| 摘要 |
1,166,512. Programmed electric control; time control of electric circuits. TORRINGTON MFG. CO. Dec. 6, 1966 [Dec. 29, 1965], No. 54471/66. Headings G2N and G3T. A system for simulating a programme such as would be set by one or more cams comprises digital control information storage means, which may be a disc or cylinder having perforations admitting light to photo-cells, 180-191 driven by a variable speed motor 101-102 the output from the means selecting through bi-stable circuits 222-231 and gates 151-160 one of a plurality of continuously produced frequencies derived in a similar disc and photo-cell arrangement 121-140 also driven from motor 101, which are applied through a shaper 162, retro-actively controlled amplifier 164, and direction switching circuit connected to photo-cells 180,181 to a motor 170 which may be an electro-hydraulic stepping motor. A plurality of systems may be employed for co-ordinate movement. The digital control information storage means may be alternatively of a magnetic type. |
