Journal articles: 'Hydraulic control system'

1

Ito, Masanori, and Hiroshi Sato. "DDV Control Hydraulic Steering System." JOURNAL OF THE MARINE ENGINEERING SOCIETY IN JAPAN 34, no. 3 (1999): 210–14. http://dx.doi.org/10.5988/jime1966.34.210.

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Xu, Hong. "PNEUMO-HYDRAULIC SYSTEM AND THE PNEUMATIC HYDRAULIC COMBINATION CONTROL (PHCC) SYSTEM." Chinese Journal of Mechanical Engineering 37, no. 07 (2001): 92. http://dx.doi.org/10.3901/jme.2001.07.092.

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YU, Zhuoping. "Robustness Hydraulic Pressure Control System of Integrated-electro-hydraulic Brake System." Journal of Mechanical Engineering 51, no. 16 (2015): 22. http://dx.doi.org/10.3901/jme.2015.16.022.

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Zakharov, Viacheslav, and Tatiana Minav. "Analysis of Field Oriented Control of Permanent Magnet Synchronous Motor for a Valveless Pump-Controlled Actuator." Proceedings 64, no. 1 (November 20, 2020): 19. http://dx.doi.org/10.3390/iecat2020-08491.

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Earlier research demonstrated that a pump-controlled hydraulic system combines the best properties of traditional hydraulics and electric intelligence. Thus, the new system has been proposed as a replacement for conventional valve-controlled systems, to improve the energy efficiency in non-road mobile machinery in particular. One of the pump-controlled systems can be realized via direct control of hydraulic pump/motor by varying speed of prime mover. Electric motor (EM) as a prime mover attract with higher efficiency (more than 90%) and a wide range of speed regulation. These advantages allow to improve the system efficiency and decrease the energy consumption in electric and hybrid non-road mobile machinery. Further EM's efficiency improvement can be achieved by using vector control systems, which provide rotor magnetic flux control proportionally to the shaft's speed. Considering all vector control’s benefits (high accuracy of speed control, smooth~start and smooth rotation of the motor in the entire frequency range, quick response to load changes, increased control range and accuracy of regulation), the electro-hydraulic systems and influence of electric part on hydraulic one is not investigated widely. Therefore, in this paper Field Oriented Control (FOC) is analyzed as One of the most perspective vector control systems for electro-hydraulic actuator application with a Permanent Magnet Synchronous Machine (PMSM) as a prime mover. In~this study, Direct-driven hydraulics (DDH) was considered as a study case. A detailed model of the PMSM control system with DDH was built in MATLAB/Simulink. The behavior of the DDH system was investigated by transient processes analysis of EM, pump, and cylinder in the normal and failure modes. The system demonstrates a difference between reference and simulated speed about 0.33% and 11.75% of average torque fluctuations. The behavior of the system in failure mode demonstrated multiple excesses of rated parameters.

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Zhang, Li. "Analysis of Construction Machinery Hydraulic Control System." Applied Mechanics and Materials 401-403 (September 2013): 1590–95. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.1590.

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This article analyses the use requirement of construction machinery, introduce the main features of typical construction machinery hydraulic system, derived power control modes of hydraulic system form hydraulic power form, compares the advantages and disadvantages of each power control mode, gives the optimization solutions, at last, sum up the full text of the construction machinery hydraulic power and control modes and prospect of the hydraulic system to precision control.

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Dai, Li, Yao Wu, Jian Wang, Yun Gong Li, and Yu Liu. "Modeling and Control of Flexible Hydraulic Robotic Arm." Advanced Engineering Forum 2-3 (December 2011): 334–39. http://dx.doi.org/10.4028/www.scientific.net/aef.2-3.334.

