scholarly journals Graphical presentation of the power of energy losses and power developed in the elements of hydrostatic drive and control system.: Part II Rotational hydraulic motor speed parallel throttling control and volumetric control systems

2008 ◽  
Vol 15 (4) ◽  
pp. 21-29 ◽  
Author(s):  
Zygmunt Paszota

Graphical presentation of the power of energy losses and power developed in the elements of hydrostatic drive and control system.: Part II Rotational hydraulic motor speed parallel throttling control and volumetric control systems Paper presents graphical interpretation of the power of energy losses in the hydrostatic drive and control system elements and also of the power developed by those elements. An individual system fed by a constant capacity pump, where rotational hydraulic motor speed control is effected by a parallel throttling control system, is analyzed and also a system with the rotational hydraulic motor speed volumetric control by a variable capacity pump, an individual system with a rotational hydraulic motor volumetric speed control by means of a simultaneous change of the pump capacity per one revolution and change of the motor capacity per one revolution, the system operating at the constant pressure in the pump discharge conduit equal to the nominal pressure of the system: pP2 = pn and central system (with situated in parallel and simultaneously operating motors) with volumetric speed control of each rotational hydraulic motor by a motor secondary circuit assembly, the system fed by a pump with variable capacity per one shaft revolution fitted with pressure regulator pP2 = pn.

2008 ◽  
Vol 15 (3) ◽  
pp. 28-37 ◽  
Author(s):  
Zygmunt Paszota

Graphical presentation of the power of energy losses and power developed in the elements of hydrostatic drive and control system: Part I Rotational hydraulic motor speed series throttling control systems Paper proposes and justifies a diagram of the direction of increase of power stream from the shaft or piston rod of a hydraulic motor to the pump shaft, power increasing as an effect of the imposed power of energy losses in the hydrostatic drive and control system elements. Graphical interpretation of the power of energy losses in the hydrostatic drive and control system elements and also of the power developed by those elements is presented. An individual system with the rotational hydraulic motor speed series throttling control fed by a constant capacity pump cooperating with an overflow valve in a constant pressure system p = cte ≈ pn is analyzed and also an individual system with the rotational hydraulic motor speed series throttling control fed by a constant capacity pump cooperating with an overflow valve controlled in a variable pressure system: p = var, an individual system with the rotational hydraulic motor speed series throttling control fed by a variable capacity pump cooperating with a pressure regulator in a constant pressure system p = cte ≈ pn and an individual system with the rotational hydraulic motor speed series throttling control fed by a variable capacity pump cooperating with the Load Sensing regulator in a variable pressure p = var system.


2012 ◽  
Vol 19 (4) ◽  
pp. 44-53 ◽  
Author(s):  
Grzegorz Skorek

ABSTRACT This publication presents, analyses and compares the areas of the power fields of energy losses occurring in the elements of two hydraulic systems with different structures of the hydraulic linear motor speed control.


Author(s):  
Apeksha P. Bansod ◽  
Abhijeet S. Surkar ◽  
Sakshi V. Dhande ◽  
Dr. A.V. Vanalkar

-This study is about Hydraulic Power Pack in hydraulic system Hydraulic drives and controls have become more important due to automation and mechanization. A large number of the advanced and incredible machineries are controlled partly or totally by hydraulics. Hydraulic system is less convoluted and has less moving parts. Today drive and control framework designing is unfathomable without hydraulics. Hydraulic Power Pack gives energy to the activities of the water driven framework, likewise moves the liquid through the framework, gives a protected greatest framework working pressing factor, and furthermore helps with keeping up the liquid temperature and tidiness. Water driven Power Pack is chosen by Pressure range, ostensible force and Size of tank different boundaries.


