How to use if else for terms

I have code to plot Position, Velocity and Torque

clear all; close all; clc;
%% Initialization
S0= 0;
T0 = 0;

%% Parameters
% Davis Equation Parameters
C0 = [7.6658e-3;7.6658e-3;7.6658e-3;7.6658e-3;7.6658e-3;7.6658e-3;7.6658e-3;];

C1 = [1.08e-4;1.08e-4;1.08e-4;1.08e-4;1.08e-4;1.08e-4;1.08e-4;];

C2 = [2.06e-5;2.06e-5;2.06e-5;2.06e-5;2.06e-5;2.06e-5;2.06e-5;];

% Mass Parameters
Mass = [20546.8815192050;20957.5068354343;20964.8885351993;20157.6130816775;20970.5927817606;20957.1669482429;20485.3756487228];

% Another Parameters
Tao = [5;5;5;5;5;5;5;];                                                                                          % Inertial lag of longitudinal dynamics

R = [1.22734407596025;1.24787534177172;1.24824442675996;1.20788065408388;1.24852963908803;1.24785834741215;1.22426878243614];                                                                                                  % Mechanical efficiency of the driveline

u = [205000;220000;235000;250000;265000;280000;302000];

Torque = [2600;2600;2600;2600;2600;2600;2600;];

V0 = 30;                                % Desired Speed
f    = 0.01;                            % rolling friction
Eta  = 0.96;                            % Efficency
g    = 9.8;                             % gravitity 
%% Output Vectors (Void)

S_1 = [];
V_1 = [];
T_1 = [];

S_2=[];
V_2=[];
T_2=[];

S_3=[];
V_3=[];
T_3=[];

S_4=[];
V_4=[];
T_4=[];

S_5=[];
V_5=[];
T_5=[];

S_6=[];
V_6=[];
T_6=[];

S_7=[];
V_7=[];
T_7=[];

%% Discrete Time Model
for k  = 0:100       %%%%%%step definition : 0 to step size %%%%% 
    dt = 100 - k;
    
    S1  = S0  + V0*dt;
    V1  = V0  + (dt/Mass(1))*(Eta*Torque(1)/R(1) - (C0(1) + C1(1)*V0 + C2(1)*V0^2 + Mass(1)*g*f));
    T1  = T0  - (1/Tao(1))*Torque(1)*dt + (1/Tao(1))*u(1)*dt;
   
    S2  = S1  + V1*dt;
    V2  = V1  + (dt/Mass(2))*(Eta*Torque(2)/R(2) - (C0(2) + C1(2)*V1 + C2(2)*V1^2 + Mass(2)*g*f));
    T2  = T1  - (1/Tao(2))*Torque(2)*dt + (1/Tao(2))*u(2)*dt;
    
    S3  = S2  + V2*dt;
    V3  = V2  + (dt/Mass(3))*(Eta*Torque(3)/R(3) - (C0(3) + C1(3)*V2 + C2(3)*V2^2 + Mass(3)*g*f));
    T3  = T2  - (1/Tao(3))*Torque(3)*dt + (1/Tao(3))*u(3)*dt;
   
    S4  = S3  + V3*dt;
    V4  = V3  + (dt/Mass(4))*(Eta*Torque(4)/R(4) - (C0(4) + C1(4)*V3 + C2(4)*V3^2 + Mass(4)*g*f));
    T4  = T3 - (1/Tao(4))*Torque(4)*dt + (1/Tao(4))*u(4)*dt;
    
    S5  = S4  + V4*dt;
    V5  = V4  + (dt/Mass(5))*(Eta*Torque(5)/R(5) - (C0(5) + C1(5)*V4 + C2(5)*V4^2 + Mass(5)*g*f));
    T5  = T4 - (1/Tao(5))*Torque(5)*dt + (1/Tao(5))*u(5)*dt;
    
    S6  = S5  + V5*dt;
    V6  = V5  + (dt/Mass(6))*(Eta*Torque(6)/R(6) - (C0(6) + C1(6)*V5 + C2(6)*V5^2 + Mass(6)*g*f));
    T6  = T5 - (1/Tao(6))*Torque(6)*dt + (1/Tao(6))*u(6)*dt;
    
    S7  = S6  + V6*dt;
    V7  = V6  + (dt/Mass(7))*(Eta*Torque(7)/R(7) - (C0(7) + C1(7)*V6 + C2(7)*V6^2 + Mass(7)*g*f));
    T7  = T6 - (1/Tao(7))*Torque(7)*dt + (1/Tao(7))*u(7)*dt;
    
   S0 = S1;
   T0 = T1;
   V0 = V1;
% Fi_i =[s1;u1;Ti1];

%% Output Vectors

S_1 = [S_1,S1];
V_1 = [V_1,V7];
T_1 = [T_1,T7];

S_2 = [S_2,S2];
V_2 = [V_2,V2];
T_2 = [T_2,T2];

