Project 2
Matlab Code :-
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Skill-Lync -> Hybrid Drives Development
% Project 1 - Conventional Vehicle Model
% By - Chirag Bapna
% Description:
%% Initialization File
% Initialization file for loading the variables for the Conventional vehicle simulation model
%% Vehicle Parameters
M = 1500; % Vehicle weight [kg]
Cr = 0.015; % Rolling resistance coefficient
Rw = 0.35; % Rolling radius [m]
Cd = 0.33; % Drag coefficient
Af = 2; % Frontal area [m2]
rhoa = 1.225; % Air density [kg/m3]
Vwind = 0; % Wind velocity [kmph]
g = 9.81; % Gravitational acceleration [m/s2]
theta = 0; % Slope [deg]
myu_road_tire = 1; % Coefficient of friction between tire - road interface
%% Powertrain Parameters
FDR = 3.73; % Final Drive Ratio / Diff Ratio
DiffEff = 0.99; % Differential efficiency (assumed independent of operating conditions)
NumGear = 4; % Number of gears in transmission
TransGear = [1:NumGear]; % Transmission Gears
TransRatio = [3.06, 1.62, 1, 0.7]; % Corresponding Transmission ratios
TransEff = 0.90; % Transmission efficiency (assumed independent of operating conditions)
TC_SR = [0, .5, .6, .7, .8, .87, .92, .94, .96, .97, 1]; % Torque Converter Speed Ratio (Matlab default) -> TurbSpd/PumpSpd
TC_TR = [2.232, 1.5462, 1.4058, 1.2746, 1.1528, 1.0732, 1.0192, 1, 1, 1, 1]; % Torque Converter Torque Ratio (Matlab default) -> TurbTrq/PumpTrq
TC_Cf = 1e-4 * [.72558, .66322, .63463, .59042, .51331, .4144, .29287, .22444, .12186, .04386, 0]; % Torque Converter Capacity Factor (Matlab default) -> PumpTrq/PumpSpd^2 [Nm/rpm^2]
load Vehicle_Data/Engine_data_1_9L_Saturn_95kW
load Vehicle_Data/Trans_Shift_map
%% Driver Parameters
Kp = 10; % P gain for driver PI model
Ki = 1; % I gain for driver PI model
Drive_Cycle_Select = 1; % Drive cycle selection
% Drive cycle values in m/s
if Drive_Cycle_Select == 1
load DriveCycles/UDDS;
elseif Drive_Cycle_Select == 2
load DriveCycles/HWFET;
elseif Drive_Cycle_Select == 3
load DriveCycles/FTP;
elseif Drive_Cycle_Select == 4
load DriveCycles/US06;
elseif Drive_Cycle_Select == 5
load DriveCycles/NEDC;
elseif Drive_Cycle_Select == 6
load DriveCycles/WLTP;
end
time_end = cyc_time(end);
vel_end = cyc_vel(end);Vehicle Model
Driver
Controller
Stateflow of controller
Engine control unit
Transmission control unit
Shiftlogic
Threshhold value
Electric motor control unit
Brake control unit
Engine
Electric motor
Crankhub
Transmission
Torque Converter
Differential
Wheel
Vehicle Dynamics
Battery Modelling
Estimated storage system
Terminal voltage
Pack Current
Matlab code:
%% Renaming Variables
Time = out. tout;
ACC_Pdl = out. Acc_Pdl; % Accelerator pedal [%]
Brk_Pdl = out. Brk_Pdl; % Brake pedal [%]
Gear_Cmd = out.Gear_CMD; % Transmission gear
Trans_In_Spd = out. Trans_In_Spd*30/pi; % Transmission input speed [rpm]
Trans_out_Spd - out. TransOutSpd* 30/pi;% Transmission output speed [rpm]
Eng_Trq = out. Eng_Trq; % Engine brake torque [Nm]
Eng_Spd = out. Eng_Spd*30/pi; % Engine speed [rpm]
Eng_Fuel_Consump = out. Eng_Fuel_Consumption; % Engine fuel consumption [g]
Veh_Dist - out. Veh_Dist/1000; % Distance traveled by vehicle [km]
Veh_Spd = out. Veh_Spd 18/5; % Vehicle speed [kmph]
Wheel_Speed = out. WheelSpeed;
% Wheel speed [kmph]
Eng_Fuel_Rate = out. Eng_Fuel_Rate % Engine fuel rate [%]
EM_Speed = out. EMSpd*18/5; % Electric Motor Speed
