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This study suggests a position estimator using linear hall effect sensors and iterative algorithm. Compared to other typical position sensors such as encoders and resolvers, hall effect sensors have several advantages. (e.g., insensitivity to both external disturbances and environmental contaminations, and having a scaleless property). Furthermore, linear hall sensors provide more detailed information...
In this paper, a rotor position estimation based on a low-resolution position sensor is proposed. As vector control of an ac permanent-magnet synchronous machine requires the rotor position with sufficiently high resolution, the low-resolution sensor signal is transformed into a spatially quantized rotating vector and based on this vector, a vector-tracking observer calculates the corresponding high-resolution...
In this paper a sensorless control method for position control of a radial active magnetic bearing is investigated. This novel bearing concept consists of a three phase design utilized by a three phase voltage source inverter. Additionally the stator coils themselves are used for position sensing by electrical current and voltage signals. Especially statistic properties of position estimation during...
This work proposes a position and attitude nonlinear observer based on inertial measurements and GPS pseudorange readings. The observation problem is formulated on SE(3), and the solution yields exponential convergence of the attitude and position estimates. The GPS pseudorange measurements and inertial sensor readings are exploited directly in the observer, and the integration of vector readings...
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