The model has been updated to include a more realistic torque curve that varies with vehicle speed. Instead of torque be

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The Model Has Been Updated To Include A More Realistic Torque Curve That Varies With Vehicle Speed Instead Of Torque Be 1 (95.77 KiB) Viewed 8 times

The model has been updated to include a more realistic torque curve that varies with vehicle speed. Instead of torque being constant at all speeds, the torque value at vlow (and any velocity lower than vlow) is Tm, but then reduces to 0.5*Tm at vhigh, as shown in Figure 1. Tm Torque output from motor (Nm) 0.5*Tm 0 0 vlow vhigh Velocity (m/s) Figure 1: Torque curve of motor versus vehicle speed The function pngfunc2 includes this variation. NOTE: The function pngfunc2 akes the same input arguments as pngfunc. It automatically adjusts the torque Assume the following values for these parameters: es corresponding to your input arguments for Tm, vhigh and vlow, and culates the corresponding torque sed upon actual velocity. Cd = 0.1; % no units Af = 1.4; % m^2 Crr = 0.002; % no units mveh = 75; % kg vlow = 2; % m/s vhigh = 6; % m/s GR = 6; % no units Produce code that determines the values for the maximum motor torque, Tm, between 2 and 5 Nm in steps of 0.01 Nm using the original pngfunc function. Show the results by plotting a graph of percentage time on against maximum motor torque (i.e. pcttimeas the y-axis, and Tm as the x-axis). The y-axis should have the label 'Percentage Time On (%)' and the x-axis should have the label 'Maximum motor torque (Nm)'.
4 cd 1 clear 2 3 % Constants, defined in question = 0.1; % no units 5 Af = 1.4; % m^2 6 Crr = 0.002; % no units 7 mveh = 75; % kg 8 vlow 2; % m/s 9 vhigh 6; % m/s = 6; % no units 11 = 10 GR 12 Tm = 13 14 % Code to find pcttime for all values of varying parameter 15 16 17 % Code to plot solution 요. 18 19 20