機械外文翻譯--分布式機床的設(shè)計(參考版)
2025-05-17 00:03本頁面
【正文】 Design of the Distributed Architecture of a Machinetool Using FIP Fieldbus Daping SONG, Thierry DIVOUX, Francis LEPAGE Centre de Recherche en Automatique de Nancy Universite de Nancy I, BP239, 54506 VandoeuvrelesNancy cedex, France Abstract: In this paper we propose a distributed control system based on FIP fieldbus. It is applied to machinetool as a replacement for the traditional CNC (Computerized Numerical Controller). The system is posed of a set of microprocessorbased modules (PCs, motion controllers, I/OS, . ..) interconnected by FLP realtime work. The main idea is to enable each module to be intelligent, improving thus the flexibility and the fault tolerant capability of the whole system. Each module being a subcontrol system, acplishes its own control task, some of them for motion control and others for evaluating sensors and regulating actuators. The munication (information exchanges and synchronization) among these modules is ensured by FLP. This system allows both task distribution as well as equtpment topological distribution. We discuss some distribution criteria and describe an experimental implementation. 1. Introduction Distributed system architecture has been the subject of many research activities in recent years. It plays a major role in systems integration. In the machinetool control domain, present CNC technology has its inherent shortings. It is centralized, limited to a fixed number of axis timeconsuming, inflexible and difficult to be integrated in CIM environment. The rapid development of VLSI microprocessor technology and munication work enables the distributed control to be considered. Distributed control systems present the advantage of improving performance, modularity, integrity and reliability while allowing incremental expansion without plete hardware replacement. It offers a promising alternative to control system architecture. This paper is dedicated to study a distributed machinetool architecture. It is based on intelligent devices interconnected on munication link. It is characterized by distributed tasks and distributed data, but with unique control access system. It is designed by using standard devices and FIP fieldbus and verified by a experimental implementation, in which the system controls a multiaxis machine to successfully execute a coordinated motion as well as to respond to sensors values changes. The paper is organized as follows. In section 2, the machinetool control system architecture is described. Section 2 gives a brief description of FIP and Section 3 outlines our experimental implementation. We conclude in section 4 with some general remarks and future research perspectives. 2. Machinetool control system architecture The machinetool control system is a realtime and multitask system. Its classical functional architecture is shown in . It consists of three units: user interface/supervisiou/programming unit, servo unit, and sensors/actuators unit. The main mission of this system is to control workpart machining. It includes two differe
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