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Flexible hydraulic robotic arm is a complicated system which coupled by mechanics and hydraulics. It is widely applied in all kinds of large engineering equipments, such as concrete pump truck, bridge monitor truck, arm frame of crane, etc. The arm system of the hydraulic robotic arm is a multi-body system with redundant freedom, strong nonlinear, coupled with rigid and flexible characters. So it is of great theoretic value and real engineering significance to study the arm system of the robotic arm. In this theme, the movement of flexible hydraulic robotic arm and hydraulic cylinders are seperately analyzed with flexible multi-body dynamics, and the mechanical hydraulic dynamic model of the driving system and the arm system is built with Lagrange Equation and Virtual Work Theory. And the dynamic differential equation is built with the driving force of the hydraulic cylinder as the main force. With the track programming and the optimization method, the dynamic converse problem of the arm end track is researched, so as to get the optimized rotation angle when the arm end reaches the expected point. By using the PD control theory, without decoupling and rank-decreasing, only with feed back from the hydraulic system to realize the close loop control of the arm end position, pose and movement, the relationship between the hydraulic system and the end position & pose is studied, so that the flexible distortion is reduced and the libration is restrained. What’s more, the simulation model of the mechanical arms is built by the dynamic simulation software. The simulation result prove that the movement equation built by this way can clearly describe each dynamic character of the mechanical arms.

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Haga, Masakazu, Watanabe Hiroshi, and Kazuo Fujishima. "Digging control system for hydraulic excavator." Mechatronics 11, no. 6 (September 2001): 665–76. http://dx.doi.org/10.1016/s0957-4158(00)00043-x.

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Liu, He-ping, A.-ni Luo, and Hai-yan Xiao. "Underwater hydraulic shock shovel control system." Journal of Marine Science and Application 7, no. 2 (May 30, 2008): 139–42. http://dx.doi.org/10.1007/s11804-008-6046-0.

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Zhang, Zhu Xin, and Tuo Jia. "Direct-Drive Differential Volume Control Electro-Hydraulic Servo Control System." Applied Mechanics and Materials 433-435 (October 2013): 991–94. http://dx.doi.org/10.4028/www.scientific.net/amm.433-435.991.

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Direct-drive volume control electro-hydraulic servo control system, derivation model of single-rod hydraulic cylinder system, pointed out that when the reciprocating motion characteristics are inconsistent. In order to solve this problem, proposed direct-drive differential volume control electro-hydraulic servo system design of its control system and analysis of system models. Through theoretical analysis, validate this proposed direct-drive bad dynamic volume control system, symmetric dynamic performance, improving control system reliability.

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He, Xi Guang, Ji Feng Xing, and Jia Chen. "Permanent-Pressure Control Tactic of Rudder Based on Fuzzy-Control Theorem." Applied Mechanics and Materials 192 (July 2012): 360–64. http://dx.doi.org/10.4028/www.scientific.net/amm.192.360.

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In order to guarantee that the rudder hydraulic systems work normally, the rudder hydraulic system must supply constant-pressure fluid to it. In this article, the author had analyzed the relationship between the power of the hydraulic oil pump and its motor revs, and done researches on its controlling tactics. Next, the author deigned its controller and controlling system based on fuzzy-control theorem. This system could extend the life-span of the pump motor and save energy, and it can also be utilized in other engineering fields.

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Wei, Guo, and Li Ji. "Bracket Electro-Hydraulic Control System Based on PLC Hydraulic Research." Advanced Materials Research 1049-1050 (October 2014): 1042–47. http://dx.doi.org/10.4028/www.scientific.net/amr.1049-1050.1042.

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Adopt a PLC controller as the core and combined hydraulic supports CAN bus technology to build electro-hydraulic control system, the composition and working principle of hydraulic support electro-hydraulic control system will be described; according to the control system control requirements to achieve a single frame single action moving, single rack sequential linkage, group exercise, shearer position detection and the overall program design, while the stent control system software and hardware design. Verification shows that the system is able to achieve its basic functions. Reference to automate the development of the growing coal mine hydraulic support electro-hydraulic control system.

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Liang, Jie, Zhi Guang Guan, and Zi Qiang Lv. "Research on Profiling Electro-Hydraulic Control System of Hydraulic Excavator." Applied Mechanics and Materials 401-403 (September 2013): 1707–10. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.1707.

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Hydraulic excavator is the important construction machinery. In order to realize the excavator robot intelligent control system from the research on operator's comfort and maneuverability, the paper introduces the establishment of the bucket action model. And at the base of the model, the hardware and software are designed. The experiment shows that the system has the advantage of stability, reliability and strong anti-interference ability.

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YU, Zhuoping. "Review on Hydraulic Pressure Control of Electro-hydraulic Brake System." Journal of Mechanical Engineering 53, no. 14 (2017): 1. http://dx.doi.org/10.3901/jme.2017.14.001.

