The Advantages of New Proportional and Servovalves with Integrated Digital Electronics

The paper presents a new generation of proportional and servovalves with integrated digital electronics. The micro controller allows with its free programmable signal processing options a significant improvement of the dynamic and static performance of the valves. Selected examples demonstrate these improvements. In addition to the performance the valves could be changed from simple hydraulic components to intelligent axis control devices, which are state of the art and are able to compete against electric drive systems. These additional features like self diagnosis, remote access, comfortable control parameter tuning and free programmable characteristics are demonstrated in selected application examples like a wind turbine or an injection molding machine.

Technical paper on the new generation of proportional and servovalves with integrated digital electronics. Presented by Dr.-Ing. Christoph Boes, Engineering Manager, Moog GmbH on March 21, 2006.

Low Noise, Increased Reliability, Digital Control: A New Generation of Radial Piston Pumps

Low noise, greater reliability, easy control options are demands on modern piston pumps. To lower both the noise emission and the high and low-pressure pulsation, the number of pistons of a radial piston pump (RKP) is increased from 7 to 9. By means of CFD and FE calculation the suction path of the RKP is optimized as a compromise between hydraulic (low pressure drop, small inductivity) and mechanic (small deformation, low stresses) functionality. Pressure drop along the suction path was reduced by 20%. The sound emission of the new radial piston pump generation was reduced by up to 5dB(A) in sound power that corresponds to a reduction of wide more than 50%. A new stroke ring design eliminates a possible place of wear. The DCP (Digital Interface Pump) is a new servo radial piston pump adjustment based on a new pilot valve with digital onboard electronics offering an enhanced functionality.

Technical paper on the demands on modern piston pumps. Presented by Dr.-Ing. Dirk Becher, Moog GmbH on March 21, 2006.

Technical Bulletin on DIN Rail Mounted Modules - Issue 2

Technical Bulletin from Moog Australia covering topics such as new Signal Conditioner G123-818, Din Modules for H2S Atmosphere in a Geothermal Power Station, a Servoactuator for a Ship Wreck Application, and pending new releases.

From Moog Australia Pty. Ltd.

New Approach for High Performance Motion Control

Closed loop control of hydraulic or electric systems offers an excellent means of achieving precision movement with big loads and high forces. However, hydraulic servo drives in particular have a lot of anomalies, e.g. non linearities and low damping, which in some applications makes these systems demanding to control. In such cases advanced control features are required in order to get the specified performance out of the drive.

Technical paper on motion control for hydraulic and electric systems by Dipl-Ing. (FH), MBA, Ari Almqvist, Moog GmbH, Germany. Presented at 8th Scandinavian International Conference on Fluid Power, Tampere, Finland - May 7-9, 2003.

Hydraulic System Filters: New ISO Fluid and Cleanliness Rating Standards

Discussion of Moog Hydraulic System Filters, new Filter Rating Standards and revised standards for ISO Cleanliness Levels.

Copyright 2003 by Moog Inc.

Developments in High Performance Proportional Valves with CANOpen Fieldbus Interface

Fieldbus systems were established some time ago in the industry, but proportional valves with fieldbus interfaces have not been available in the past. Fieldbus systems were developed to replace analogue techniques, where various industry standards exists. The counterpart to these industry standards are open fieldbus systems. In addition to the fieldbus standards, device profiles for proportional valves are required. These are currently under development by a group of hydraulics manufacturers.

Technical background information on the new Digitial Interface Valve. Technical paper by Dipl.-Ing. Walter Lenz from Moog GMBH. Presented at The Sixth Scandinavian International Conference on Fluid Power, SICFP'99, May 26-28, 1999, Tampere, Finland

Technical Bulletin on Din Rail Mounted Modules - Issue 1

Technical Bulletin from Moog Australia covering topics such as Servo Amplifier Improvements, new products, and application information.

M3000- A Motion-Control Toolbox for Hydraulic Axes

Technical paper on using the M3000 as a toolbox for hydraulic axes with advanced internal control functions. By Dr.-Ing. Christoph Boes and Dipl.-Ing. Juergen Weiblen, Moog GmbH, Germany.

Presented at the 4th International Fluidpower Conference, Dresden, Germany on 25-26 March 2004.

Contamination Control - A Hydraulic OEM Perspective

Technical paper for Workshop on Total Contamination Control Centre for Machine Condition Monitoring

By R.W. Park, BE (Hons), MIE Aust., CP Eng Managing Director, Moog Australia Pty Ltd, August 1997

Developments in Design of Electrohydraulic Control Valves from Their Initial Design Concept to Present Day Design and Applications

Presented at a workshop on Proportional and Servovalves at Monash University, Melbourne, Australia.

Technical paper by J. C. Jones, BE (Hons) Monash Technical Services Manager, Moog Australia PTY LTD, November, 1997

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