Development of control schemes commensurate with the requisite performance of high speed machining systems is the focus of this research. A robust control scheme for high speed milling processes has been developed. This control scheme was to automatically control the cutting force using a fixed controller. Since it does not require any on-line computation, it can be applied to high speed machining systems.
Another area of research is to develop a high performance robust control scheme for high velocity linear motors and drives. The objective of this control scheme was to minimize the traveling time while suppressing the vibration of the a flexible structure mounted on the linear drive. The design control scheme provides guaranteed transient performance for the linear motor with varying inertia due to the added workpiece weight.
Current project is concerned with development of a robust adaptive control algorithm to improve the stiffness of linear motors. A controller which can provide higher servo stiffness will lead to the successful use of linear motors for high speed machining systems demands for a controller which can provide higher servo stiffness. The current experimental set-up includes a high speed motion table with rapid acceleration/deceleration (2g) controlled by CNC.
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