3.4 KiB

Raw Blame History

BlenderPID_PIDSPCalc

Initialization

Initialize variables
Set up slew rate limits
Configure timer variables

Beverage Type Detection

Sugar Beverage

Calculate syrup percentage based on Brix

First Production Mode

Formula: gActualSyrupPerc = \frac{ProductBrix + ProdBrixOffset + gFirstProdExtraBrix}{gActualSyrupBrix}
Add extra Brix for first production

Normal Production Mode

Formula: gActualSyrupPerc = \frac{ProductBrix + ProdBrixOffset + gBrixTrackingCorr}{gActualSyrupBrix}
Apply Brix tracking correction

Diet Beverage

Calculate syrup percentage based on ratio

First Production Mode

Formula: gActualSyrupPerc = \frac{1}{Ratio + 1} + gFirstProdDietExtraSyr
Add extra syrup (1.2% more)

Normal Production Mode

Formula: gActualSyrupPerc = \frac{1}{Ratio + 1}

Water Recipe

Set water percentage to 100%
Set syrup percentage to 0%

Ratio Calculations

Water percentage: gActualWaterPerc = 1 - gActualSyrupPerc
Mixing ratio: gActualRatioM = \frac{gActualWaterPerc}{gActualSyrupPerc}
Volumetric ratio: gActualSPRatioVol = \frac{gActualRatioM \times gActualSyrupDens}{gH2ODensity}

Production Mode Operations

CO2 Equilibrium Pressure Calculation

Calculate pressure based on CO2 volumes
Add safety margin (0.3 bar)
Set tank pressure setpoints

Production Setpoint Management

Apply production speed limits
Handle first production special conditions
Apply slew rate limiting for smooth changes

Water Flow Control

Formula: gSPH2O = \frac{gActualProdSP}{gActualSPRatioVol + 1.0} \times gActualSPRatioVol
Handle water-only recipes

Critical Blending Detection

Monitor blending error magnitude
Monitor flow deviation percentage
Enable tracking mode if critical

Syrup Flow Control

Track water flow in critical conditions
Calculate reference setpoint
Apply blend error correction
Formula: gSPSYR = (gSyrSPRef + gSyrSPTemp) \times gActualSyrupDens

CO2 and Gas Control

CO2 Temperature Compensation

Calculate temperature-based compensation
Account for deaeration effect

Oxygen Content Calculation

Calculate water O2 content
Calculate syrup O2 content
Calculate product O2 content: gProductO2 = \frac{gActualRatioM \times gDeairWaterO2 + gSyrupO2}{gActualRatioM + 1}

CO2 Injection Control

Calculate CO2 volumes setpoint
Apply corrections based on flow
Formula: gSPCO2 = gCO2SPRef + gCO2SPTemp
First production: gActualSPCO2 = (CO2Vols - gDeairCO2Comp) \times gFirstProdExtraCO2Fact \times CO2Fact \times (1 - \frac{ProductBrix}{100.0})

Secondary Gas Injection

Calculate second gas volumes if enabled
Formula: gActualSPGAS2 = GAS2Vols \times GAS2Fact \times (1 - \frac{ProductBrix}{100.0})
Set to zero if disabled

Tank Level Control

Syrup Tank

Set level based on operation mode
Use slew limiting for transitions
Handle CIP mode conditions

Deaeration Tank

Set level based on operation mode
Handle startup conditions
Control deaeration effectiveness

Storage Tank

Set level based on target level
Apply slew rate limiting

Temperature Control

Product Chiller Mode

Set water and product temperature equal
Match recipe temperature setpoint

Water Chiller Mode

Compensate for syrup temperature
Formula: gSPH2OTemperature = SPProdTemp - \frac{gCpSyrup \times (gMeterSyrTemp - SPProdTemp) \times gActualSyrupDens}{gCpH2O}

CIP Mode

Set appropriate temperature for cleaning