关键词: 在线适应控制, 恒负荷切削, 行为模型, 数控系统, 有限状态机

Abstract: To realize machining parameters online detection and feedback control,a Numerical Control (NC) machining controller with open and modularity was constructed.To realize machining processing parameters'hard real time collection and adaptive control with controller,NC system acquisition scheme was designed and developed based on Real Time eXtension (RTX) environment.To solve the problem of online effective integration between adaptive and interpolation control thread,a behavior modeling was built with level type finite state machine technology for the open architecture NC system.To realize the effective integration of machine tool's NC machining intelligent strategies,a general frame structure for control law was built in controller.The relative technologies correctness and superiority of online constant load constrained adaptive control was verified by machining experiments with step type aluminum alloy work-piece.

Key words: online adaptive control, constant load cutting, behavior model, numerical control system, finite state machine