| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To avoid the generation of instability in a feedback system. <P>SOLUTION: This system for controlling a light source uses a light generating unit for generating light signal having a certain wavelength at the intensity set by a control signal, and the control signal is controlled by a servo for monitoring the light output of the light generator to compare the monitored value with a target value. In the case of changing the target value, the control signal is initially replaced by a predicted control signal based on the new target value rather than the error signal generated by the servo, and provide time for the servo to adjust to the new target value. The control signal comprises a periodic signal to be switched between a value that causes the light generator to generate light of a certain wavelength and a second value at which the light generator does not generate the light of the wavelength. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
