| 摘要 |
A high-resolution shaft encoder and a related encoding method for accurately measuring angular position and velocity of rotating shafts. The high-resolution shaft encoder includes an annular-shaped actuator ring that rotates at high speed, a shaft centered within the actuator ring, and an encoder housing. The shaft encoder generates measurements of shaft position theta p and velocity omega p, with respect to the encoder housing, from measurements of three time intervals tp, tr and DELTA t. These time interval measurements are computed from the output of a sensor element positioned on the shaft and a sensor element positioned on the encoder housing, both of which respond to an input actuation element positioned on the rotating actuator ring.
|
