| 摘要 |
<p>PURPOSE:To return the title table to a reference position by a simple mechanism and control without necessitating a sensor, etc., by measuring the operation time of the table and displacing it in the reverse direction by its time at the time of return. CONSTITUTION:At the time of body position generating operation, the time when a driving signal is applied, namely, the operation time is measured by a time 12 which has been constituted of, for instance, a counter. In this case, addition and subtraction are executed at the time of forward turn and at the time of reverse turn, respectively in accordance with the rotational direction. As a matter of course, before the operation is executed, the timer 12 is reset by a timer control part 51. When the operation is ended, a timer value (count value) is contained in a timer value storage part 52. In such a state, in case a surgical operation, etc. are ended and a horizontal return command is operated by an operating box, its return command signal is inputted to an arithmetic part 53 of a control circuit 50. The arithmetic part 53 outputs a control signal to a relay control part 54 by the contents of the storage part 52, operates the first relay 14 and the second relay 15 and controls switches 22a, 23a.</p> |
