53 lines
2.1 KiB
JavaScript
53 lines
2.1 KiB
JavaScript
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/**
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* Resolves the working pressure for prediction and pushes it onto
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* predictFlow/predictPower/predictCtrl.fDimension. After every push the
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* CoG, efficiency, and distance-from-BEP are recomputed so downstream
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* state stays consistent — exactly what the pre-refactor
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* getMeasuredPressure() did.
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*/
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const eff = require('../prediction/efficiencyMath');
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function getMeasuredPressure(host) {
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if (!host.hasCurve || !host.predictFlow || !host.predictPower || !host.predictCtrl) {
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host.logger.error('No valid curve available to calculate prediction using last known pressure');
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return 0;
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}
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const up = host._getPreferredPressureValue('upstream');
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const dn = host._getPreferredPressureValue('downstream');
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const applyDiff = (diff) => {
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host.predictFlow.fDimension = diff;
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host.predictPower.fDimension = diff;
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host.predictCtrl.fDimension = diff;
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const { cog, minEfficiency } = eff.calcCog(host);
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const efficiency = eff.calcEfficiency(host, host.predictPower.outputY, host.predictFlow.outputY, 'predicted');
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eff.calcDistanceBEP(host, efficiency, cog, minEfficiency);
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};
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if (up != null && dn != null) {
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const diff = dn - up;
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host.logger.debug(`Pressure differential: ${diff}`);
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applyDiff(diff);
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return diff;
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}
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if (dn != null) {
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host.logger.warn(`Using downstream pressure only for prediction: ${dn}. Prediction accuracy is degraded; inject upstream pressure too.`);
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applyDiff(dn);
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return dn;
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}
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if (up != null) {
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host.logger.warn(`Using upstream pressure only for prediction: ${up}. Prediction accuracy is degraded; inject downstream pressure too.`);
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applyDiff(up);
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return up;
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}
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host.logger.error('No valid pressure measurements available to calculate prediction using last known pressure');
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applyDiff(0);
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const fu = host.unitPolicyView.canonical.flow;
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host.measurements.type('flow').variant('predicted').position('max').value(host.predictFlow.currentFxyYMax, Date.now(), fu);
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host.measurements.type('flow').variant('predicted').position('min').value(host.predictFlow.currentFxyYMin, Date.now(), fu);
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return 0;
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}
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module.exports = { getMeasuredPressure };
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