Keyword: Hydraulic systems

Articles: Motion Control

Any manufacturing facility that uses hydraulics powered by conventional fixed-speed hydraulic power units (HPUs) has engineers and personnel who know all too well how large,...

Application Briefs: Mechanical & Fluid Systems
Many presses continue using inefficient and unreliable hydraulic pumps.
Briefs: Mechanical & Fluid Systems
An electrically driven soft valve paves the way for fully soft robots.
Application Briefs: Mechanical & Fluid Systems
The retrofit uses unconventional technologies.
Articles: Mechanical & Fluid Systems
Learn seven key design considerations for implementing electrohydraulic valves.
Briefs: Energy
Applications include wind turbines, solar arrays, commercial space mobile launchers, and industrial process stacks and equipment.
Briefs: Transportation
The new technology demonstrates a 20 percent savings in fuel in typical passenger car low-load operating conditions.
Articles: Mechanical & Fluid Systems
Taking a holistic approach to sealing systems in hydraulic systems using chrome alternatives helps engineers achieve optimum function.
Briefs: Mechanical & Fluid Systems
Applications include valves, tubes, and other gas and fluid system components.
Briefs: Energy
This robot “blood” stores energy, transmits force, operates appendages, and provides structure, all in an integrated design.
Briefs: Aerospace
Fluid-Filled Frequency-Tunable Mass Damper

Innovators at Marshall Space Flight Center developed the fluid-filled Frequency-Tunable Mass Damper (FTMD) technology that allows for significant distribution of loads while also providing a simple mechanism that allows for the capability to change its frequency of mitigation with negligible impact on...

Q&A: Mechanical & Fluid Systems

Robert F. Shepherd is Associate Professor of Mechanical and Aerospace Engineering at Cornell University in Ithaca, NY. He is leading a team exploring the use of hydraulic fluids in soft robots to also...

Briefs: Materials

While different approaches have been used to create artificial muscles — including hydraulic systems, servomotors, shape-memory metals, and polymers that respond to stimuli — they all have limitations such...

Briefs: Mechanical & Fluid Systems
Cryogenic Hydraulically Actuated Isolation Valve

Researchers at NASA's Marshall Space Flight Center have developed a cryogenic isolation valve that utilizes the upstream line pressure of cryogenic fluids for actuation. Previously, the use of cryogenic fluids for actuation systems had been too difficult to control and resulted in unsafe operating...

Briefs: Mechanical & Fluid Systems
Hydraulic-Based Spherical Robot

Current spherical robots rely upon rotating mechanical weights inside the sphere to change the center of gravity of the sphere, causing the robot to roll. The use of rotating mechanical weights is not optimal due to the reliance upon moving parts, which can present burdensome maintenance issues. It would be...

Application Briefs: Sensors/Data Acquisition

Farming has not been untouched by the IoT revolution. The relationships among field conditions, crops, and strategies for planting, irrigating, and harvesting are complex, yet vital for...

Briefs: Robotics, Automation & Control

Soft robots are made from soft materials that react to applied voltage with a wide range of motions. Such soft robots contain tremendous potential for future applications, as they adapt to dynamic...

Briefs: Test & Measurement

Wind turbine designers are working to provide blade designs that allow a turbine connected to the blades or rotor to effectively convert wind into electricity. The blades must also be...

Articles: Manufacturing & Prototyping

Proper filtration plays an important role in ensuring that hydraulic systems operate trouble-free. High-performance filters maintain the cleanliness of the hydraulic fluid over its entire service life. In...

Articles: Motion Control

The need for actuators has grown exponentially. Nearly everywhere you look you can see pneumatic, hydraulic, or electric actuator systems at work in an endless variety of applications. There are many...

Articles: Motion Control

Advances in motion control technology have prompted a new debate — do hydraulic cylinders or electric linear actuators offer the best solution for a linear motion application?...

Articles: Motion Control

With an increased focus on plant productivity and equipment reliability, Supervisory Control and Data Acquisition (SCADA) systems have become vital tools to reduce downtime while increasing asset...

Briefs: Robotics, Automation & Control

Human operation in space over long time periods causes bone and muscle deterioration, so there is a need for countermeasures in the form of physical exercises consisting of working against controlled...

Briefs: Information Technology

NASA needed an innovative solution to conduct system assessments of frameworks and to characterize subsystems of interest. This tool would be required to determine...

Application Briefs: Motion Control

Southern Manufacturing Group (SMG) of Morrison, TN, makes automotive components and industrial valves. In 2012, the automation system for its 175-ton hydraulic forming...

Briefs: Electronics & Computers
General-Use Nodal Network Solver (GUNNS)

Crewed space vehicle training has always required highfidelity models of vehicle systems. Many of these systems, particularly of the “flow” variety, benefit from modeling the system as a whole, rather than relying only on the interactions between individual components. In general, system properties...

Application Briefs: Motion Control

Hydraulic and pneumatic systems have traditionally been the market leader in providing power in the aerospace and defense industry because of their low cost and...

Briefs: Electronics & Computers
Submerged AUV Charging Station

Autonomous Underwater Vehicles (AUVs) are becoming increasingly important for military surveillance and mine detection. Most AUVs are battery powered and have limited lifetimes of a few days to a few weeks. This greatly limits the distance that AUVs can travel underwater. Using a series of submerged AUV charging...

Articles: Motion Control

Performing closed-loop control of hydraulic servo systems is often more challenging than controlling servomotor systems. The main reason is that hydraulic systems use compressible oil to...