更新202606222
This commit is contained in:
GukSang.Jin
@@ -36,10 +36,13 @@ namespace Footwear_Test_methodsfor_wholeshoe_Slipresistanceperformance.ViewModel
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private const double MinimumAnalysisLoadRatio = 0.8;
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// 预触发缓冲：滑动检测前持续缓存的力/位移历史长度，用于回溯真实滑动起点（保证第一个摩擦力峰值被采到）。
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private const double PreTriggerWindowSeconds = 0.5;
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// 滑动检测：载荷达标后，水平摩擦力较静置接触基线上升超过该值即判定已进入滑动。
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private const double SlidingFrictionTriggerRiseN = 5.0;
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// 回溯滑动起点：从检测点向前回溯，直到摩擦力回到基线附近（该裕度内）即认定为 onset（t=0）。
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private const double SlidingOnsetFrictionMarginN = 2.0;
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// 滑动检测：载荷达标后只接受明显陡升，避免低幅慢漂移提前把曲线 0 点定错。
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private const double SlidingFrictionTriggerRiseN = 35.0;
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private const double SlidingFrictionTriggerLookbackSeconds = 0.12;
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private const double SlidingFrictionTriggerSlopeN = 25.0;
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private const double SlidingDisplacementFrictionRiseN = 20.0;
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// 回溯滑动起点：在触发前短窗口内找摩擦最低点，贴近标准曲线中首峰前的真实滑动起点。
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private const double SlidingOnsetSearchBackSeconds = 0.12;
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// 曲线/分析窗口：滑动开始后只保留该时长，剔除加载段与滑动后回程，对应标准曲线图的有效区间。
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private const double CurveEndSeconds = 1.0;
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private const int StaticPeakDropConfirmationPointCount = 3;
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@@ -900,26 +903,67 @@ namespace Footwear_Test_methodsfor_wholeshoe_Slipresistanceperformance.ViewModel
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return;
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}
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var frictionRose = samplePoint.HorizontalFrictionN - slidingBaselineFrictionN >= SlidingFrictionTriggerRiseN;
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var frictionRiseFromBaseline = samplePoint.HorizontalFrictionN - slidingBaselineFrictionN;
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var lookbackPoint = FindLookbackPoint(samplePoint.TimeSeconds - SlidingFrictionTriggerLookbackSeconds);
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var frictionRiseFromLookback = lookbackPoint is null
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? 0
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: samplePoint.HorizontalFrictionN - lookbackPoint.HorizontalFrictionN;
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var frictionRose = frictionRiseFromBaseline >= SlidingFrictionTriggerRiseN
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&& frictionRiseFromLookback >= SlidingFrictionTriggerSlopeN;
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var displacementMoved = Math.Abs(samplePoint.DisplacementMm - runStartDisplacementMm) >= SlidingStartDisplacementThresholdMm;
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if (frictionRose || displacementMoved)
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var displacementWithFriction = displacementMoved
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&& frictionRiseFromBaseline >= SlidingDisplacementFrictionRiseN;
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if (frictionRose || displacementWithFriction)
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{
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MarkSlidingStartFromBuffer(frictionRose ? "FrictionRise" : "DisplacementMove");
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MarkSlidingStartFromBuffer(frictionRose ? "FrictionSharpRise" : "DisplacementWithFrictionRise");
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return;
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}
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if (displacementMoved)
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{
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Log.Debug(
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"滑动起点候选未触发：TestNumber={TestNumber}, Reason=DisplacementWithoutFrictionRise, DisplacementDelta={DisplacementDelta:F3}mm, FrictionRiseFromBaseline={FrictionRiseFromBaseline:F3}N, FrictionRiseFromLookback={FrictionRiseFromLookback:F3}N, BaselineFriction={BaselineFriction:F3}N, CurrentFriction={CurrentFriction:F3}N",
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TestNumber,
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Math.Abs(samplePoint.DisplacementMm - runStartDisplacementMm),
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frictionRiseFromBaseline,
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frictionRiseFromLookback,
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slidingBaselineFrictionN,
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samplePoint.HorizontalFrictionN);
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}
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}
