| 摘要 |
A controller (14) for an electro-mechanical actuation system such as a missile fin (12) actuator includes a Kalman estimator circuit (40) which generates an estimate of operating state including position and velocity of motor (16), position and velocity of a position-controlled element (PCE) (10), and motor current. The estimate is generated based on a dynamic model explicitly including the effect of structural stiffness and damping in the coupling between the motor (16) and the PCE (10), for example by treating it as a mechanical oscillator having spring and damping constants. The Kalman estimator (40) operates on a motor drive control signal and a measured position signal which may be from a Hall sensor sensing motor position. A linear quadratic regulator circuit (42) generates a control effort signal by applying a state feedback gain matrix to a state vector. The state feedback gain matrix minimizes a quadratic cost function representing variance of the control effort signal and/or the measured position signal. |
