lemonergy· battery engineering courses

Lemonergy · Studio block

Sampled backlash

Models a sampled mechanical deadband whose output retains its previous position inside the gap.

Implementation ID
native-sampled-backlash
Reviewed
2026-10-27

Behavior

y follows u beyond either half-width boundary; otherwise previous y is retained. The worked example connects this operation to signals in Lemonergy Studio.

Interface

Sampled backlash interfaceInputs or arguments on the left, observed outputs on the right. Conserving terminals appear below the component. The tables give units and behavior.Sampled backlashStudio blockin0out0
Original Lemonergy interface view. Lines identify ports; they are not a completed simulation circuit.
Ports and observed outputs
NameDirectionUnitMeaning
in0input1Value; real scalar.
out0output1Output; real scalar.

Parameters

Defaults are initial model values. Select values for your own model and operating conditions.

Configuration fields
ParameterUnitDefaultMeaning and limits
Sample period
sampleTimeS		s0.1Exact sample grid period. Elapsed-time integration begins after initialization.
Minimum 1e-06
Deadband width
params[0]		12Configured finite numerical parameter.
Initial output
tables[0]		1[0]Configured coefficients or initial values in column-major order.

Equations and rules

  • y follows u beyond either half-width boundary; otherwise previous y is retained

Worked example

Sampled backlash — worked example

Value = 3. Output at 0 s = 2.

Open Studio example after release →
Numerical checks for the bundled synthetic example
OutputTime (s)Expected valueUnitAbsolute tolerance
Output
out0		0211e-08

Explore the recorded outputs

Sampled backlash recorded example

Sampled backlash
Sampled backlash against timeRecorded synthetic simulation values. Time in seconds; output in —.1.501.750.2520.52.250.752.51—Time (s)
Sampled backlash: 2 — at 0 s

11 actual recorded samples. Lines are visual guides between samples. Synthetic example, not measured cell data.

Download the recorded samples (JSON) · Open this Studio example after release

Use in a workflow

Sampled backlash — worked example

Models a sampled mechanical deadband whose output retains its previous position inside the gap.

  1. Sampled backlash: y follows u beyond either half-width boundary; otherwise previous y is retained. The worked example connects this operation to signals in Lemonergy Studio.
    • Use the block reference for settings and connections.
    • Implementation tested locally; public release pending.
Open Studio example after release

Connected concepts

Limits and interpretation

  • Backlash memory updates on configured sample instants. Continuous reversal localization is not implemented.
  • Shapes and element types are explicit. Values must be finite; automatic reshaping and unit conversion are not performed.

Reference basis

This software operation and its numerical conventions are defined by the public contract and worked example; no external research result is claimed.

Implementation sources

This reference follows the public interface and locally verified numerical checks for an upcoming release.

Contract: Lemonergy Studio public contract · Verification record: verification-2026-10-27

  • docs/glossary/native-block-verification.json

This implementation and its workflow uses (JSON) · Knowledge graph (JSON-LD)