| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a speed controller which can conduct acceleration/deceleration of an infinite pattern with two-contact input, input a frequency command whether the input is in analog or in digital, change the frequency command during operation, furthermore correspond to re-driving and output an acceleration command in one shot, and also provide a speed adjusting method. <P>SOLUTION: The speed controller comprises a bias adjusting means 4 for increasing, decreasing, and holding frequency bias by the combination of turning on and off a bias acceleration command and a bias deceleration command, a storing means 5 for storing the frequency bias value held at the point of time when the hold time passes to be reset at a time of re-operating, an acceleration/deceleration means 2 for adjusting the acceleration/deceleration rate to a final frequency command added with the frequency command and the frequency bias to output an output frequency, and a switching means 6 using the final frequency command as the output frequency fout, not through the acceleration/deceleration adjusting means 2 when the frequency bias is not held. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
