[task_01] Done task_01 (brstu#13)

* The assignment is complete. Create file main.cpp and readme.md, update gitignore

* update folder name

* Delete images and create formuls in task_01 readme.md

* update readme md

* update gitignore

---------

Co-authored-by: Yana Sitkovets <[email protected]>

.gitignore

@@ -33,6 +33,7 @@
 
 # Directories to ignore
 .vs/
+.vscode
 out/
 build/
 

readme.md

@@ -62,7 +62,7 @@
 |10|Игнаткевич Кирилл Сергеевич|||||||||||
 |11|Кашпир Дмитрий Русланович|||||||||||
 |12|Котковец Кирилл Викторович|||||||||||
-|13|Кужир Владислав Витальевич|||||||||||
+|13|Кужир Владислав Витальевич|[as0006313](./trunk/as0006413/)|:white_check_mark:|||||||||
 |14|Немирович Дмитрий Александрович|||||||||||
 |15|Попов Алексей Сергеевич|||||||||||
 |16|Рабченя Максим Юрьевич|||||||||||

trunk/as0006413/task_01/doc/readme.md

@@ -0,0 +1,154 @@
+                        Ministry of Education of the Republic of Belarus
+
+                                        Educational Institution
+
+                                 “Brest State Technical University”
+
+                        Department of Information and Intelligent Technologies
+
+
+
+                                          Laboratory work №1
+
+                        On the discipline “Theory and methods of automatic control”
+
+                                Topic: “Temperature modeling of an object”
+
+
+
+                                                                Performed by:
+
+                                                                Student of the 3rd course
+
+                                                                Group AS-64
+
+                                                                Kuzhyr U. V.
+
+                                                                Supervised by:
+
+                                                                Sitkovets J. S.
+
+
+                                             Brest 2024
+
+
+
+
+## Task:
+
+Let's get some object to be controlled. We want to control its temperature, which can be described by this differential equation:
+
+
+$$
+\Large\frac{dy(\tau)}{d\tau}=\frac{u(\tau)}{C}+\frac{Y_0-y(\tau)}{RC}(1)
+ $$ 
+
+where τ – time; y ( τ ) – input temperature; u ( τ ) – input warm; Y 0 – room temperature; C , R C – some constants.
+
+After transformation we get these linear (2) and nonlinear (3) models:
+
+$$
+\Large y_{\tau+1}=ay_{\tau}+bu_{\tau}(2)
+$$ 
+
+$$
+\Large y_{\tau+1}=ay_{\tau}-by_{\tau-1}^2+cu_{\tau}+d\sin(u_{\tau-1})(3)
+$$
+
+where τ – time discrete moments ( 1 , 2 , 3 … n ); a , b , c , d – some constants.
+
+Task is to write program (С++), which simulates this object temperature.
+Example of program output:
+
+```
+
+Choose an option (0 - exit, 1 - linear model, 2 - nonlinear model): Input choice: 1
+Input A: 12
+Input B: 2
+Input current temperature: 36
+Input heat input: 2
+Input simulation time: 10
+TIME      Linear Model
+=========================
+1         436
+2         5236
+3         62836
+4         754036
+5         9.04844e+06
+6         1.08581e+08
+7         1.30297e+09
+8         1.56357e+10
+9         1.87628e+11
+10        2.25154e+12
+
+Choose an option (0 - exit, 1 - linear model, 2 - nonlinear model): Input choice: 2
+Input A: 3
+Input B: 15
+Input C: 20
+Input D: 25
+Input current temperature: 27
+Input heat input: 37
+Input simulation time: 20
+TIME      Nonlinear Model
+1         804.912
+2         -7796.35
+3         -9.7409e+06
+4         -9.40969e+08
+5         -1.42328e+15
+6         -1.32856e+19
+7         -3.03859e+31
+8         -2.64761e+39
+PS C:\Users\user\Desktop\TMAU-2024\build\trunk\as006417\task_01\src> ./lab_01.exe
+
+Choose an option (0 - exit, 1 - linear model, 2 - nonlinear model): Input choice: 1
+Input A: 1.1
+Input B: 0.5
+Input current temperature: 25
+Input heat input: 10
+Input simulation time: 5
+TIME      Linear Model
+=========================
+1         32.5
+2         40.75
+3         49.825
+4         59.8075
+5         70.7883
+
+Choose an option (0 - exit, 1 - linear model, 2 - nonlinear model): Input choice: 2
+Input A: 1.2
+Input B: 0.1
+Input C: 0.3
+Input D: 0.05
+Input current temperature: 30
+Input heat input: 15
+Input simulation time: 5
+TIME      Nonlinear Model
+=========================
+1         40.5325
+2         -36.8285
+3         -203.95
+4         -375.841
+```
+
+## Input erroe handling
+
+```
+Choose an option (0 - exit, 1 - linear model, 2 - nonlinear model): Input choice: p
+
+*** Incorrect input ***
+Input choice: 5
+*** Invalid input ***
+```
+
+## Exit the program
+```
+Choose an option (0 - exit, 1 - linear model, 2 - nonlinear model): Input choice: 0
+PS C:\Users\user\Desktop\TMAU-2024\build\trunk\as006417\task_01\src> ^C
+```
+
+The source code
+
+The source code is located in the src folder.
+
+    CMakeLists.txt - this is a file that contains CMake commands to control the project build process.
+    main.cpp - source file, contains the main function that controls the program execution.

