Novel Error Separation Method for Straightness Measurement
novel time-domain error separation method which can reconstruct straightness profile of workpiece exactly for on-machine measurement has successfully been developed. The proposed method is based on difference measurement and can use two or three displacement probes. It possesses following characteristics: (i) adapting to long or short workpiece, (ii) assuming no prior knowledge, (iii) employing large shears, (iv) needing no accurate zero-adjustment of probes, and (v) reconstructing various surfaces including smooth, non-smooth, periodic and non-periodic profiles with no theoretical error. The shortest length which can be reconstructed exactly has been calculated in time-domain method. The theoretical analysis justifies the effectiveness of this method.
Guo Fan JIN, Wing Bun LEE, Chi Fai CHEUNG and Suet TO
Z. Q. Yin et al., "Novel Error Separation Method for Straightness Measurement", Key Engineering Materials, Vols. 364-366, pp. 572-577, 2008