| 摘要 |
<p>PURPOSE:To make it possibe to control the speed of a self-operating track, by simply accelerating or decelerating manually by means of storing the present speed signal of the track when it conforms to a certain relation with the previously stored speed signal. CONSTITUTION:When a main switch SW1 is closed, a predetermined speed A is stored in a memory 8, and the cart runs at said speed. A memory 4 memorizes a speed signal of the track given by a counter 3 and at the same time transmits the speed signal memorized previous time to a comparator 6 every time a clock pulse CL1 is given. The comparator 6 stores the present speed signal in the memory 8 when said signal is larger than the signal transmitted by the memory 4. Thus, the track runs at the speed stored in the memory 8. When a decelerating switch SW2 is closed, the initial speed A is stored in the memory 8.</p> |
