jamming_diagram — DRIVE pegsim op

• Data kinds: table → table

• Call: import fullseye as fs; fs.ledger.jamming_diagram(kp, depth: 'float', fx_over_fz: 'float | None' = None, m_over_rfz: 'float | None' = None) -> 'dict' (to call the implementation directly, import pegsim; pegsim.jamming_diagram(kp, depth: 'float', fx_over_fz: 'float | None' = None, m_over_rfz: 'float | None' = None) -> 'dict'; from the registry, opsdrive.get("jamming_diagram"))

Usage

> This operator's description has not been translated yet. The original text follows as it is.

かじり(jamming)の図(OCW p.34): 二点接触の深さ l [m] で、加える力の比 (F_x/F_z, M/(rF_z)) が進める領域の平行四辺形。

λ = l/(2rμ)。頂点は (−1/μ, 2λ+1), (1/μ, −1), (1/μ, −(2λ+1)), (−1/μ, 1)、縦軸の切片 ±λ、縦辺は F_x/F_z = ±1/μ。深さが増える

(λ が増える)と縦に広がり、かじりにくくなる。`fx_over_fz と m_over_rfz を与えると inside`(内側なら進む)と

`margin`(4 辺の不等式の最小の余裕、負なら外)も返す。

Raises `ValueError`: l < 0、μ ≤ 0(摩擦なしは平行四辺形が無限に広い)。

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_peg_failure_recovery — py -3.11 examples/poc_peg_failure_recovery.py

• poc_pegsim_insertion — py -3.11 examples/poc_pegsim_insertion.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 (pegsim)

peg_params · whitney_clearance · two_point_depth · wedging_check · chamfer_capture · contact_state_predict · circle_fit_known_radius · cylinder_fit_known_radius


*Provenance: pegsim.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.