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Xu, Ping, and Jian Gang Yi. "Design of Hydraulic Descaling Computer Control System." Applied Mechanics and Materials 608-609 (October 2014): 19–22. http://dx.doi.org/10.4028/www.scientific.net/amm.608-609.19.

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Hydraulic descaling system is the key device to ensure the surface quality of billet. However, traditional control methods lead to the stability problem in hydraulic descaling system. To solve the problem, the construction of the hydraulic descaling computer control system is studied, the working principle of the system is analyzed, and the high pressure water bench of hydraulic descaling is designed. Based on it, the corresponding computer control software is developed. The application shows that the designed system is stable in practice, which is helpful for enterprise production.

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Zhou, Yi Jun, and Jun Xu. "Design and Characteristic Analysis of Variable Speed Hydraulic System." Advanced Materials Research 591-593 (November 2012): 179–82. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.179.

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The motor variable frequency speed control technology applied to the traditional hydraulic system based on variable speed hydraulic transmission principle with The PLC technology, hydraulic control, detection technology and configuration of organic, it combine PLC as the core of the lower machine control components, PC as the control, researched the variable speed hydraulic test system hardware, software and control systems design. The experiments were performed, realized the variable speed hydraulic experimental platform for open loop control and variable speed hydraulic system parameters real-time monitoring and dynamic display. It overcomes some of the shortcomings of the conventional hydraulic system, improved the efficiency, the hydraulic system run more smoothly and reduce noise. The experiments show that the variable speed hydraulic test bench run well and achieve the purpose.

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Ranade, Eeshan. "Electronic Control System for Steer by Wire." International Journal for Research in Applied Science and Engineering Technology 9, no. VI (June 30, 2021): 4161–66. http://dx.doi.org/10.22214/ijraset.2021.35968.

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Automobile industry’s focus is on efficiency, safety and performance has resulted in the rapid introduction of electronics in vehicle safety systems and engine management. Mechanical and Hydraulic systems are now gradually being replaced by electronic controllers to achieve the objectives of optimizing power consumption, improving driver convenience, and maximizing driver safety resulting in an overall improved performance and experience. Vehicle steering systems have transitioned from mechanical to hydraulic power to an electric power assisted steering system and now to the state of the art, Steer by Wire (SbW) system. Traditional mechanical systems included a steering wheel, column, gear, rack and pinion and did not support any power steering. The next generation hydraulic systems were more stable, safer and required comparatively lesser effort. Electric or DC motors drove the Electric Power System addressing the drawbacks of the hydraulic systems especially those related to environment and acoustics with the added advantage of a compact structure and power-on-demand engine performance. By-wire steering technologies was originally introduced in the Concord aircraft in 1970s. The SbW is a steering system with no steering column. The mechanical interface between the steering wheel and the wheels is replaced with by-wire electrical connection/electronic actuators. SbW system has significant advantages in terms of driving safety due to the availability of the steering command in electronic form and the removal of the steering shaft, cruising comfort with driving manoeuvring due to no space constraint and favourable to the environment with the non-usage of hydraulic oils.

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Chiang, Mao Hsiung, Chung Chieh Cheng, Liang Wang Lee, Maoh Chin Jiang, and Jhih Hong Lin. "Signed-Distance Fuzzy Sliding Mode Position Control for an Energy-Saving Electro-Hydraulic Control System." Applied Mechanics and Materials 284-287 (January 2013): 2315–19. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2315.

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Electro-Hydraulic pump-controlled servo systems that have high energy-efficiency can serve as energy-saving system. This paper aims to investigate the servo performance of the electro-hydraulic pump-controlled systems driven by an AC servo motor with variable rotational speed. A constant displacement axial piston pump is used in this research. Thus, the new hydraulic pump-controlled system with an AC motor servo and a constant displacement axial piston pump is investigated for position control of hydraulic servo machines. For that, this paper also develops the control strategy, sign-distance fuzzy sliding mode control, which can simplify the fuzzy rule base through the sliding surface. The developed high response variable rotational speed pump-controlled systems controlled by SD-FSMC are implemented and verified experimentally for positioning control in different stroke and loading conditions.

