多马达驱动机械外文翻译(编辑修改稿)

多马达驱动机械外文翻译(编辑修改稿)内容摘要：

e preceding illustrations. FIG. 5 is a similar spatial illustration of the drive according to FIG. 3 within the carrying structure 9 of escalator 1. The two stair elements 22 are likewise additionally shown. The function and operation of the multimotor drive according to the invention is to be explained more closely in the following by reference to FIG. 6. The current supply of the drive takes place as usual from local threephase current mains 13 with phases R, S and T which are led to a main switch 14. Following thereon, the entire drive is connected through a main relay or several relays 15. There then follows a frequencysetting device 16, which by way of a relay control 23 with the relays S1, S2 to Sn feeds the motors (M1, M2 to Mn) of the drive modules 7 at a variable frequency current and direction of rotation as provided by the frequencysetting device 16. The motors M1, M2 to Mn are, as already shown and described in the preceding, operatively connected with the main drive wheel 6 by way of gears and output gearwheels and intermediate gearwheels 21, which are not further illustrated here. Torque transmitters 20 (L1, L2 to Ln) for the purpose of the measurement of the actual mechanical loading of the motors M1, M2 to Mn are installed at a suitable place in the transmission between the motors M1, M2 to Mn as known in the art. The main gear wheel 6 drives a speed transmitter 19 by way of an appropriate known transmission, which similarly is not more closely illustrated. A control and regulating unit 10 contains microprocessor and relay control ponents, as well as signal and data inputs and outputs. First input data line supplies speed values from the speed transmitter 19, which are fed as actual values to an internal regulating section. The second group of input data lines provide measurement values from the torque transmitters 20 and, through appropriate processing, cause the switchingin and switchingout of individual drive modules 7. A third group of input data lines supplies data from transmitters 11, which essentially concern control safety contacts and mode of operation switches. A first group of output data lines leads to the relays 15 and to the frequencysetting device 16. A second group of output data lines contain control signals for the relay control 23, and the third group of output data lines provides the data to control optical signals and illumination 12. The multimotor drive according to the invention functions as following: During startingup of the escalator 1, the relay 15 for the drive is switched on, the frequencysetting device 16 is run up and at least one drive module 7 is switched on by way of the relay control 23 by the control and regulating unit 10 according to the choice of direction and a startup program. On reaching the target speed, the drive regulation in the control and regulating unit 10 holds the speed of travel of the escalator 1 constant within close limits independently of the load. During the now following operation of the escalator 1, the input data lines from the torque transmitters 20 supply information about the mechanical loading of the switch。