Research on the data hungry problem in CNC system based on the architecture of Real-time multitask

Abstract

In order to meet the needs of high-performance and open CNC (computer numerical control) system, first of all, a variety of task features and the real-time response requirements of various tasks in the entire data processing of the CNC system are analyzed in-depth. Then, the data hungry problem in the existing architecture of CNC system is pointed out when the system is running on high speed and high precision processing. On the basis of this, a solution mechanism is proposed that the related task units of the CNC system must be further broken down and the task unit which involves the function of decoding and data transmission could be designed as an independent process or thread that has a fixed implementation cycle. At the same time the special scheduling mechanism provided by the Real-time operating system to improve the implementation of priority, which makes the data of decoding be transmitted to the underlying module uninterruptedly. Thus, the system performance is improved overall. Finally, the experiments results verify that the proposed method is reasonable and correct.

CNC Tool Path Generation on Multi-Core Processors

“…Regarding approaches specifically focusing on CNC software functions, Hong et al [9] proposed a method to leverage the execution of the CNC interpreter in order to be able to provide enough data to the next module in the data processing flow. The Interpreter is run in a separate thread independently from other modules in the system.…”