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Wei, Xiao Hua, and Miao Xie. "Dynamic Characteristic Analysis on Hydraulic Control System for Cutting System of Longitudinal Roadheaders." Advanced Materials Research 619 (December 2012): 467–71. http://dx.doi.org/10.4028/www.scientific.net/amr.619.467.

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Dynamic characteristics of the hydraulic control system for the cutting system of roadheaders are very important for analyzing the working performance. This paper supplies the modularization design method for hydraulic control system of cutting system of roadheaders. It utilizes the Matlab/Simulink to establish the mathematical model for each hydraulic components of the cutting system. And the hydraulic control system model is simulated by Matlab/Simulink. It’s useful for predicting and optimize the dynamic response of the hydraulic control system.

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Sekhavat, P., Q. Wu, and N. Sepehri. "Impact Control in Hydraulic Actuators." Journal of Dynamic Systems, Measurement, and Control 127, no. 2 (October 25, 2004): 197–205. http://dx.doi.org/10.1115/1.1898231.

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Every manipulator contact task that begins with a transition from free motion to constraint motion may exhibit impacts that could drive the system unstable. Stabilization of manipulators during this transition is, therefore, an important issue in contact task control design. This paper presents a discontinuous controller to regulate the transition mode in hydraulic actuators. The controller, upon sensing a nonzero force, positions the actuator at the location where the force was sensed, thus, exerting minimal force on a nonmoving environment. The scheme does not require force or velocity feedback as they are difficult to measure throughout the short transition phase. Also, no knowledge about the environment or hydraulic parameters is required for control action. Due to the discontinuity of the control law, the control system is nonsmooth. First, the existence, continuation and uniqueness of Filippov’s solution to the system are proven. Next, the extension of Lyapunov stability theory to nonsmooth systems is employed to guarantee the global asymptotic convergence of the entire system’s state towards the equilibrium point. Complete dynamic characteristics of hydraulic functions and Hertz-type contact model are included in the stability analysis. Experiments are conducted to verify the practicality and effectiveness of the proposed controller. They include actuator collisions with hard and soft environments and with various approach velocities.

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Zhao, Hong Lin, Jia Yu, Yuan Long Yue, Song Li, and Bu Quan Guo. "Design of Hydraulic System of Subsea X-Tree." Applied Mechanics and Materials 155-156 (February 2012): 540–44. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.540.

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Onshore hydraulic systems are not generally applied in subsea production control system,so how to design a special needed hydraulic system for subsea X-tree has been one of the hot research questions.Several specific hydraulic components were analyzed, such as hydraulic power unite,umbilical,subsea control model,hydraulic control valve and valve actuator, and then corresponding hydraulic schematic which can meet the requirements of subsea X-tree is presented.

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Shen, Gang, Zhencai Zhu, Yu Tang, Lei Zhang, Guangda Liu, Jinsong Zhao, Chifu Yang, and Junwei Han. "Combined control strategy using internal model control and adaptive inverse control for electro-hydraulic shaking table." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 227, no. 10 (December 21, 2012): 2348–60. http://dx.doi.org/10.1177/0954406212472131.

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An electro-hydraulic shaking table is a useful experimental apparatus to real-time replicate the desired acceleration signal for evaluating the performance of the tested structural systems. The article proposes a combined control strategy to improve the tracking accuracy of the electro-hydraulic shaking table. First, the combined control strategy utilizes an adaptive inverse control as a feedforward controller for extending the acceleration frequency bandwidth of the electro-hydraulic shaking table when the estimated plant model may be a nonminimum phase system and its inverse model is an unstable system. The adaptive inverse control feedforward compensator guarantees the stability of the estimated inverse transfer function. Then, the combined control strategy employs an improved internal model control for obtaining high fidelity tracking accuracy after the modeling error between the estimated inverse transfer function using adaptive inverse control and the electro-hydraulic shaking table actual inverse system is improved by the improved internal model control. So, the proposed control strategy combines the merits of adaptive inverse control feedforward compensator and improved internal model control. The combined strategy is programmed in MATLAB/Simulink, and then is compiled to a real-time PC system with xPC target technology for implementation. The experimental results demonstrate that a better tracking performance with the proposed combined control strategy is achieved in an electro-hydraulic shaking table than with a conventional controller.