EM_Power = out. EMPwr; % Electric Motor Power
EM_Torque = out. EMTrq; % Electric Motor Torque
Term_Volt = out. term_volt; % Terminal Voltage of battery
Soc = out.soc; % State Of Charge
Pack_Current = out.Pack_Current; %Pack current of battery
%% Data Analysis
Eng_Pwr = Eng_Spd*pi/30*Eng_Trg/1000; % Engine brake power [kW]
rho_petrol = 0.7197; % Density of petrol [kg/L]
kmpl = Veh_Dist(end)/(Eng_Fuel_Consump(end)/1800/rho_petrol); % Fuel economy [kmpl]
%% Plotting vehicle characteristics time trace to Engine speed, Engine Torque, Engine Power,
% And Engine fuel rate, Engine fuel consumption
% Data conversion from Double Timeseries
Eng_spd - Eng_Spd.Data(:,1); % engine speed
Eng_trq = Eng_Trq.Data(:,1); % engine torque
Eng_pur - Eng_Pwr.Data(:,1); % engine power
Eng_fuel_rate - Eng_Fuel_Rate.Data(:,1); % engine fuel rate
Eng_fuel_consumption - Eng_Fuel_Consump.Data(:,1); % engine fuel consumption
EM_speed = EM_Speed.Data(:,1); % motor speed
EM_power = EM_Power.Data(:,1); % Motor Power
EM_torque = EM_Torque.Data(:,1); % Motor Torque
Pack_current = Pack_Current.Data(:,1); %pack current of battery
State_of_charge = Soc.Data(:,1); %state of charge
Term_voltage = Term_Volt.Data(:,1); % terminal Voltage of battery
%% Plotting vehicle characteristics time trace transmission IN/OUT and Wheel Speed figure(1)
hold on
grid on
plot (Time, Trans_In_Spd, 'linewidth', 1, 'Color', 'black');
plot(Time, Trans_out_Spd, 'linewidth', 1, 'Color', 'red');
plot (Time, Wheel_Speed, 'linewidth',1, 'color', 'blue')
ylabel('Speed [rpm]')
xlabel('Timem [s]'). xlim([0, Time (end)]);
ylim([0, 6000]);
legend('Trans Input', 'Trans Output', 'Wheel Speed');
%% Plotting Engine speed, Engine Torque, Engine Power, Engine fuel rate, Engine fuel consumption wrt Time
figure(2)
subplot(4,1,1)
plot(Time, Eng_tra, 'linewidth',1,'color','black')
xlim([0, Time (end)]);
xlabel('Time [s]')
ylabel('Torque [Nm])
legend('Engine Torque')
grid on
subplot(4,1,2)
plot(Time, Eng_pwr, 'linewidth',1,'color', 'blue')
xlim([0, Time (end)]);
xlabel('Time [s]')
ylabel('Power [KW]')
legend('Engine Power')
grid on
subplot(4,1,3)
plot(Time, Eng_fuel_rate, 'linewidth',1,'color', 'red')
xlim([0, Time (end)]);
xlabel('Time [s]')
ylabel('Fuel Rate [%]')
legend('Engine Fuel Rate')
grid on
subplot(4,1,4)
plot (Time, Eng_fuel_consumption, 'linewidth',1,'color', 'green')
xlim([0, Time (end)]);
xlabel('Time [s]')
ylabel('Fuel Consumption')
legend('Engine Fuel Consumption')
grid on
% Plotting fuel economy Vs Engine Fuel consumption
figure(3)
plot(Eng_fuel_consumption, Eng_fuel_rate, 'color', 'r')
xlabel('Fuel consumption')
ylabel('Fuel Rate [%]')
title('Fuel economy Vs Fuel Consumption')
grid on
%% Potting Accelerator pedal, Brake pedal and gear command with respect to time figure(4)
subplot(2,1,1)
hold on plot(Time, Acc_Pdl, 'linewidth', 1, 'Color', 'black');
plot(Time, Brk_Pdl, 'linewidth', 1, 'Color', 'red');
ylabel('Pedal [%]') xlabel('Time [s]');
xlim([0, Time (end)]); grid on legend('Accel', 'Brake');
title('Acceleration & Brake Pedal wrt Time')
subplot(2,1,2)
plot(Time, Gear_Cmd, 'linewidth', 1, 'Color', 'black');
xlim([0, Time (end)]);
xlabel('Time [s]');
ylabel('Gear');
grid on
title('Gear command wrt Time')
% Plotting gear command vehicle desired with actual speed
figure(5)
subplot(2,1,1)
plot(Veh_spd, Gear_Cmd, 'linewidth', 1, 'Color', 'black');