trunk/as0006413/task_01/src/CMakeLists.txt

@@ -0,0 +1,5 @@
+cmake_minimum_required (VERSION 3.0.0)
+
+project (lab_01)
+
+add_executable(${PROJECT_NAME} main.cpp)

trunk/as0006413/task_01/src/main.cpp

@@ -0,0 +1,92 @@
+#include <iostream>
+#include <cmath>
+#include <map>
+#include <limits>
+
+using namespace std;
+
+void run_linear_model();
+void run_nonlinear_model();
+bool get_choice(int &choice);
+
+void get_input(double &value, const string &prompt) {
+    cout << prompt << ": ";
+    while (!(cin >> value)) {
+        cin.clear();
+        cin.ignore(numeric_limits<streamsize>::max(), '\n');
+        cout << "Invalid input! Try again.\n" << prompt << ": ";
+    }
+}
+
+void get_input(int &value, const string &prompt) {
+    cout << prompt << ": ";
+    while (!(cin >> value)) {
+        cin.clear();
+        cin.ignore(numeric_limits<streamsize>::max(), '\n');
+        cout << "Invalid input! Try again.\n" << prompt << ": ";
+    }
+}
+
+void display_results(const map<int, double> &temps, const string &model_type) {
+    cout << "\n--- " << model_type << " Results ---\n";
+    for (const auto &entry : temps) {
+        cout << "Step " << entry.first << ": Temperature = " << entry.second << endl;
+    }
+}
+
+void run_linear_model() {
+    double A, B, temp, heat;
+    int steps;
+    get_input(A, "Enter coefficient A");
+    get_input(B, "Enter coefficient B");
+    get_input(temp, "Enter initial temperature");
+    get_input(heat, "Enter heat input");
+    get_input(steps, "Enter number of steps");
+
+    map<int, double> temps;
+    for (int i = 1; i <= steps; ++i) {
+        temp = A * temp + B * heat;
+        temps[i] = temp;
+    }
+    display_results(temps, "Linear Model");
+}
+
+void run_nonlinear_model() {
+    double A, B, C, D, temp, heat;
+    int steps;
+    get_input(A, "Enter coefficient A");
+    get_input(B, "Enter coefficient B");
+    get_input(C, "Enter coefficient C");
+    get_input(D, "Enter coefficient D");
+    get_input(temp, "Enter initial temperature");
+    get_input(heat, "Enter heat input");
+    get_input(steps, "Enter number of steps");
+
+    map<int, double> temps;
+    double prev_temp = 0;
+    for (int i = 1; i <= steps; ++i) {
+        double new_temp = A * temp - B * pow(prev_temp, 2) + C * heat + D * sin(heat);
+        prev_temp = temp;
+        temp = new_temp;
+        temps[i] = temp;
+    }
+    display_results(temps, "Nonlinear Model");
+}
+
+bool get_choice(int &choice) {
+    get_input(choice, "Choose option (0 - Exit, 1 - Linear, 2 - Nonlinear)");
+    return choice >= 0 && choice <= 2;
+}
+
+int main() {
+    void (*models[])() = { []() { exit(0); }, run_linear_model, run_nonlinear_model };
+    int choice;
+
+    while (true) {
+        if (!get_choice(choice)) {
+            cout << "Invalid choice! Try again.\n";
+        } else {
+            models[choice]();
+        }
+    }
+}