University of Illinois Urbana-Champaign

System Characterization, Control and Optimal Feed -Rate Scheduling for High -Speed Machining and Nano Positioning

Dong, Jingyan

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https://hdl.handle.net/2142/83856

Description

Title
System Characterization, Control and Optimal Feed -Rate Scheduling for High -Speed Machining and Nano Positioning
Author(s)
Dong, Jingyan
Issue Date
2006
Doctoral Committee Chair(s)
  • Ferreira, Placid M.
  • James A. Stori
Department of Study
Mechanical Engineering
Discipline
Mechanical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Mechanical
Language
eng
Abstract
Finally, a provably-optimal feedrate-optimization (trajectory planning) algorithm is developed to exploit the capabilities of a given physical motion system. System capabilities and process requirements are modeled and formulated as constraints to drive the algorithm. The resulting trajectory makes full use of the system capabilities and completes the required task in the minimum time, while satisfying all performance requirements such as dimensional error, maximum cutting force, etc. A bi-directional scan structure is adopted for the algorithm and a sub-optimization structure for each optimized point. These features make the algorithm computationally efficient, extendable to any state-dependent constraints and robust with respect to singularity difficulties often encountered in the optimal control approach. By studying the behavior of the algorithm in the phase plane, global optimality of this feedrate-optimization algorithm is proved.
Graduation Semester
2006
Type of Resource
text
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http://hdl.handle.net/2142/83856

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