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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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A Geometry-Based Motion Planner for Direct Machining and Control

Cheatham, Robert M. 13 July 2007 (has links) (PDF)
Direct Machining And Control (DMAC) is a new method of controlling machine tools directly from process planning software. A motion planning module is developed for the DMAC system that operates directly off path geometry without pre-tessellation. The motion planner is developed with the intent to process Bezier curves. The motion planning module includes a deterministic predictor-corrector-type curve interpolator, a dynamics limiting module, and a two-pass jerk-limited speed profiling algorithm. The methods are verified by machining an automotive surface in a clay medium and evaluating the resultant machine dynamics, feed rate, and chordal error throughout the machining process.
motion planning
motion planner
motion profile
constant speed
parametric interpolator
predictor-corrector
parametric machining
speed profile
dynamics
NURBS
Bezier
jerk-limited
machine control
DMAC
direct control
CNC
machining
Mechanical Engineering

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