Design and Implementation of FFPIV Scheme for Closed Loop Motion Controller

Abstract

To satisfy the requirements of motion control for industrial machine, a multi-axis motion controller based on DSP is developed in this paper. The motion controller consists of DSP which plays a main role in this design; DPRAM to make sure the rapid and reliable communication with host; FPGA to handle the task of address decoder and receiving feed-back encoder signal; and several peripheral logic circuits. In the part of hardware design, overall structure of motion control system is presented. Then, the Feed-Forward Proportional-Integral-Velocity (FFPIV) scheme which introduces KV in term of velocity loop to achieve the accurate, smooth and real-time response is proposed in the software developing part. The experiment data are carried out to indicate that this motion controller has advantages of superior performance and highly machining precision.

Enhancing the Capability of a Ground-Based Optical Telescope for Thai National Space objects Observation †

“…In the continuous tracking mode, most single space target observed from the time of observation initiation tend to appear in the central image FoV scanned region. To evaluate a close-loop tracking architecture [4], a recognizing of space objects with known orbital parameters is prioritized. Initially, the telescope guidance system calculates the approximate candidate space target both position and velocity, while the two perpendicular axes of the telescope slew to the expectation point, where the target is expected to cross the image FoV within a few moments.…”