CaltechAUTHORS
Published August 29, 2022 | Version public
Journal Article Metadata-only

Adam SPGD algorithm in freeform surface in-process interferometry

Creators

  • 1. ROR icon Anhui University
  • 2. ROR icon California Institute of Technology

Abstract

The adaptive interferometer has been recently proposed to realize the metrology of unknown freeform surfaces with several restructured algorithms for feedback control. The adaptive moment estimation (Adam) stochastic parallel gradient descent (SPGD) algorithm is employed in this paper for fringes release. The proposed algorithm makes considerable progress in relieving conflict of the convergence rate, speed, and parameters intervention. Simulations and experiments show its 37% time saving and 99% convergence rate, with arbitrarily configured parameter increment, compared with the SPGD algorithm. It would have great potential in in-process tests in freeform surface fabrication or large-volume testing.

Additional Information

Funding: National Natural Science Foundation of China (61705002).

Additional details

Identifiers

Eprint ID
117083
Resolver ID
CaltechAUTHORS:20220919-711894900

Related works

Describes
10.1364/OE.470007 (DOI)

Funding

National Natural Science Foundation of China
61705002

Dates

Created
2022-09-23
Created from EPrint's datestamp field
Updated
2022-09-23
Created from EPrint's last_modified field