Automatic flexible assembly system based on distributed mobile platforms and control method

Abstract

The invention relates to an automatic assembly technology, and aims to provide an automatic flexible assembly system based on distributed mobile platforms and a control method. The system is providedwith a plurality of mobile platforms, and a plurality of workstations are arranged along a transport line; each mobile platform comprises a tray, a driving device mounted at the bottom thereof and a distributed controller that can receive wireless signals and is connected to the driving device via a signal wire; the workstations comprise an invalid station, a storage station, an artificial stationand an automatic station; a deceleration sensor, a stop sensor and a trigger cylinder are arranged at each workstation, the sensors are connected to a central controller in a wired or wirelesscommunication mode, and the central controller is wirelessly connected to each mobile platform. Compared with the prior art, the system and the method can realize asynchronous motion and synchronous assembly, greatly improve the flexibility of the transport line, and can meet the requirements of diverse flexible assembly. The wireless communication technology can reduce the cost of the control system andimprove the working efficiency and the maneuverability of the system.

Description

technical field [0001] The present invention relates to automated assembly technology. More specifically, the present invention relates to an automated flexible assembly system and control method based on a distributed movable platform. A non-dominated sorting genetic algorithm is used to generate a distributed scheduling strategy to realize the movable platform during the assembly process. Flexible and dynamic adjustment. technical background [0002] Logistics transmission or assembly manufacturing systems will be equipped with special transmission lines. These automated transmission lines have complex designs, single functions, and fixed beats, and do not have the characteristics of flexible adjustment. Mainly manifested in: [0003] First of all, traditional automatic transmission line transmission generally adopts double-speed chain structure or belt structure. The main characteristics of this structure are that the entire transmission line has a relatively large radiu...

AI Technical Summary

Problems solved by technology

[0003] First of all, traditional automatic transmission line transmission generally adopts double-speed chain structure or belt structure. The main characteristics of this structure are that the entire transmission line has a relatively large radius of gyration, unreliable operation, and relatively low precision; the transmission line has a single function and can be assembled. less; the working process is fixed, and each process is assembled according to a unified beat, which cannot guarantee the balance of the entire transmission line, thus affecting the work efficiency of the entire transmission line

In addition, since the tact of the transmission line cannot be dynamically adjusted, the transmission line lacks flexibility, and frequent switching of various types of products will also seriously reduce the efficiency of the transmission line

[0004] Secondly, in the current automatic transmission line, the control system mostly adopts the fieldbus technology based on wired connection as the basic network technology. The transmission line itself uses a unified drive component to drive the multiple pallets carried along the station. Functions that run asynchronously

Although compared with wireless communication, wired connection is more stable and reliable, but there are still many defects

First, the use of wired connection technology for complex control systems increases the cost of the control system; second, repeated plugging and unplugging of cables will cause poor contact, affect communication quality, and reduce system stability; third, wired connections make the movement of the control system The reduction in performance will also reduce the flexibility of the transmission line; fourth, for some mobile control systems, it is impossible to use wired connections to achieve predetermined functions

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