Image

How to Calculate Loop Gain in Electrohydraulic Servo Systems

May 29, 2015
Hey, don't look at me; I'm no expert in this field. But Robert Burton certainly was. He authored countless books and technical paper covering closed-loop control of electrohydraulic systems. He also contributed to Hydraulics & Pneumatics. And even though his works wer published about 20 years ago, he insight into the behavior of loads, hydraulic flow and pressure, and electronic control are just as relevant today.

Hey, don't look at me; I'm no expert in this field. But Robert Burton certainly was. He authored countless books and technical paper covering closed-loop control of electrohydraulic systems. He also contributed to Hydraulics & Pneumatics. And even though his works were published about 20 years ago, his insight into the behavior of loads, hydraulic flow and pressure, and electronic control are just as relevant today. The only difference is that today we use digital control control instead of analog — but, like gravity, the physics have not changed.

Below is a summary of one of his articles, and I'll be posting another article in a few days.

Most hydraulics practitioners can readily size valve-controlled hydraulic-cylinder power drives for position-control applications using hydraulic servos. However, determining the allowable loop gain to ensure a stable closed-loop output response seems to be a problem for many of them. Here’s a simple method for determining allowable loop gain that we have used many times during our 40 years involvement in hydraulic servo design.

Click here to read the article in its entirety.

About the Author

Alan Hitchcox Blog | Editor in Chief

Alan joined Hydraulics & Pneumatics in 1987 with experience as a technical magazine editor and in industrial sales. He graduated with a BS in engineering technology from Franklin University and has also worked as a mechanic and service coordinator. He has taken technical courses in fluid power and electronic and digital control at the Milwaukee School of Engineering and the University of Wisconsin and has served on numerous industry committees.

Continue Reading

Handbook Simplifies Advanced Aspects of Mobile Hydraulic Controls

May 10, 2017
Author Brendan Casey lays out his hydraulics know-how that he acquired over 27 years in a simple handbook made for people that want to improve their skills in troubleshooting ...

Kidney loops: They aren't just for hydraulics any more

Sept. 1, 2004
When was the last time you changed the oil in your refrigerator's compressor? That was a question posed to me by Ken Stofen of Racine, Wis. The answer, of course, is never, and...

Sponsored Recommendations

MONITORING RELAYS — TYPES AND APPLICATIONS

May 15, 2024
Production equipment is expensive and needs to be protected against input abnormalities such as voltage, current, frequency, and phase to stay online and in operation for the ...

All-In-One DC-UPS Power Solutions

March 13, 2024
Introducing the All-In-One DC-UPS, a versatile solution combining multiple functionalities in a single device. Serving as a power supply, battery charger, battery care module,...

Motor Disconnect Switches

March 13, 2024
With experienced Product Engineers and Customer Service personnel, Altech provides solutions to your most pressing application challenges. All with one thought in mind - to ensure...

DC Power Solutions: Streamlined Power Supplies for Every Need

March 13, 2024
CBI All In One UPS Power Solutions combine the requirements for several applications in just one device which can be used as power supply unit, battery charger, battery care module...