A new control design and robustness analysis of a variable speed hydrostatic transmission used to control the velocity of a hydraulic cylinder

2020 ◽  
Author(s):  
Hasan H. Ali ◽  
Ahmed W. Mustafa ◽  
Fawaz F. Al-Bakri
Keyword(s):  
Robustness Analysis ◽  
Control Design ◽  
Hydraulic Cylinder ◽  
Variable Speed ◽  
Hydrostatic Transmission

scholarly journals IQClab: A new IQC based toolbox for robustness analysis and control design

2021 ◽  
Vol 54 (8) ◽  
pp. 69-74
Author(s):  
Joost Veenman ◽  
Carsten W. Scherer ◽  
Carlos Ardura ◽  
Samir Bennani ◽  
Valentin Preda ◽  
...  
Keyword(s):  
Robustness Analysis ◽  
Control Design ◽  
And Control

Control design for a multi input single output hydraulic cylinder system

2014 ◽  
Vol 47 (3) ◽  
pp. 10946-10951
Author(s):  
Thomas Schwarzgruber ◽  
Thomas Ernst Passenbrunner ◽  
Luigi del Re
Keyword(s):  
Control Design ◽  
Hydraulic Cylinder ◽  
Single Output

scholarly journals Power Control Design for Variable-Speed Wind Turbines

Energies ◽  
2012 ◽  
Vol 5 (8) ◽  
pp. 3033-3050 ◽  
Author(s):  
Yolanda Vidal ◽  
Leonardo Acho ◽  
Ningsu Luo ◽  
Mauricio Zapateiro ◽  
Francesc Pozo
Keyword(s):  
Power Control ◽  
Wind Turbines ◽  
Control Design ◽  
Variable Speed

scholarly journals LPV Control Design for Autonomous Underwater Vehicles Using Robustness Analysis Tools

2019 ◽  
Vol 52 (21) ◽  
pp. 236-241
Author(s):  
Devaprakash Muniraj ◽  
J. Micah Fry ◽  
Mazen Farhood
Keyword(s):  
Autonomous Underwater Vehicles ◽  
Robustness Analysis ◽  
Control Design ◽  
Underwater Vehicles ◽  
Analysis Tools ◽  
Lpv Control

Robust control design of variable speed wind turbine using quantitative feedback theory

2018 ◽  
Vol 232 (6) ◽  
pp. 691-705 ◽  
Author(s):  
Navdeep Singh ◽  
Bhanu Pratap ◽  
Akhilesh Swarup
Keyword(s):  
Robust Control ◽  
Wind Turbine ◽  
Control Design ◽  
Control Technique ◽  
Effective Control ◽  
Quantitative Feedback Theory ◽  
Variable Speed ◽  
Variable Speed Wind Turbine ◽  
Wide Range ◽  
Robust Control Design

A robust control design of a three blade, horizontal axis variable speed wind turbine is developed in this paper. The variable speed wind turbine model consists of higher order nonlinear dynamics where uncertainty has been considered in the plant parameters. Quantitative feedback theory is an effective and efficient, robust control technique through which the desired specifications over a specified range of parametric uncertainty can easily be achieved in the frequency domain. The proposed robust torque and pitch control in variable speed wind turbine using quantitative feedback theory satisfy prescribed gain and phase margin, degree of tracking for the robust performance, fast convergence, noise attenuation, and input and output disturbance rejection. The advantages of the proposed robust control design are the consideration of a wide range of performance specifications and achieving effective control over an increased operating frequency range. The simulation results demonstrate the satisfactory performance of proposed quantitative feedback theory-based controller and prefilter which fulfill the necessary conditions such as robust stability and robust tracking. Further, it has been shown that the performance of the quantitative feedback theory-based controller is better than the performance with a standard wind turbine controller and also from the performance by proportional-integral controller.

scholarly journals Classification and Review of Pump-Controlled Differential Cylinder Drives

Energies ◽  
2019 ◽  
Vol 12 (7) ◽  
pp. 1293 ◽  
Author(s):  
Søren Ketelsen ◽  
Damiano Padovani ◽  
Torben Andersen ◽  
Morten Ebbesen ◽  
Lasse Schmidt
Keyword(s):  
Small Volume ◽  
Hydraulic Cylinder ◽  
Future Research ◽  
Hydraulic Systems ◽  
Hydraulic Circuit ◽  
Variable Speed ◽  
Electric Drives ◽  
Variable Displacement ◽  
Oil Tank ◽  
Pump Controlled Cylinder

Pump-controlled hydraulic cylinder drives may offer improved energy efficiency, compactness, and plug-and-play installation compared to conventional valve-controlled hydraulic systems and thus have the potential of replacing conventional hydraulic systems as well as electro-mechanical alternatives. Since the late 1980s, research into how to configure the hydraulic circuit of pump-controlled cylinder drives has been ongoing, especially in terms of compensating the uneven flow requirements required by a differential cylinder. Recently, research has also focused on other aspects such as replacing a vented oil tank with a small-volume pressurized accumulator including the consequences of this in terms of thermal behavior. Numerous references describe the advantages and shortcomings of pump-controlled cylinder drives compared to conventional hydraulic systems or electro-mechanical drives. This paper presents a throughout literature review starting from the earliest concepts based on variable-displacement hydraulic pumps and vented reservoirs to newer concepts based on variable-speed electric drives and sealed reservoirs. By classifying these drives into several proposed classes it is found that the architectures considered in the literature reduce to a few basic layouts. Finally, the paper compares the advantages and shortcomings of each drive class and seek to predict future research tasks related to pump-controlled cylinder drives.

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