| 摘要 |
<p>PURPOSE:To enable to start a digital control system directly, by compulsively controlling an output reaching the steady-state immediately after the start of control with a pre-program system by means of a pre-selected pattern. CONSTITUTION:The objective system consists of, e.g., a digital automatic pulse phase shifter 1, thyristor converter 2, plasma shape control magnetic field coil 3, current transformer 4, plasma shape detector 5, thyristor 6, set panel 10, upper rank computer 20, and lower rank computer 30. First, the leading is made at the time point of T0, and control is started at the time T1. Control is changed over from the pre-program control to the feedback control at the time of T2. The pre-program control is made between T1 and T2. Thus, the program mode designated with another low level program is selected among the various types of pre-program patterns. Thus, after the start of digital control program directly, since the output of control variable can be made with a slight step, the leading is quickened even at the first start.</p> |
