How to design state-of-the-art electrohydraulic drive systems

This article from Hydac Technology Ltd outlines some of the considerations when designing state-of-the-art electrohydraulic drive systems, and the techniques to apply.

Electro-hydraulic drive systems are used to power everything from robots and presses to elevators and automobiles. Designing state-of-the-art systems is actually a multi-faceted process that can take years to accomplish fully. A number of techniques can be used in order to make the planning process much smoother, as outlined below.

What to consider

When planning an electro-hydraulic system, several things should be taken into consideration. For example, how other moving parts such as valves, pumps, and cylinders all behave, as this will affect the overall design of a system. Also think about different operating variables such as acceleration, pressure, speed of operation and the flow of liquid or other materials. All of these things should be calculated and recalculated multiple times in order to ensure results that are as precise and accurate as possible.

Multi-body dynamics

Electro-hydraulic drive systems often contain drive forces that are transferred from kinematic mechanisms directly to the various components of the machine itself. This is often the case with machines that have moving platforms, along with robots, presses and chassis. Multi-body dynamics are needed to ensure the stationary and moving components work in tandem as they should. This requires taking a number of variables into account, along with the interlinking of the different forces of the various drive units in order to make sure everything works as it should. Simulation software can play a significant role in ensuring that each component is designed to do exactly what it is supposed to.

Fully-integrated system analysis

Simulation of electro-hydraulic drive systems includes an analysis of all the different systems and subsystems of a particular piece of equipment. Some of the things that need to be considered are the controls, mechanics and movement sequences of various parts in order to ensure they will all move perfectly in conjunction with one another. For very complex electro-hydraulic systems, this could require interlinking more than one simulation program together in order to duplicate a machine's exact functions. This can sometimes be a very time-consuming process, but is nonetheless very important in developing a system that performs the exact function it is designed to do.

Hardware-in-the-loop simulations

Hardware-in-the-loop (HIL) simulations can help cut down on design costs by linking the control hardware with a 'real time' virtual model of a machine. Known as virtual commissioning, it allows development software to be optimised on site without the need to actually build a prototype of a particular machine. This aids with the development of software for process controls, while also making it easier to commission and troubleshoot this software. As a result, HIL simulations enable machine builders to save money on what can sometimes be one of the most costly aspects of designing new electro-hydraulic drive systems.

Electro-hydraulic drive systems make life easier for a number of people, and must be built reliably if they are to perform as intended. Hydac Technology employs all of the techniques described above to ensure that machine builders meet the required performance specification for the machinery or equipment being developed. Follow the link to find out more about the services and products available from Hydac.

Hydac Technology Ltd

De Havilland Way
Windrush Park
OX29 0YG

+44 (0)1993 866366

More technical articles
13 hours ago
New eBook offers expert insights on embedded security
Mouser Electronics announces a new eBook produced in collaboration with global semiconductor leader Analog Devices (ADI). In Embedded Security: Keeping Edge Data Safe, experts from ADI and other companies take a deep look at embedded security concepts and their importance.
17 hours ago
New era beckons at UK’s largest online valve supplier
Gary Hopkinson, founder of Valves Online, a sales partner for Bürkert, has announced his retirement, planned for the end of this year. In March, the UK’s largest online valves supplier underwent a business acquisition by R&G Fluid Power Group. Gary has been assisting the transition while Valves Online is set to retain its successful business model.
20 hours ago
Lowering production costs in the beverage industry
BrauBeviale, one of the leading capital goods fairs for the beverage industry worldwide, is due to take place in Nuremberg from November 28 to 30, 2023. Schaeffler will be on site with a presentation that focuses on solutions for economical and efficient beverage production.
1 day ago
NSK Europe makes significant environmental progress in FY2022-23
NSK Europe continues to make improvements to its environmental credentials, with the past 12 months seeing significant progress in a number of key metrics as the company works towards its ultimate carbon-neutral goal.
1 day ago
Schaeffler UK partners with homelessness charity Centrepoint
Schaeffler UK has become a supporting partner of Centrepoint, the UK’s leading homelessness charity for young people. As well as making a donation to the charity, Schaeffler UK will support a number of Centrepoint fundraising events and campaigns, and will offer its own employees the opportunity to work with the charity as volunteers.
1 day ago
WDS reinforces Core Values for ultimate customer experience
WDS Components continues to strengthen its commitment to customers, including optimised stock availability and delivery, as well as ensuring quality throughout the entire customer journey. Now the Leeds manufacturer and supplier of standard parts and components has underpinned its customer assurance with the re-energising of its Core Values.
1 day ago
Solenoid interlocks are robust, compact and Ex-compatible
At the Powtech 2023, the steute business unit ‘Controltec’ will be presenting a new addition to its product range: the Ex STM 515 series of Ex solenoid interlocks with ATEX and IECEx approvals.
1 day ago
OMRON Robotics and Safety Technologies enters partnership with Lowpad
OMRON Robotics and Safety Technologies and Lowpad have announced a strategic partnership to expand OMRON’s line of mobile robots with Lowpad’s low-profile product offering.
2 days ago
Create double-sheet detection systems using Contrinex smart sensors
Contrinex smart sensors offer an affordable way to detect the presence of individual sheets and also detect double-sheet conditions, triggering an alarm and halting production to prevent damage to the press.
2 days ago
Essentra makes further progress on sustainability with latest EcoVadis rating
Essentra has been awarded a silver medal by EcoVadis, the global provider of business sustainability ratings, as confirmation of the organisation’s ongoing journey towards a more sustainable future.

Login / Sign up