Results 41 to 50 of about 11,629 (228)
Stress analysis of crack characteristic of anthracite under dynamic loading
Deep Underground Science and Engineering, Volume 5, Issue 1, Page 56-65, March 2026.In this article, the dynamic compression test of anthracite under five strain rates is carried out, the evolution law of three kinds of crack characteristic stress is analyzed, and a prediction model of the crack characteristic stress threshold considering the strain rate effect is established. Then, the rationality of crack characteristic stress under
Yun Bai +5 more
wiley +1 more source
Mechanism of Temperature’s Acting on Electro-Hydraulic Servo Valve [PDF]
IEEE Access, 2019 To understand temperature's influence on the electro hydraulic servo valve, a theoretical model of describing the detailed mechanism is necessary. For a servo valve experiencing actual working conditions, the temperature variation acts on the performance of the torque motor, which results from drifts of the air gaps' thicknesses, the permanent magnets'
Hao Yan, Yang Liu, Li Ma
openaire +1 more source
Deep Underground Science and Engineering, Volume 5, Issue 1, Page 220-232, March 2026.The permeability variation of rocks during complete stress–strain processes was investigated. A mathematical model describing the influence of rock damage on permeability was constructed. The permeability–stress relationship between soft rock and hard rock was proposed.
Zhen Huang +6 more
wiley +1 more source
CommunicationsHydraulic motion platforms are widely utilized in various environments due to their capacity to bear heavy loads and provide long actuator strokes. The predominant control system employed for hydraulic motion platforms is the electro-hydraulic servo ...
Ezz Eldin Ibrahim +4 more
doaj +1 more source
Modelling, transient response and hydraulic behaviour of 2DOF stabilization platform [PDF]
FME Transactions, 2020 The main part of the hydraulic circuit of the hydraulic stabilization platform (HSP) is the electro-hydraulic servo valve (EHSV), which is very expensive due to its manufacturing requirements, so the proper selection for the geometrical configuration of ...
Ibrahim Ezz Eldin +3 more
doaj
Modeling and fault tolerant control of an electro-hydraulic actuator [PDF]
, 2016 In the modern industry, electro-hydraulic actuators (EHAs) have been applied to various applications for precise position pressure/ force control tasks.
Ahn, Kyoung Kwan +4 more
core +1 more source
Position Control of Electro‐Hydraulic Actuator System With Disturbances Compensation
Energy Science &Engineering, Volume 14, Issue 2, Page 831-842, February 2026.A novel output feedback controller based on global fast terminal sliding mode with disturbances rejection to achieve accurate position tracking control for electro‐hydraulic cylinder system, which shows the great control potential of the designed output feedback controller during the start‐up and operation of the electro‐hydraulic actuator system ...
Yunfei Wang, Haigang Ding, Jiaxiang Man
wiley +1 more source
A PID Control System of Electro-Hydraulic Servo Based on Feedforward Prediction
发电技术, 2018 A PID control system based on feedforward prediction was designed according to the thought of predictive control, in view of the existing model of electro-hydraulic servo control system..
Yinlong ZHANG +4 more
doaj +1 more source
Applied Sciences, 2020 The traditional valve-controlled hydraulic servo system has large throttling losses and undergoes serious heat problems when used in electro-hydraulic servo systems (EHSSs) for a rolling shear.
Suhong Lin +4 more
doaj +1 more source
Introduction to Nuclear Propulsion: Lecture 15 - Nuclear Test Operations [PDF]
, 1963 The test operation of nuclear power plants, specifically nuclear rockets, bears some interesting similarities to the operation of chemical rocket tests as well as, of course, many differences.
Drexler, R. L., Storrs, C. L.
core +1 more source