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Hu, Chun Hua, Chao Wen, and Wen Ming Mei. "Synchronous Control Technology Research of Hydraulic Lifting System." Applied Mechanics and Materials 263-266 (December 2012): 762–67. http://dx.doi.org/10.4028/www.scientific.net/amm.263-266.762.

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In conventional “flow control valve and travel switch” control strategy, relative height difference between multiple cylinders only reach accuracy of centimetre grade, which can’t meet synchronous control accuracy requirements of many engineering. In order to improve multiple cylinders synchronous accuracy of the hydraulic lifting system, this paper takes a hydraulic lifting system as basis, which studies PID closed loop control system using electro-hydraulic proportional valve and high-precision displacement accuracy sensor, and the synchronous accuracy of 4 cylinders hydraulic lifting system is improved to millimetre grade.

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Li, Yao, and Jian Gang Yi. "Research on Hydraulic Components Test System Based on Proportional Control Technology." Advanced Materials Research 912-914 (April 2014): 744–47. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.744.

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Proportional control technology is widely used in many hydraulic systems. In order to measure the characteristics of hydraulic components, it is necessary to establish hydraulic components test system based on proportional control technology. In this paper, the test contents of hydraulic components are analyzed, the performance testing system is designed, the system construction is presented, and the computer test software is developed. The application results showed that the developed system has good value, which can not only be used directly in enterprise to solve the production problem, but also improve the utilization and reliability of hydraulic components.

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Liu, Hong Yu. "Hydraulic Support Model Test Load Equipment and its Hydraulic Control System." Advanced Materials Research 189-193 (February 2011): 4455–58. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.4455.

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Hydraulic support is an important equipment of mechanization caving coal in modernization coal mine. Hydraulic support strength test is a key link in hydraulic support design. Based on the similarity theory, the displacement, stress and strain information of test measured from hydraulic support model test can be popularized to hydraulic support prototype. This has an important significance on successful pass in prototype hydraulic support strength test and quicker and better designing eligible hydraulic support. The construction of load equipment and hydraulic control system of hydraulic support model test provides a practical and convenient research way of hydraulic support model test.

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Wang, Yu, Bao Lin Liu, and Yuan Biao Hu. "Design and Analysis of Hydraulic Control System for Pipe Storage and Handling System." Key Engineering Materials 480-481 (June 2011): 1240–45. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.1240.

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This paper research the hydraulic control system of pipe storage and handling system. The pipe storage and handling system (PSHS) is the key parts on rig to handle the drilling pipe and it can improve the efficiency during the drilling works. The hydraulic system of pipe storage and handling system have designed according to automatic round-trip operation in drilling engineering. The mathematical modeling of hydraulic components in PSHS have established and analyzed. The simulation model of hydraulic system of PSHS is also built and simulated to analysis the characteristics of reversal valve operation, Hydraulic pressure adjusting operation, piston speed control and state of accumulator based on the AMESim. The results prove that the operations of pipe storage and handle such as pipe storage, pipe clamping, pipe lifting, pipe transfer and pipe joint can be accomplished drive by hydraulic system. Meanwhile, AMESim have great views to research the geosciences equipment.

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Shen, Wei, Jihai Jiang, Hamid Reza Karimi, and Xiaoyu Su. "Observer-Based Robust Control for Hydraulic Velocity Control System." Mathematical Problems in Engineering 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/689132.

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This paper investigates the problems of robust stabilization and robust control for the secondary component speed control system with parameters uncertainty and load disturbance. The aim is to enhance the control performance of hydraulic system based on Common Pressure Rail (CPR). Firstly, a mathematical model is presented to describe the hydraulic control system. Then a novel observer is proposed, and an observed-based control strategy is designed such that the closed-loop system is asymptotically stable and satisfies the disturbance attenuation level. The condition for the existence of the developed controller can by efficiently solved by using the MATLAB software. Finally, simulation results are provided to demonstrate the effectiveness of the proposed method.

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He, Ji Li. "Research on Hydraulic and Control System of Manipulator." Advanced Materials Research 482-484 (February 2012): 1350–53. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.1350.