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// 回溯预触发缓冲到摩擦力刚离开基线的那一刻设为 t=0，并把该时刻起的缓冲点补进曲线，保证第一个峰值被采到。
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private void MarkSlidingStartFromBuffer(string trigger)
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private SlipDataPoint? FindLookbackPoint(double targetTime)
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{
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var onsetIndex = preTriggerBuffer.Count - 1;
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while (onsetIndex > 0
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&& preTriggerBuffer[onsetIndex - 1].HorizontalFrictionN > slidingBaselineFrictionN + SlidingOnsetFrictionMarginN)
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for (var index = preTriggerBuffer.Count - 1; index >= 0; index--)
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{
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onsetIndex--;
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if (preTriggerBuffer[index].TimeSeconds <= targetTime)
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{
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return preTriggerBuffer[index];
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}
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}
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return preTriggerBuffer.Count > 0 ? preTriggerBuffer[0] : null;
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}
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// 回溯预触发缓冲到摩擦力陡升前的低点设为 t=0，并把该时刻起的缓冲点补进曲线，保证第一个峰值被采到。
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private void MarkSlidingStartFromBuffer(string trigger)
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{
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var triggerPoint = preTriggerBuffer[^1];
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var earliestOnsetTime = triggerPoint.TimeSeconds - SlidingOnsetSearchBackSeconds;
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var onsetIndex = preTriggerBuffer.Count - 1;
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for (var index = preTriggerBuffer.Count - 1; index >= 0; index--)
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{
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if (preTriggerBuffer[index].TimeSeconds < earliestOnsetTime)
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{
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break;
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}
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if (preTriggerBuffer[index].HorizontalFrictionN <= preTriggerBuffer[onsetIndex].HorizontalFrictionN)
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{
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onsetIndex = index;
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}
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}
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// 多回退一个点（≈基线水平）作为 t=0，使曲线起点的摩擦力接近基线、随后升至首峰，与标准曲线一致。
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onsetIndex = Math.Max(0, onsetIndex - 1);
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var onset = preTriggerBuffer[onsetIndex];
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slidingStartTimeSeconds = onset.TimeSeconds;
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slidingStartDisplacementMm = onset.DisplacementMm;
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@@ -940,12 +984,17 @@ namespace Footwear_Test_methodsfor_wholeshoe_Slipresistanceperformance.ViewModel
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CurrentStatus = "已检测到有效滑动开始：曲线从 0.000 s 开始记录";
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Log.Information(
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"检测到有效滑动开始并建立曲线零点：TestNumber={TestNumber}, Trigger={Trigger}, SlidingStartTime={SlidingStartTime:F3}s, BaselineFriction={BaselineFriction:F3}N, OnsetDisplacement={OnsetDisplacement:F3}mm, FlushedPointCount={FlushedPointCount}",
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"检测到有效滑动开始并建立曲线零点：TestNumber={TestNumber}, Trigger={Trigger}, SlidingStartTime={SlidingStartTime:F3}s, TriggerTime={TriggerTime:F3}s, BaselineFriction={BaselineFriction:F3}N, OnsetFriction={OnsetFriction:F3}N, TriggerFriction={TriggerFriction:F3}N, FrictionRise={FrictionRise:F3}N, OnsetDisplacement={OnsetDisplacement:F3}mm, TriggerDisplacement={TriggerDisplacement:F3}mm, FlushedPointCount={FlushedPointCount}",
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TestNumber,
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trigger,
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onset.TimeSeconds,
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triggerPoint.TimeSeconds,
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slidingBaselineFrictionN,
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onset.HorizontalFrictionN,
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triggerPoint.HorizontalFrictionN,
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triggerPoint.HorizontalFrictionN - onset.HorizontalFrictionN,
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slidingStartDisplacementMm,
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triggerPoint.DisplacementMm,
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currentRun.Count);
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}
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