Ka Group Ag

Kongsberg Inc.

Nikolai Panine

Circuits and methods relating to shunt current sensing are provided. A shunt current sensing circuit comprises a shunt resistor for receiving a shunt current. A filtering stage is connected to the shunt resistor and is configured to filter the shunt current. A current sense amplifier is connected to the filtering stage and is configured to receive the filtered shunt current from the filtering stage. The current sense amplifier is configured to sense the filtered shunt current to produce an output voltage. The filtering stage is configured to filter the shunt current such that the output voltage produced by the current sense amplifier (U) is substantially proportional to the shunt current.

Circuit and method for shunt current sensing

A torque sensor assembly comprises a shaft configured to receive an applied torque. The shaft comprises at least one region, which is magneto-elastic and configured to generate a magnetic field in response to the applied torque. A pair of sensing coils disposed adjacent to the region is configured to sense the magnetic field. One or more sensors sense a temperature of each of the sensing coils. A controller is coupled to the pair of sensing coils and the sensor(s). The controller is configured to receive the sensed temperature of each of the sensing coils, determine a temperature difference between the sensing coils and generate an output signal based on the sensed magnetic field. The output signal accounts for the temperature difference between the sensing coils.

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Nikolai Panine