Sensor signal estimator and motor controller for stabilization of tracking antenna

An apparatus for controlling a posture of a satellite tracking antenna using an apparatus for estimating a control signal to stabilize a posture of a satellite tracking antenna, comprising:

• an angular velocity estimating means for estimating an angular velocity signal by removing an error signal generated by temperature drift of an input angular velocity sensor signal through a first low frequency band filtering operation;
• an inclination angle estimating means for estimating an inclination angle signal by receiving an inclination angle sensor signal, extracting low frequency component of inclination angle signal through performing a second low frequency band filtering operation on the received inclination angle sensor signal, obtaining an inclination angle integrating signal through integrating the estimated angular velocity signal, extracting high frequency component of inclination angle signal through performing a high frequency band filtering operation on the inclination angle integrating signal, and adding the extracted low frequency component and high frequency component of inclination angle signal;
• a motor controlling means for generating an inclination angle control signal by extracting an inclination angle error signal through subtracting the inclination angle signal estimated at the inclination angle estimating means from an inclination angle target value, generating an angular velocity control signal by extracting an angular velocity error signal through subtracting the angular velocity signal estimated at the angular velocity estimating means from an angular velocity target value, and generating a motor control signal by adding the inclination angle control signal and the angular velocity control signal;
• and
• a driving motor for controlling a posture of a satellite tracking antenna using the generated motor control signal.