interior of the load pin element. The sleeve and the load pin act as one homogenous component to ensure a predictable and total transfer of stress and strain to a strain gauge located within the load pin. The ratio of a cross-sectional area between the sleeve and the load pin can be kept to a minimum in order to minimize the non-linearity due to bending stresses. The sleeve wall preferably possesses a sufficient thickness to prevent yielding at the grooves.

Abstract: An active temperature differential compensation for strain gage based sensors. An array of temperature sensors can be placed at the gage locations to measure the difference in temperature that induces strain on the strain gages. The output of the temperature sensor network can be placed in series with the strain gage network to directly compensate the induced voltage caused by the temperature gradient and/or employed as the input of a mathematical algorithm that can compensate the output from the strain gage bridge to dynamically correct unwanted thermally induced strain in the strain gages.