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DriCy Selo
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Michael Alfons Schlüter
DriCy Selo
Commits
9f3f2584
Commit
9f3f2584
authored
2 years ago
by
Michael Alfons Schlüter
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Test of Formulas
parent
c1854c8f
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reproduction
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...
...
@@ -38,8 +38,9 @@ F_{A} = a \cdot (M_{w} \cdot \lambda + M_{z})
```
### DriCy_Selo.aerodynamic_resistance(vehicle, v)
This function calculates the aerodynamic resistance acording to:
F_{L} = c_{w}
\\
cdot A_{front}
\\
cdot
\\
frac{p_{air}}{2}
\\
cdot v^2
```
math
F_{L} = c_{w} \cdot A_{front} \cdot \frac{p_{air}}{2} \cdot v^2
```
### DriCy_Selo.calc_PMSM(vehicle, T, n, verbose=False)
Calculation of the inverter set point for a given vehicle, tourque and speed of a permanent magnet synchronos motor (PMSM).
ToDo: speed up -> add complete numerical calculation
...
...
@@ -72,25 +73,28 @@ decimal separator: dot[.]
### DriCy_Selo.read_drive_cycle(file, vehicle)
This fuction reads the drive cycle of the cycle folder and calculates acceloration, total force, power, rouns per second, torque…:
```
math
\omega_{1/s} = \frac{v_{\mathrm{m/s}}}{wheel_{radius} \cdot 2 \pi} \cdot i_{g}
\\
omega_{1/s} =
\\
frac{v_{
\\
mathrm{m/s}}}{wheel_{radius}
\\
cdot 2
\\
pi}
\\
cdot i_{g}
T =
\\
frac{Force
\\
cdot wheel_{radius}}{i_{g}}
\\
cdot
\\
eta_{i_{g}}
\\
;
\\
mathrm{for
\\
; M => 0}
T = \frac{Force \cdot wheel_{radius}}{i_{g}} \cdot \eta_{i_{g}} \\; \mathrm{for M => 0}
T =
\\
frac{Force
\\
cdot wheel_{radius}}{i_{g}}
\\
cdot
\\
frac{1}{
\\
eta_{i_{g}}}
\\
;
\\
mathrm{for
\\
; M < 0}
T = \frac{Force \cdot wheel_{radius}}{i_{g}} \cdot \frac{1}{\eta_{i_{g}}} \; \mathrm{for M < 0}
```
### DriCy_Selo.read_toml(file)
This function loads the data of the vehicle.
### DriCy_Selo.rolling_fiction(vehicle, v, alpha)
This function calculates the rolling friction acording to Mitschke, Wallentowitz 2014 - Dynamik der Kraftfahzeuge p. 14.:
F_{R} = (M_{w} + M_{z})
\\
cdot g
\\
cdot cos(
\\
alpha)
\\
cdot
\\
left( f_{R0} + f_{R1}
\\
cdot
\\
frac{v}{100 km/h} + f_{R4}
\\
cdot {
\\
left(
\\
frac{v}{100 km/h}
\\
right)}^4
\\
right)
```
math
F_{R} = (M_{w} + M_{z}) \cdot g \cdot cos(\alpha) \cdot \left( f_{R0} + f_{R1} \cdot \\frac{v}{100 km/h} + f_{R4} \cdot {\left(\frac{v}{100 km/h}\right)}^4\right)
```
### DriCy_Selo.slope_resistance(vehicle, alpha)
This function calculates the slope resistance acording to:
F_{S} = sin (
\\
alpha)
\\
cdot (M_{w} + M_{z})
\\
cdot g
### DriCy_Selo.total_force(vehicle, a, v, alpha)
This function calculates the total force for a vehicle in one operation point:
```
math
F_{Total} = F_{S} + F_{A} + F_{L} + F_{R}
```
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