Sensorless motor control for electro-mechanical flight control actuators

Abstract Electro-mechanical flight control actuators have become a viable option as replacement for conventional hydraulic in future more electric aircraft. A rotor angle measurement is generally required field-oriented of the electrical machine and usually obtained from safety-critical resolver. It contributes, however, to rising local hardware complexity with negative impact on space allocation, weight, motor inertia, reliability, cost. This paper investigates sensorless strategies that might substitute resolver an accurate estimate value. hybrid observer implemented allows position without sensor at all speeds. In high speed domain, extended electromotive force permanent magnet synchronous used estimation. low including standstill, anisotropy properties are exploited by applying alternating injection method. The performance algorithm evaluated aileron actuator test rig large civil