| 摘要 |
<p>A position servo system for positioning a member (58) mounted on a spring (57). The spring (57) provides a force opposing the motion of the member (58) from an initial position. A position actuator, for example a motor (28), applies a force in response to a position request signal (11) for moving the member (58) to a desired position. A portion of the position feedback signal (13) is applied from a position sensor (48) to the motor (28) as a positive feedback signal (51) to compensate for the force of the spring. A steady state position error (E) of the servo system is thereby substantially reduced to zero. A circuit (65) and method for calibrating the positive feedback signal (51) are also described.</p> |
