Results 41 to 50 of about 3,510 (216)
Deep Underground Science and Engineering, EarlyView.Based on experimental results and theoretical analysis, an established rock damage accumulation model that comprehensively considers the preapplied static load, impact peak value, impact frequency, and impact times. Abstract To study the rock damage mechanism under high static loading and superimposed medium strain rate cyclic impact loading, a series ...
Wei Wang +6 more
wiley +1 more source
Physiologic-range three/two-way valve for respiratory circuits
HardwareX, 2021 A 3D-printed three/two-way valve compatible with respiratory circuits is presented. It is actuated by a servo motor (HXT12K), which is able to be controlled by any PWM-capable micro controller.
Lui Holder-Pearson +2 more
doaj +1 more source
Effect of Servo Valve Dynamic on Precise Position Control of a Pneumatic Servo Table
International Journal of Automation Technology, 2008 In experimentally investigating the effect of servo valve dynamics on control of a pneumatic servo table with an air bearing, we propose control using a PDD2 and a feedforward controller, then test step and trajectory tracking response with natural servo valve frequencies.
Toshinori Fujita +4 more
openaire +1 more source
Determinação de pontos de operação para conjuntos válvula-cilindro pneumáticos [PDF]
, 2012 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2009Tradicionalmente, o uso da pneumática em aplicações industriais e de automação está centrado em ...
Oliveira, Lidiane Gonçalves de
core
Developmental Dynamics, EarlyView.Abstract Understanding the dynamic nature of developmental networks requires live imaging techniques capable of capturing real‐time developmental processes in wild‐type and mutant embryos as they are exposed to pharmacological perturbations. A peculiar developmental patterning process in early vertebrate embryos is the sequential segmentation of ...
Mohammed Nakhuda, M. Fethullah Simsek
wiley +1 more source
Research on PID Position Control of a Hydraulic Servo System Based on Kalman Genetic Optimization
Actuators, 2022 With the wide application of hydraulic servo technology in control systems, the requirement of hydraulic servo position control performance is greater and greater.
Ying-Qing Guo +4 more
doaj +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT In this study, a robust position control strategy is presented for a two‐stage electro‐hydraulic actuator system using a fractional‐order proportional–integral–derivative (FOPID) controller tuned by Kirchhoff's law algorithm (KLA). Electro‐hydraulic systems exhibit strong nonlinearities, parameter uncertainties, and external disturbances ...
Ridvan Firat Cinar +8 more
wiley +1 more source
IEEE Access, 2019 The performance of the pneumatic elements and the micro-controller steadily increases as the price of them decreases. This trend promotes high performance tracking control research on pneumatic servo systems. However, it is very difficult to obtain exact
Hai-Peng Ren +3 more
doaj +1 more source
IEEE Access, 2020 Two-stage electrohydraulic servo-valves play an important role in the most modern hydraulic servo control systems for fight wing controls, manufacturing robots, and many engineering applications.
Bijan Krishna Saha +2 more
doaj +1 more source
Machines, 2021 The manufacturing of a high-precision servo valve belongs to multi-variety, small-batch, and customized production modes. In the process of assembly and commissioning, various characteristic parameters are critical indicators to measure product ...
Xuemin Sun +4 more
doaj +1 more source