Results 61 to 70 of about 349 (175)
Research on Multi-Mode Control of Electro-Hydraulic Variable Displacement Pump Driven by Servo Motor
ActuatorsThe electro-hydraulic power source with an electro-hydraulic variable pump driven by a servo motor is suitable for electrified construction machinery. To achieve better energy efficiency in different working conditions, the multi-mode control scheme was ...
Zhiqiang Zhang +5 more
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The technical roadmap of the development of variable pitch propeller governors for turboprop
Hangkong gongcheng jinzhanThe variable pitch governor controls the propeller to maintain a constant speed，so that the propeller can be energy-saving and efficient in a wider range of flight envelope.
CHEN Tingting, GUO Yong, PAN Zhongjian
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PID Controller Design for Electro-hydraulic Servo Valve System with Genetic Algorithm
Procedia Computer Science, 2016 AbstractThe proportional-integral-derivative (PID) controller are widely applied with the electro-hydraulic servo system since it is easily to implement and highly efficient. The optimal tuning PID parameter that can increase the performance of the control system.
Samakwong, Tanasak +1 more
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A Novel Composite Control Algorithm for Restraining Nonlinear Superfluous Forces
IEEE Access, 2019 A novel composite control algorithm is proposed to restrain nonlinear superfluous forces of a dual-channel load simulator. The dual-channel load simulator is utilized to measure the dynamic characteristic of an integrated hydraulic driving unit.
Lingxiao Quan +3 more
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Neural Network Identification and Controller on Electro-hydraulic Servo System
Journal of Harbin University of Science and Technology, 2017 The neural networks system identification was used in nonlinear model on valve-control-cylinder electro-hydraulic position servo system. The three layers BP neural network weights and threshold were optimized using LM genetic algorithm，the relationship ...
HAN Gui-hua, WANG Peng-fei, ZHANG Ci-jun
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Mechanics & IndustryElectro-hydraulic position servo system of valve-controlled symmetrical cylinder (EPSSVCS) is a very important and widely used electro-hydraulic servo system, the performance of which is often affected by friction nonlinearity and external random ...
Chen Hongsheng
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Analysis of Performance Effect Factors of Three-Stage Electro-Hydraulic Servo Valve
Journal of Computers, 2009 A new modeling software, AMEsim is put forward in this paper to develop a nonlinear model for a higher performance three stage electro-hydraulic servo valve. The simulation results and experimental results on existing valve are consistent, which proves that the developed model is right.
Xiaochu Liu +4 more
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Effect of Slide Valve Gap Surface Roughness on Particle Transport Properties
AerospaceFuel electro-hydraulic servo valves are core components in the fuel control system of aero-engines, and their performance directly affects thrust regulation and power output precision.
Jin Zhang +6 more
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MachinesAiming to solve the difficult problem of the miniaturization of servo valves, this paper designs a subminiature two-dimensional (2D) electro-hydraulic servo valve, which realizes the integration of the pilot stage and the power stage and significantly ...
Lei Pan +4 more
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Numerical Simulations on Flow Characteristics of a Nozzle-Flapper Servo Valve With Diamond Nozzles
IEEE Access, 2019 Nozzle-flapper servo valves are widely used in modern electro-hydraulic control systems of many engineering applications. Flow cavitation in the nozzle-flapper pilot stage could produce noise and cavitation erosion, reducing the performance stability and
He Yang, Wen Wang, Keqing Lu
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