| 摘要 |
<p>The present speeds of axes are determined from the residual errors, and are used for deriving the present actual speed. An output is produced that presents a ratio of the present actual speed to a predetermined maximum speed. An error register stores a residual error (residual quantity) between the detected position data and position instructions for the axes from the MPU in the CNC apparatus. A speed instruction is generated from the error register to controlthe speed. In this case, there exists a predetermined relationship between the residual error and the present speeds of the axes, and this is utilised to derive the present speeds of the axes from the residual errors. When the present speeds of the axes is obtained, the actual speed of the work table can be determined by combining the speeds of the axes.</p> |
