The invention discloses a
numerical control machine tool dynamic error cooperative compensation control method adaptive to high-speed
machining, and relates to the technical field of
numerical control machine tool error control. According to the method, a multi-source dynamic error
sensing system comprising a
grating displacement sensor, a six-dimensional
force sensor and the like is constructed to acquire data; after
wavelet threshold denoising and Kalman filtering preprocessing, inputting a three-layer LSTM error
coupling prediction model combined with an attention mechanism, embedding a
servo motor load characteristic curve in the model, and outputting three types of error compensation amounts; through
servo-level compensation and
machining-level compensation, the position of a feed shaft, the rotating speed of a main shaft, the
cutting feed rate and the behavior of a micro-displacement
actuator are corrected, and
machining errors caused by deflection and vibration conduction of the main shaft are counteracted. And iteratively updating
model parameters by using a
gradient descent algorithm. According to the method, through multi-source error synchronous sensing, error
coupling modeling and hierarchical cooperative compensation, dynamic error cooperative control more adaptive to a high-speed
processing scene is realized, and the method has a wide application value.