Modeling of Mobile TMR Mixer Operation

Abstract

A method for determining the duration of the process of preparation and distribution of feed mixtures by a mobile mixer on cattle farms, based on graph theory, is proposed. A generalized state graph of the mobile mixer is presented and its description is given. The final formula for calculating the probability of the mobile mixer being in the state of distribution of a feed mixture consisting of a different number of components is given. To check the method adequacy, time-lapse measurements were performed in production conditions. The projected durability of the mobile mixer was 92.3% (0.36 h) of the actual recorded time of 0.39 h.

Heat Balance of Combined Heat Exchanger Aerodynamic Heating Dryers

“…(𝐿 0 (𝑖 0 (𝑡) + 𝑖 2 (𝑡) − 𝑖 1 (𝑡) − 𝑖 3 (𝑡)) + 𝑞 с.э (𝑡)𝐹 т.п 𝜀 + 𝑘𝐹𝑇 о.с (𝑡))𝑑𝑡 − 𝑘𝐹(𝑎 а 𝑇 2 + 𝑏 а )𝑑𝑡 = 0 (12) For functions i0(t), i1(t), i2(t), i3(t), qc.э(t), Tо.с(t) and T2(t) it is known that: 𝑖 0 (𝑡) = С 𝑐.в 𝑇 о.с (𝑡) + 0,001𝑥 н (𝑟 0 + С п 𝑇 о.с (𝑡)), (13) 𝑖 1 (𝑡) = С 𝑐.в 𝑇 1 (𝑡) + 0,001𝑥 н (𝑟 0 + С п 𝑇 1 (𝑡)), (14) 𝑖 2 (𝑡) = С 𝑐.в 𝑇 2 + 0,001𝑥 к (𝑟 0 + С п 𝑇 2 ), (15) 𝑖 3 (𝑡) = С 𝑐.в 𝑇 3 (𝑡) + 0,001𝑥 к (𝑟 0 + С п 𝑇 3 (𝑡)), (16) where: Сс.в -heat capacity of dry air, kJ/(kg К); xн, xк -correspondingly, initial and final moisture content of the drying agent, g/kg; r0 -specific heat of vaporization at temperature 0 0 С; Cп -heat capacity of vapor, kJ/(kg К); 𝑇 1 -temperature of the drying agent at the inlet to the dryer, К; 𝑇 3 -temperature of the spent drying agent at the outlet of the combined heat exchanger, К.…”

“…Then, taking into account expressions (13)(14)(15)(16)(17)(18)(19), equation (12) will have the form:…”

“…The high cost of traditional energy resources makes it increasingly necessary to use alternative energy sources to reduce energy intensity and increase the efficiency of technical equipment in agricultural production [7][8][9][10][11][12][13][14][15][16][17][18]. Combined types of dryers with different sources of thermal energy are often used [19][20][21][22][23].…”

Development Results of a Cross-Platform Positioning System for a Robotics Feed System at a Dairy Cattle Complex

“…In existing works for dairy cattle complexes, the mobile base moves along a metal belt, along which the mobile robot is oriented by means of inductive sensors. If the robot deviates from the metal belt during its operation, telemetry signals from the inductive sensors recognize the direction of its deviation from the trajectory and send a signal to the robot controller to return it to the correct path [25][26][27].…”