| 摘要 |
PCT No. PCT/SE89/00576 Sec. 371 Date Apr. 19, 1991 Sec. 102(e) Date Apr. 19, 1991 PCT Filed Oct. 19, 1989 PCT Pub. No. WO90/04670 PCT Pub. Date May 3, 1990.A functional control device (1), designed to be used in primarily textile machines (20), in which the speed must be varied in a simple fashion. Its function involves a conversion of a pressure of a gaseous or liquid medium to a code, which is adapted to the machine. When speed control means, having plates (2, 3), designed to be depressed, e.g. in a sewing machines (20), are used, one of the pedals corresponds to a forward depressing movement and the other a backward depressing movement. When a nozzle (4) is used, said functions can also be provided. The so-called forward depressing movement comprises a presser foot downwards and 12 speed steps, from zero to a maximum rotational speed, which can be as high as 400-9,000 rev./min. A backward depressing movement comprises a presser foot as well as a cutting/locking function. The function of the pressure error interface can be varied in a simple way, for various types of machine control means, and for varying pressure sensitivities. The output signals can be changed in a simple manner. |