2015 ◽  
Vol 1 (3) ◽  
pp. 183
Author(s):  
Muhammad Arif Prayudi ◽  
Edy Victor Haryanto Sianturi ◽  
Iwan Fitrianto Rahmad ◽  
Khairul Ummi

Line Follower Robot adalah sebuah robot otomatis yang dapat mengikuti garis yang dibuat dengan menggunakan bahan yang berwarna gelap (hitam) yang didukung oleh rangkain komponen elektronika yang dilengkapi dengan roda dan digerakan oleh motor. Pengendalian kecepatan sangat bergantung pada bata putaran dan pergesekan antara ban robot dengan lantainya. Robot tersebut dirancang untuk bernavigasi dan bergerak secara otomatis mengikuti sebuah alur garis yang dibuat. Untuk membaca garis, robot dilengkapi dengan sensor optik yang diletakkan diujung depan dari robot tersebut. Line Follower Robot ini memiliki jenis dan bentuk serta memiliki beberapa sistem penggerak dan pengendali sebagai pengatur kinerja yang beraneka ragam sesuai dengan kreatifita pembuatnya. Pada perancangan proyek line follower robot kali ini akan dibahas tentang pemisah warna benda dan dianalisi lebih dalam terhadap faktor suatu kecepatan robot dengan gerakan motor yang dikontrol oleh pengendali Prorportional Integral Derivative (PID) sehingga gerakan robot dapat dinamis sesuai dengan track yang akan diujikan.Line Follower Robot is an automated robot that can follow a line that is made using a dark -colored material (black) which is supported by a chain of electronics components are equipped with wheels and is moved by a motor. Speed control is very dependent on the brick and the friction between the tire rotation robot with the floor. The robot is designed to navigate and move automatically in response to a flow line made . To read the line, the robot is equipped with an optical sensor that is placed in front of the tip of the robot. Line Follower Robot has the type and shape and have some drive and control system as a regulator of diverse performance in accordance with the maker's creativity. In designing the project time line follower robot will be discussed on the object color separator and analyzed over a factor in the speed of movement of the robot with a motor that is controlled by the controller Proportional Integral Derivative (PID) so that the robot can move dynamical in accordance with a track that will be tested.


2015 ◽  
Vol 19 (95) ◽  
pp. 50-53
Author(s):  
Aleksej A. Kravcov ◽  
◽  
Leonid G. Limonov ◽  
Valerij V. Sinelnikov ◽  
Stanislav V. Potapov

2012 ◽  
Vol 562-564 ◽  
pp. 1058-1062
Author(s):  
Xi Zhang ◽  
Wen Chao Chen ◽  
Jie Yang ◽  
Liu Hu

The DC motor has good characteristics of large starting torque and good traction and strong overload capacity, traditional battery motor vehicle often adopts DC motor drives as driving system and uses the series resistance to adjust speed. However, in actual coal production, since motor vehicles are often placed in wet, explosive and dusty environment, the speed control system of motor vehicle has strict proof and moisture requirements, however, the inherent characteristics of the DC motor make it a serious shortcoming in the coal mine production, there is an urgent need to improve the structure to meet today's actual demand for coal mine automated production. This article is in this context, to compare the DC motor speed control system with AC speed control system of the mine car, discussing today's mainstream technical programs of AC speed control system, focus on the analysis of the great differences over performance and economic efficiency of the speed control system of mine motor vehicle after adopting AC speed control system.


Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4930
Author(s):  
Francisco Elvis Carvalho Souza ◽  
Werbet Silva ◽  
Andrés Ortiz Salazar ◽  
José Paiva ◽  
Diego Moura ◽  
...  

In order to reduce the costs of implementing the radial position control system of a three-phase bearingless machine with split winding, this article proposes a driving method that uses only two phases of the system instead of the three-phase traditional one. It reduces from six to four the number of inverter legs, drivers, sensors, and current controllers necessary to drive and control the system. To justify the proposal, this new power and control configuration was applied to a 250 W machine controlled by a digital signal processor (DSP). The results obtained demonstrated that it is possible to carry out the radial position control through two phases, without loss of performance in relation to the conventional three-phase drive and control system.


2000 ◽  
Vol 86 (2) ◽  
pp. 99-104
Author(s):  
Shunji FUKUSHIMA ◽  
Satokazu YOSHIDA ◽  
Hisao GOTO ◽  
Chihiro HAYASHI

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