large_deformation_inverse — DRIVE tacdome op

• Data kinds: scalar × scalar × table → table

• Call: import fullseye as fs; fs.ledger.large_deformation_inverse(a: 'float', L: 'float', lin: 'dict', reading: 'str' = 'derived', tol: 'float' = 1e-14) -> 'dict' (to call the implementation directly, import tacdome; tacdome.large_deformation_inverse(a: 'float', L: 'float', lin: 'dict', reading: 'str' = 'derived', tol: 'float' = 1e-14) -> 'dict'; from the registry, opsdrive.get("large_deformation_inverse"))

Usage

Reads indentation and force backward from a measured contact radius a (solving Eq. 4 for d, then the force from Eq. 2). The core of the sensor readout.

> The detailed description below is the original text — the summary and the headings are translated.

平頭は閉形式 d = 1 − (a0/a)²。それ以外は a(d) = (a/a_L)(d)·D·(dL)^{1/p} が d の単調増加なので二分法(相対 tol)。

返り: d・delta・F・F_L・kappa・F_hertz_from_radius(同じ a を線形解 = Hertz で読んだ力)・ err_hertz_pct(Hertz で読んだ力の誤差)・beyond_validated・iterations。Raises ValueError: a ≤ 0、平頭で a ≤ a0、d が 1 に届いても a に足りない(数値の範囲外)。

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_tacdome_large_deformation — py -3.11 examples/poc_tacdome_large_deformation.py

Ops the type connects to (they accept table as input)

course_layout · course_occupancy · course_contains · world_build · world_camera · world_move · lidar_scan · rss_longitudinal_same

Same category (tacdome)

powerlaw_linear_contact · largedef_correction · largedef_radius_ratio · largedef_universal_correction · large_deformation_contact · mdr_spring_bed · neohookean_cylinder_exact · hertz_small_strain_error


*Provenance: tacdome.py — DRIVE operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.