VFCL运行原理1（国外英文资料）.docVIP

VFCL运行原理1（国外英文资料） VFCL elevator electrical control system structure, electrical control system structure VFCL elevator electric control system structure mainly include management, control, drag, interface and serial transmission part and the elevator group control part of the picture information using optical fiber communication between the management section. The VFCL elevator group control system manages four elevators. As shown in the group control, the layer station call signal is received and processed by the group control section. Second, multicomputer control bus structure The VFCL elevator control system is composed of multi-microcomputer machine control, and the multi-microcomputer control bus is shown in figure 2. Cc-cpus are used for both management and control, respectively, for different operations cycles. C-cpus are run in a scheduled interrupt mode. The cc-cpu divides software into different parts, each with its own operation cycle. CC - by external H/W CPU timer circuits in every 5 mm to RST7.5 an interrupt signal from fracture, every time a CC - CPU execution interrupt subroutine, and statistics, the number of interrupt according to statistical results determine which function to perform a subroutine. According to the requirements of the timely response, cc-cpus divide the software into three parts: the software that the operation cycle is 25mm, the software that the operation cycle is 50mm and the software that the computation period is 100mm. In the process of software implementation, software timing requirements higher, execution frequency is higher, and the general management software timing requirements is low, execution frequency is low. ST - CPU is mainly for the summons and landings command signal acquisition and processing, the summons and landings instruction adopt serial transmission signal, command signal within the summons and landings are independent of each other, two serial transmission. The dr-cpu mainly controls the drag section. C