xlabel('Speed [rpm]');
ylabel('Gear');
grid on
title('Gear command wrt vehicle speed')
subplot(2,1,2)
plot (Veh_dist, Gear_Cmd, 'linewidth', 1, 'Color', 'red');
xlabel('Distance [kmpl]');
ylabel('Gear');
grid on
title('Gear command wrt Distance')
%% Plotting engine operating points on engine fuel map
figure('Name', 'Engine Operating Points');
hold on
grid on
title('Engine Operating Points','fontsize',12);
p1=plot(Eng_map_spd*30/pi, Eng_max_trq, 'linewidth',2,'color', 'r');
p2=line ([Eng_map_spd (end)*30/pi Eng_map_spd(end)*30/pi],[ Eng_max_trg(end)]);
set(p2, 'linewidth', 1, 'linestyle','--','color', 'k');
p3=line ([Eng_map_spd(1)*30/pi Eng_map_spd(1)*30/pi], [ Eng_max_trg(1)]);
set(P3, 'linewidth', 1, 'linestyle','--','color', 'k');
[ch] - contour (Eng_map_spd'*30/pi, Eng_map_tra, Eng_fuel_map');
clabel(ch);
xlabel('Engine Speed [rpm]');
ylabel('Engine Torque [Nm]');
title('Engine Fuel Consumption Map [g/s]');
legend ([p1 p3],{'Max Curve', 'Operating Points'});
axis ([Eng_map_spd (1)*30/pi Eng_map_spd(end)*30/pi 0 Eng_map_trg (end)]);
%% State of charge, Pack Current, And Terminal Voltage with respect to Time
figure(6)
subplot(3,1,1)
plot (Time, Pack_current, 'linewidth',1,'color','black')
xlim ([, Time (end)]); xlabel('Time [s]')
ylabel('Current [W]')
legend('Pack Current')
grid on
subplot(3,1,2)
plot (Time, State_of_charge, 'linewidth',1,'color', 'blue')
xlim([0, Time (end)]);
xlabel('Time [s]')
ylabel('Charging [%]')
legend('State Of Charge)
grid on
subplot(3,1,3)
plot(Time, Term_voltage, 'linewidth',1,'color', 'red')
xlim([@, Time (end)]);
xlabel('Time [s]')
ylabel('Voltage [V]')
legend('Terminal Voltage')
grid on
%% Motor Speed, Torque, Motor input power with respect to Time
figure(7)
subplot(3,1,1)
plot(Time, EM_power, 'linewidth',1,'color', 'black')
xlim([0, Time(end)]); xlabel('Time [s]')
ylabel('Power [W]')
legend('Electric Motor Power ')
grid on
subplot(3,1,2)
plot(Time, EM_torque, 'linewidth',1,'color', 'blue')
xlim([0, Time(end)]);
xlabel('Time [s]')
ylabel(' Torque [Dm]')
legend('Electric Motor Torque')
grid on
subplot(3,1,3)
plot (Time, EM_speed, 'linewidth',1,'color', 'red')
xlim([, Time (end)]);
xlabel('Time [s]')
ylabel('Speed [Rpm]')
legend('Electrical Motor Speed')
grid on
%% Plotting EM Operating Points on motor input power Map
figure('Name', 'Electric Motor Operating Points');
hold on
grid on
title('Electric Motor Operating Points','fontsize', 12);
p1=plot(EM_map_spd*30/pi, EM_max_tra, 'linewidth',2,'color', 'r');
p2=line ([EM_map_spd(end)*30/pi EM_map_spd(end)*30/pi],[EM_max_trq(end)]);
set(p2, 'linewidth', 1, 'linestyle','--','color', 'k');
p3-line ((EM_map_spd (1)*30/pi EM_map_spd (1)*30/pi],[© EM_max_tra(1)]);
set(p3, 'linewidth', 1, 'linestyle','--','color', 'k');
[c, h] = contour(EM_map_spd'*30/pi, EM_map_trq, EM_inpwr_map');
clabel(c,h);
xlabel('Motor Speed [rpm]');
ylabel('Motor Torque [Nm]');
title('Motor Input Power Map [g/s]');
legend ([p1 p3],{'Max Curve', 'Operating Points'});
axis ([EM_map_spd (1)*30/pi EM_map_spd(end)*30/pi EM_map_trg(end)]);UDDS Drive cycle
HWFET Drive cycle
Plot Accelerator, brake pedal & gear command etc.
UDDS
HWFET
Engine fuel map
UDDS
HWFET
Plot motor speed, torque motor,
UDDS
HWFET
Plot pack voltage,current & soc
UDDS
HWFET
Motor input power map,motor max etc
UDDS
HWFET
Fuel economy wrt time
UDDS
HWFET
