Error significance analysis and compensation for HPKMs
Purpose ‐ The purpose of this paper is to describe a novel error-ranking methodology and two compensation strategies for hybrid parallel kinematic machines (HPKMs). Design/methodology/approach ‐ The paper outlines an error analysis methodology developed for HPKMs and applies the technique to a typical industrial HPKM. Based on the results of this, two compensation strategies are developed and implemented, for both mass-induced and thermal errors. Findings ‐ The paper demonstrates and quantifies the performance improvements possible with appropriate error compensation strategies. Originality/value ‐ The paper introduces a novel and generic methodology for error source analysis and describes two fully implemented compensation strategies which result in a significantly improved level of system performance.
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