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The industrial manipulator has been introduced. The manipulator of cylindrical coordinate type provides with three degrees of freedom including rotation, lifting and expansion, which has corresponding rotation structure, lifting structure, expansion structure. All parts are drove and controlled by using hydraulic cylinder. FluidSIM-H is hydraulic simulation software and tightly integrated the CAD function and simulation function. To simulate and analyze the operation of hydraulic circuit which based on the physical model of hydraulic element and LOGO control. The results showed that the industrial manipulator can work reliably.

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Gao, Tian Xiang, Qiang Gao, and Yan Li. "Hydraulic Leveling Technology for Electro-Hydraulic Proportional Control Based on Fuzzy PID." Applied Mechanics and Materials 551 (May 2014): 503–8. http://dx.doi.org/10.4028/www.scientific.net/amm.551.503.

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In modern military and civil technologies, platforms with equipment on them are often needed to be adjusted to horizontal position rapidly and precisely and keep the platforms stable at the same time. Most leveling systems are implemented with hydraulic system, and they are time-variant nonlinear systems. To leveling both rapidly and steadily with required precision, a PID control strategy based on fuzzy theory was proposed. Electro-hydraulic proportional valve control hydraulic system model was created and analyzed, transfer function of hydraulic legs was obtained and fuzzy PID controller was created in this paper. The proposed method is simulated in Simulink. The simulation result shows that fuzzy PID controller can adjust the platform to horizontal position rapidly and steadily, and improve system performance.

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Guo, Ying-Qing, Xiu-Mei Zha, Yao-Yu Shen, Yi-Na Wang, and Gang Chen. "Research on PID Position Control of a Hydraulic Servo System Based on Kalman Genetic Optimization." Actuators 11, no. 6 (June 15, 2022): 162. http://dx.doi.org/10.3390/act11060162.

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With the wide application of hydraulic servo technology in control systems, the requirement of hydraulic servo position control performance is greater and greater. In order to solve the problems of slow response, poor precision, and weak anti-interference ability in hydraulic servo position controls, a Kalman genetic optimization PID controller is designed. Firstly, aiming at the nonlinear problems such as internal leakage and oil compressibility in the hydraulic servo system, the mathematical model of the hydraulic servo system is established. By analyzing the working characteristics of the servo valve and hydraulic cylinder in the hydraulic servo system, the parameters in the mathematical model are determined. Secondly, a genetic algorithm is used to search the optimal proportional integral differential (PID) controller gain of the hydraulic servo system to realize the accurate control of valve-controlled hydraulic cylinder displacement in the hydraulic servo system. Under the positioning benchmark of step signal and sine wave signal, the PID algorithm and the genetic optimized PID algorithm are compared in the system simulation model established by Simulink. Finally, to solve the amplitude fluctuations caused by the GA optimized PID and reduce the influence of external disturbances, a Kalman filtering algorithm is added to the hydraulic servo system to reduce the amplitude fluctuations and the influence of external disturbances on the system. The simulation results show that the designed Kalman genetic optimization PID controller can be better applied to the position control of the hydraulic servo system. Compared with the traditional PID control algorithm, the PID algorithm optimized by genetic algorithm improves the system’s response speed and control accuracy; the Kalman filter is a good solution for the amplitude fluctuations caused by GA-optimized PID that reduces the influence of external disturbances on the hydraulic servo system.

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Zhao, Ya Nan, Hong Wang Du, Yu Mei Li, Xiang Luo, and Gang Liu. "Impact of Long Hydraulic Pipeline upon Performance of Hydraulic Control System." Advanced Materials Research 328-330 (September 2011): 2148–51. http://dx.doi.org/10.4028/www.scientific.net/amr.328-330.2148.

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In ocean exploitation, long hydraulic pipelines are usually applied. Using SimHydraulic software, the model of hydraulic system including hydraulic fluid, pump, hydraulic cylinder, directional control valve, relief valve, accumulator, long supply pipeline and return pipeline, is established. The position of the cylinder piston is measured by position sensor, while the supply pressure of the cylinder and the system supply pressure are measured by pressure sensors, the directional control valve is controlled by an on-off signal. The simulation was carried out, the impact of long hydraulic pipeline on system performance is also analyzed.

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Chen, Jin Song, and Wen Bo Cheng. "Linear Analysis of Hydraulic Control System of an Electric-Hydraulic Proportion." Advanced Materials Research 898 (February 2014): 582–85. http://dx.doi.org/10.4028/www.scientific.net/amr.898.582.

