pad_shear_asymmetry — DRIVE pegtactile op

• Data kinds: signal × signal → table

• Call: import fullseye as fs; fs.ledger.pad_shear_asymmetry(qR, qL) -> 'dict' (to call the implementation directly, import pegtactile; pegtactile.pad_shear_asymmetry(qR, qL) -> 'dict'; from the registry, opsdrive.get("pad_shear_asymmetry"))

Usage

Splits the membrane shear of the 2 pads into a common component (= axial force, direction of F_z/2) and a differential component (= couple, M/(2w)): common = (q_R + q_L)/2, diff = (q_R − q_L)/2. ratio_v = |diff_v| / (|common_v| + |diff_v|) (0 = same direction, 1 = pure couple), opposite_v = whether the sign of the v component is opposite between left and right. Raises ValueError: not 2 finite components.

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)

• (none yet)

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 (pegtactile)

pad_params · pad_context · peg_wrench_to_pad_loads · pad_loads_to_peg_wrench · pad_marker_displacement · pad_tactile_frame · pad_tactile_read · contact_candidates

*Provenance: pegtactile.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.