Results 11 to 20 of about 22,047 (273)
Hyperbaric Vacuum‐Based Artificial Muscles for High‐Performance Actuation
Advanced Intelligent Systems, 2023 Existing pneumatic artificial muscles generally rely on the use of either positive or negative pressure for actuation with each having their own advantages and disadvantages.
Altair Coutinho +4 more
doaj +1 more source
Design of a pneumatic soft actuator controlled via eye tracking and detection
Heliyon, 2020 This work describes the control of a pneumatic soft robotic actuator via eye movements. The soft robot is actuated using two supply sources: a vacuum pump and an air supply pump for both negative and positive air supply sources respectively.
Victoria Oguntosin, Ademola Abdulkareem
doaj +1 more source
Frontiers in Bioengineering and Biotechnology, 2023 The limited portability of pneumatic pumps presents a challenge for ankle-foot orthosis actuated by pneumatic actuators. The high-pressure requirements and time delay responses of pneumatic actuators necessitate a powerful and large pump, which renders ...
Junming Wang +6 more
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Constrained Optimization of a Hydraulic Actuation System
Energies, 2022 Operators of mobile platforms that employ hydraulic actuation, such as excavators, seek more efficient power transfer from source to load. Pump-controlled architectures achieve greater efficiency than valve-controlled architectures but exhibit poor ...
Michael T. Fox, Edwin K. P. Chong
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Comparative Energy Analysis of a Load Sensing System and a Zonal Hydraulics for a 9-Tonne Excavator
Actuators, 2020 With the rising demand for energy efficiency, displacement-controlled or so-called pump-controlled systems have become an attractive research topic for applications in construction machinery and other off-road vehicles.
Paolo Casoli +3 more
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Surface micromachined electrostatically actuated micro peristaltic pump [PDF]
, 2004 An electrostatically actuated micro peristaltic pump is reported. The micro pump is entirely surface micromachined using a multilayer parylene technology. Taking advantage of the multilayer technology, the micro pump design enables the pumped fluid to be
Lin, Qiao +4 more
core +1 more source
A Self-Contained Cylinder Drive with Indirectly Controlled Hydraulic Lock [PDF]
Modeling, Identification and Control, 2020 This paper presents a self-contained pump-controlled hydraulic linear drive including an innovative load holding sub-circuit. For safety critical applications such as crane manipulators, locking valves or load holding valves are enforced by legislation ...
Søren Ketelsen +3 more
doaj +1 more source
Miniature 3D-Printed Centrifugal Pump with Non-Contact Electromagnetic Actuation
Micromachines, 2019 We present a miniature 3D-printed dynamic pump using the centrifugal operating principle. Dynamic pumps typically yield higher flow rates than displacement pumps at reasonable output pressure.
Luca Joswig +2 more
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Journal of Physics: Conference Series, 2023 Abstract Pump-controlled hydraulic circuits are more efficient than conventional valve-controlled ones. Pump-controlled hydraulic circuits for double rod cylinders are well developed and, presently, implemented in many applications including aviation.
A Imam, M S Tolba, N Sepehri
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A bi-directional electrochemically driven micro liquid dosing system with integrated sensor/actuator electrodes [PDF]
, 2000 In this contribution a micro liquid dosing system is presented, which allows bi-directional manipulation of fluids (i.e. pushing out and pulling in of liquids) by the electrochemical generation and removal of gas bubbles. Bi-directionality is obtained by
Bergveld, Piet +2 more
core +3 more sources