| 摘要 |
<p>PURPOSE:To rapidly select a jack pattern by obtaining the one-side pushing degree of a shield jack based on the ratio of a displacement quantity to an expected displacement allowable quantity, and the ratio of a deflection angle quantity to an expected deflection angle allowable quantity and collating same with a previously obtained one-side pushing degree. CONSTITUTION:Data on the displacement quantity and deflection angle quantity of a shield machine 6 are outputted from a measuring device 1 to a fuzzy control device 2. Then, the control device 2 obtains the ratio of the displacement quantity to the allowable quantity of predetermined displacement quantity while obtaining the ratio of the deflection angle quantity to the allowable quantity of a predetermined deflection quantity. Then, one-side pushing degree of a shield jack 15 is obtained based on each ratio and collated with a one-side pushing degree which is previously obtained from the arrangement of the jack 15. By selecting the optimum jack pattern, a pattern information is outputted to a jack control device 3. Further, the control device 3 opens a valve 7 corresponding to the selected jack 15 and feeds oil from a pump 5 to drive the jack 15.</p> |