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1780 mm hot rolling transport chain electro-hydraulic proportional hydraulic control system of Shanghai Meishan Iron and Steel Co., LTD. Of Baosteel is taken as an example in this paper. The features, the controlling method, the electro-hydraulic proportional directional valve selection and the decision of the specific circuits of this kind of metallurgical equipment are introduced in this paper.

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Abdillah, Abdul Azis. "OPTIMIZATION OF THE HYDRAULIC SYSTEM IN THE EXCAVATOR ARM SIMULATOR." Jurnal Poli-Teknologi 20, no. 2 (December 19, 2021): 145–51. http://dx.doi.org/10.32722/pt.v20i2.3304.

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Most of the heavy equipment units use a hydraulic system, even including systems that are essential for working with a heavy equipment unit. The hydraulic system is a system that utilizes a liquid medium in the form of fluid or oil to generate pressure, which is used to implement, the power train system, the disconnection system, the steering system. The working principle of hydraulics is to utilize the pressure exerted on the tool (which is used for this actuator / cylinder / tube) so that the pressure pushes the piston which is connected to the rod. The hydraulic system in this study is an arm excavator. This simulator is like a hydraulic system in general which consists of a power unit, in this simulator the power unit used is a type of electric motor that is connected to a hydraulic pump. The control unit is in the form of a control valve. The drive unit is an actuator / cylinder / tube. This simulator has been disabled for a long time due to a malfunction. Then the authors performed a simple analysis and improvements to the excavator arm simulator. So the research that is done is to do the 8 step troubleshooting method on the simulator. This step aims to facilitate the repair process in the simulator.

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Pshinko, O. M., A. V. Krasnyuk, and O. V. Hromova. "HYDRAULIC CONCRETE COMPOSITION AND PROPERTIES CONTROL SYSTEM." Science and Transport Progress. Bulletin of Dnipropetrovsk National University of Railway Transport, no. 5(59) (October 29, 2015): 195–204. http://dx.doi.org/10.15802/stp2015/52289.

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SASAKI, YOSHINARI, KENICHI MIKI, and MASAAKI SUHARA. "Application of digital electro-hydraulic control system." Proceedings of the JFPS International Symposium on Fluid Power 1993, no. 2 (1993): 285–90. http://dx.doi.org/10.5739/isfp.1993.285.

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MATSUI, Takashi, and Hidetoshi KOSEKI. "MOTION CONTROL OF WATER-HYDRAULIC SERVO SYSTEM." Proceedings of the JFPS International Symposium on Fluid Power 1996, no. 3 (1996): 61–66. http://dx.doi.org/10.5739/isfp.1996.61.

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TERASAKA, Dai, Kazuhisa ITO, and Shigeru IKEO. "PID-CONTROL OF WATER HYDRAULIC SERVOMOTOR SYSTEM." Proceedings of the JFPS International Symposium on Fluid Power 2002, no. 5-1 (2002): 143–48. http://dx.doi.org/10.5739/isfp.2002.143.

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Kittisares, Sarin, Yosiharu Hirota, Hiroyuki Nabae, Gen Endo, and Koichi Suzumori. "Alternating pressure control system for hydraulic robots." Mechatronics 85 (August 2022): 102822. http://dx.doi.org/10.1016/j.mechatronics.2022.102822.

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Dursun, Ufuk, Fatma Yıldız Taşçıkaraoğlu, and İlker Üstoğlu. "Model Predictive Control of Hydraulic Test System." Pamukkale University Journal of Engineering Sciences 24, no. 8 (2018): 1443–49. http://dx.doi.org/10.5505/pajes.2018.81236.

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Lee, S. S., J. H. Mun, W. Y. Park, C. H. Lee, K. S. Lee, and H. Hwang. "Hydraulic Level Control System of Combine Body." Journal of Biosystems Engineering 29, no. 5 (October 1, 2004): 425–32. http://dx.doi.org/10.5307/jbe.2004.29.5.425.

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Matsuura, T., N. Shigematsu, K. Nakashima, and K. Moribe. "Hydraulic screwdown control system for mandrel mill." IEEE Transactions on Industry Applications 30, no. 3 (1994): 568–72. http://dx.doi.org/10.1109/28.293700.

