Numerical control system motion trail control method based on neural network

Abstract

The invention provides a numerical control system motion trail control method based on a neural network. Firstly, a neural network is constructed as a decision model; the device comprises an input layer, a plurality of hidden layers and an output layer, the input layer inputs a state vector of a tool path at the current moment; wherein the state vector is obtained through characteristic conversionaccording to a machining state fed back by a controlled machine tool sensor and a tool motion trail instruction, the output layer outputs a decision action at the current moment, and the decision action at the current moment is subjected to characteristic conversion to obtain a tool position at the next moment to serve as a servo instruction; training a decision model by utilizing a reinforcementlearning algorithm and combining a reward and punishment strategy; and finally, tool movement track control of the machine tool is completed by using the trained decision model. The method can respond to the change of the motion trail of the cutter in real time, supports the online modification of machining parameters, and improves the adaptability, machining precision and machining efficiency ofthe motion trail control of the numerical control system.

Description

technical field [0001] The invention belongs to the technical field of numerical control machining trajectory planning, and in particular relates to a neural network-based numerical control system movement trajectory control method. Background technique [0002] The CNC system is the core control device of the CNC machine tool, and the motion trajectory control in the CNC machining process is completed by the CNC system. The NC file is a file describing the tool movement trajectory during the machining process of the CNC machine tool, and the G code (ISO6983) format is usually used to describe the tool movement trajectory. According to the input NC file, the numerical control system realizes the parsing of the NC file through the compiling (decoding) module, and obtains the movement track of the tool. [0003] The tool motion trajectory control method of the CNC system is: according to the motion trajectory of the tool, the motion trajectory control of the CNC system is rea...

AI Technical Summary

Problems solved by technology

The existing CNC system motion trajectory control method cannot meet the needs of intelligent manufacturing

Images