ISSN 2223-4047
Вестник магистратуры. 2022. № 6-3 (129)
19
gbx.eff = 0.85;
% transmissiya f.i.k [-]
%% Shina: 75/16
tire.W = 0.444;
% shinaning eni [m]
tire.D = 0.41 * 0.0254;
%gildirak diameteri [m]
tire.miua = 0.7;
% wheel (tire) friction coefficient [-]
tire.load = 0.9;
% yuklanish coeeficient [-]
%% Avtomobil %%
veh.mass_curb = 4050;
% [kg]
veh.mass_driver = 80;
% [kg]
veh.mass_fm = 1.05;
% mass factor [-]
veh.g = 9.81;
% gravitational acceleration [m/s2]
veh.cd = 0.78;
% suyirlik coefficient [-]
veh.fa = 5;
% old yuza [m2]
veh.ro = 1.202;
% havo zichligi [kg/m3]
road.slope = 0;
% yol qiyalik burchagi [rad]
road.cr = 0.02;
% ishqalanish coefficient [-]
%% To'la yuklangan dvigatel quvvati %%
eng.pwrFullLoad = (1.36/1000)* eng.tqFullLoad .* (eng.NtqFullLoad .* (pi/30));
% [HP]
T0=273;
%
Kelvin
delT=10;
T20=T0+20+delT;
T40=T0+40+delT;
lyamda=T20/T40;
%
gildirak dynamic radius
tire.H = 75*tire.W/100;
% shina balandligi [m]
tire.rws = tire.D/2 + tire.H;
% gildirak static radius [m]
tire.rwd = 0.98 * tire.rws;
% gildirak dynamic radius [m]
%
Avtomobilning umumiy massasi
veh.mass = veh.mass_curb*veh.mass_fm + veh.mass_driver;
% [kg]
%
simulation
dT = 10;
% sample (plot) time [s]
% Dvigatelning statik quvvati va momenti to'la yuklanishda
subplot(1,2,1)
plot(eng.NtqFullLoad,eng.tqFullLoad,
"LineWidth"
, 1)
ha=gca();
xlabel(
"Dvigatel burchak tezligi [rpm]"
,
"FontSize"
,12)
ylabel(
"Dvigatel burovchi momenti [Nm]"
,
"FontSize"
,12)
title(
"Dvigatel burovchi momenti"
)
grid
on
subplot(1,2,2)
plot(eng.NtqFullLoad,eng.pwrFullLoad,
"LineWidth"
, 1)
ha=gca();
xlabel(
"Dvigatel burchak tezligi [rpm]"
,
"FontSize"
,12)
ylabel(
"Dvigatel quvvati [HP]"
,
"FontSize"
,12)
title(
"Dvigatel quvvati"
)
grid
on
Editor faylini ishga tushirish orqali kirish parametrlari Worcspese ish maydoniga yuklanadi. Ushbu
qadam Simulink blok -sxemasini modellashtirishdan oldin bajarilishi kerak, chunki
parametrlar Simulnikning
ba'zi bloklariga yuklanadi[2].
Statik dvigatel quvvati to'la yuklanishda hisoblanadi[5,6].
P
e
=1.36
⋅30
π⋅
N
e
⋅
T
e
(12)
ISSN 2223-4047
Вестник магистратуры. 2022. № 6-3 (129)
20
bu yerda:
P
e
[HP] - to'la yukda dvigatelning statik kuchi
N
e
[rpm] – dvigatel burchak tezligi
T
e
[Nm] - to'liq yukda statik dvigatel momenti
Quyidagi ko'rsatmalaridan foydalanib, dvigatelning statik momentini va quvvatini to'liq yuklanishda,
buchak tezlikning funktsiyasini tuzishimiz mumkin.
Grafik 1. Dvigatel momenti va quvvati (statik) to'liq yuklanganda
Belgilangan barcha parametrlar bilan Matlab/simulnik blok -sxemasini modellashtirishga o'tamiz.
Osonroq tushunish va yaxshiroq o'qilishi uchun Matlab/simulnik modeli 3 asosiy quyi tizimga bo'linadi: model-
lar Dvigatel, transmissiya va avtomobil
[8]
.
Rasm 2. Avtomobilining blok -diagramma modeli
Dvigatel model uchun taqdim etiladi
chiqishi, transmissiyaga moment uzatadi. Bundan tashqari, transmis-
siya modeli g'ildiraklardagi
momentini ishlab chiqaradi, u avtomobil modelga uzatiladi.
Dvigatel model