S_3 = [S_3,S3];
V_3 = [V_3,V3];
T_3 = [T_3,T3];

S_4 = [S_4,S4];
V_4 = [V_4,V4];
T_4 = [T_4,T4];

S_5 = [S_5,S5];
V_5 = [V_5,V5];
T_5 = [T_5,T5];

S_6 = [S_6,S6];
V_6 = [V_6,V6];
T_6 = [T_6,T6];

S_7 = [S_7,S7];
V_7 = [V_7,V7];
T_7 = [T_7,T7];

end

%% Plots

figure(1)
plot(S0,'c-','linewidth',1.5),grid;
hold on;
plot(S_1,'m-','linewidth',1.5),grid;
hold on;
plot(S_2,'b-','linewidth',1.5),grid;
hold on;
plot(S_3,'g-','linewidth',1.5),grid;
hold on;
plot(S_4,'m*','linewidth',1.5),grid;
hold on;
plot(S_5,'g*','linewidth',1.5),grid;
hold on;
plot(S_6,'b*','linewidth',1.5),grid;
hold on;
plot(S_7,'m--','linewidth',1.5),grid;
hold on;
h = legend('0','1','2','3','4','5','6','7','Location','SouthEast','interpreter','latex');
set(h,'box','off'); box off;
xlabel('Step Size','interpreter','latex');ylabel('Position (m)','interpreter','latex');
title('Train Position','interpreter','latex')
set(gca,'FontSize',20)
set(gcf,'Position',[0 350 700 1050 1400 1750 2100 ]);

figure(2)
plot(V0,'c-','linewidth',1.5),grid;
hold on;
plot(V_1,'m-','linewidth',1.5),grid;
hold on;
plot(V_2,'b-','linewidth',1.5),grid;
hold on;
plot(V_3,'g-','linewidth',1.5),grid;
hold on;
plot(V_4,'m*','linewidth',1.5),grid;
hold on;
plot(V_5,'g*','linewidth',1.5),grid;
hold on;
plot(V_6,'b*','linewidth',1.5),grid;
hold on;
plot(V_7,'m--','linewidth',1.5),grid;
hold on;
h = legend('0','1','2','3','4','5','6','7','Location','SouthEast','interpreter','latex');
set(h,'box','off'); box off;
xlabel('Step Size','interpreter','latex');ylabel('Speed (m/s)','interpreter','latex');
title('Train Velocity','interpreter','latex')
set(gca,'FontSize',20)

figure(3)
plot(T0,'c-','linewidth',1.5),grid;
hold on;
plot(T_1,'m-','linewidth',1.5),grid;
hold on;
plot(T_2,'b-','linewidth',1.5),grid;
hold on;
plot(T_3,'g-','linewidth',1.5),grid;
hold on;
plot(T_4,'m*','linewidth',1.5),grid;
hold on;
plot(T_5,'g*','linewidth',1.5),grid;
hold on;
plot(T_6,'b*','linewidth',1.5),grid;
hold on;
plot(T_7,'m--','linewidth',1.5),grid;
hold on;
h = legend('0','1','2','3','4','5','6','7','Location','SouthEast','interpreter','latex');
set(h,'box','off'); box off;
xlabel('Step Size ','interpreter','latex');ylabel('Torque (N)','interpreter','latex');
title('Train Torque','interpreter','latex')
set(gca,'FontSize',20)

I want to add if else for terms, like this

if S_1 > 350
    V_2
else V_2 = 0
end

if S_2 > 700
    V_3
else V_3 = 0
end

if S_3 > 1050
    V_4
else V_4 = 0
end
 
if S_4 > 1400
    V_5
else V_5 = 0
end

if S_5 > 1750
    V_6
else V_6 = 0
end

if S_6 > 2100
    V_7
else V_7 = 0
end

is it true?

Answer 1

[Mario Malic]

Hello,

Apart from code which is not friendly to read, here's explanation:

if S_1 > 350 % if S_1 is bigger than 350
    V_2      % show V_2
else V_2 = 0 % set V_2 equal to 0
end

[Ivan Dwi Putra]

S is position

V is velocity

I have 7 Vehicle which is

• S_i is position vehicle - i
• V_i is velocity vehicle - i
• T_i is torque vehicle - i

I want the terms is

• When position vehicle 1 in 350, the vehicle 2 can move but when position vehicle 1 less than 350, the vehicle 2 cannot moving
• When position vehicle 2 in 700, the vehicle 3 can move but when position vehicle 2 less than 700, the vehicle 3 cannot moving
• When position vehicle 3 in 1050, the vehicle 4 can move but when position vehicle 3 less than 1050, the vehicle 4 cannot moving
• When position vehicle 4 in 1400, the vehicle 5 can move but when position vehicle 4 less than 1400, the vehicle 5 cannot moving
• When position vehicle 6 in 1750, the vehicle 7 can move but when position vehicle 6 less than 1750, the vehicle 7 cannot moving