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Zhang, Fei. "ADAPTATION COMPENSATION OF HYDRAULIC SERVO CONTROL SYSTEM." Chinese Journal of Mechanical Engineering 41, no. 05 (2005): 94. http://dx.doi.org/10.3901/jme.2005.05.094.

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Manhartsgruber, Bernhard, Gudrun Mikota, and Rudolf Scheidl. "Modelling of a Switching Control Hydraulic System." Mathematical and Computer Modelling of Dynamical Systems 11, no. 3 (September 2005): 329–44. http://dx.doi.org/10.1080/13873950500076297.

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Lu, Feiping, Wen Xue, and Xuhua Zhu. "Research on Networked Hydraulic Synchronous Control System." Journal of Physics: Conference Series 1621 (August 2020): 012033. http://dx.doi.org/10.1088/1742-6596/1621/1/012033.

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Vasiliev, VB, and AP Muslimov. "Automatic system to control hydraulic drill operation." IOP Conference Series: Earth and Environmental Science 262 (June 3, 2019): 012082. http://dx.doi.org/10.1088/1755-1315/262/1/012082.

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Araya, Hirokazu, and Masayuki Kagoshima. "Semi-automatic control system for hydraulic shovel." Automation in Construction 10, no. 4 (May 2001): 477–86. http://dx.doi.org/10.1016/s0926-5805(00)00083-2.

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STOSIAK, M. "Vibration insulation of hydraulic system control components." Archives of Civil and Mechanical Engineering 11, no. 1 (January 2011): 237–48. http://dx.doi.org/10.1016/s1644-9665(12)60186-1.

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Ľubica, Miková, and Michal Kelemen. "Design of Algorithm of Hydraulic Control System." Procedia Engineering 48 (2012): 413–19. http://dx.doi.org/10.1016/j.proeng.2012.09.534.

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Chen, Guangrong, Junzheng Wang, Shoukun Wang, Jiangbo Zhao, and Wei Shen. "Compliance control for a hydraulic bouncing system." ISA Transactions 79 (August 2018): 232–38. http://dx.doi.org/10.1016/j.isatra.2018.05.006.

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Mohammed, Jamal AK, Walaa M. Hashim, and Bahaa S. Beram. "Performance Improvement of a Conventional Hydraulic Elevator by Using Electro-Hydraulic Servo Mechanism." Engineering and Technology Journal 38, no. 5A (May 25, 2020): 748–60. http://dx.doi.org/10.30684/etj.v38i5a.367.

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An electro-hydraulic elevator is a new type of enhanced elevators that are used in low-rise buildings that do not exceed more than three floors. In this paper, an electro-hydraulic servo system for controlling the speed of a hydraulic elevator prototype by using a proportional valve and PID controller was investigated theoretically and experimentally. A three floors elevator prototype model with 76cm height was built including hydraulics components and electrical components. The elevator system is fully automated using the Arduino UNO board based Data Acquisition (DAQ) system. LabVIEW software is used to control the hydraulic elevator system through L298 DC drive via the DAQ board. The best PID gains was obtained experimentally. The elevator system prototype could be emplimented for educational purposes; such as learning the undergraduate students in the Electromechanical Engineering Department in the University of Technology how to structuring the electro-hydraulic elevator as well as the appropriate control strategy.

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Wang, Hua Bing, and Jun Ke Hu. "Durability Testing System with Power Recycle for the Variable Displacement Closed-Loop Hydraulic Pumps." Applied Mechanics and Materials 241-244 (December 2012): 1333–37. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.1333.

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A testing system scheme with power recycle for hydraulic pumps’ durability is present, which is based on a hydraulic motor with hydraulicly overridden pressure compensation. The hydraulic motor can adaptively adjust its displacement to meet the demand of displacement match of the power feedback in the system. The system pressure can be set by adjusting the starting control pressure of the motor. The rotating speed of the pump is guaranteed by the control of the driven electrical motor. A hydraulic bridge unit is used to guide the flow from the outport of the pump to the fixed inlet port of the hydraulic motor and thus causes the motor to rotate in a certain direction to drive the pump in order to recycle the power.

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Journal articles on the topic 'Hydraulic control system'

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