Real-time flexible acceleration and deceleration control algorithm based on adaptive forward-looking and predictive correction

Abstract

The invention relates to a real-time flexible acceleration and deceleration control algorithm based on self-adaptive forward-looking and predictive correction, comprising the following steps: adopting acceleration and deceleration feasibility judgment conditions to perform forward-looking processing to ensure the accessibility of acceleration and deceleration and the real-time performance of forward-looking; applying prediction The correction method calculates the feed speed of the next interpolation cycle in real time to ensure the continuous change of speed and acceleration during the machining process; under the premise of satisfying the dynamic performance of the machine tool, the current forward-looking processing results and speed planning results are adjusted to respond to machining in a timely manner Changes in machine parameters. The invention has high processing speed and high processing precision. The invention can realize real-time flexible acceleration and deceleration control of the numerical control system, support dynamic adjustment, improve processing efficiency and processing quality, and meet actual processing requirements.

Description

technical field [0001] The invention relates to self-adaptive forward-looking, real-time flexible speed planning and dynamic adjustment in high-speed and high-quality machining, and belongs to the technical field of numerical control machining. Background technique [0002] Velocity planning technology is one of the key technologies of high-end CNC system motion trajectory control, and it is an important index to evaluate the performance of CNC system, which directly affects the processing efficiency and quality of CNC machine tools. At present, high-speed and high-quality machining put forward higher requirements on the acceleration and deceleration control capabilities of CNC machine tools. On the one hand, it is required that the tool can move from the current position to the next position in the shortest time; on the other hand, it is required In the process of tool movement, ensure the smooth operation of the CNC machine tool, and avoid impact, out of step, overtravel o...

AI Technical Summary

Problems solved by technology

However, the implementation process of the above method is relatively complicated, involving multiple parameters, and requires a lot of time for numerical calculation

These algorithms mostly use offline speed planning, and in the process of processing, when the processing parameters change, the CNC machine tool cannot respond in time, and cannot well meet the actual processing needs.

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