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Hybrid Control Algorithm For Spindle Current Regulation Of CNC Machine Tools
Hybrid Control Algorithm For Spindle Current Regulation Of CNC Machine Tools
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机译:数控机床主轴电流调节的混合控制算法
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摘要
PURPOSE: A multiple control method for controlling current of a main shaft in a CNC(Computerized Numerical Control) machine tool is provided to maintain constantly a current value of the main shaft by increasing or reducing a transfer speed according to states of processes. CONSTITUTION: A current measuring process is performed to measure the amount of real-time variable current of a main shaft(S100). A CNC machine tool is modeled as the first system having a delay time by formalizing a relationship between various parameter values obtained from a test value of the CNC machine tool(S200). The current of a main shaft is constantly maintained by designing a controller for controlling a transfer speed in order to control the modeled CNC machine tool(S300). Accordingly, the control process can be performed without a variation of load in the main shaft by obtaining the efficient transfer speed.
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