Constrained Optimization of a Hydraulic Actuation System

Michael T. Fox and Edwin K. P. Chong ()
Additional contact information
Michael T. Fox: Walter Scott Jr. College of Engineering, Colorado State University, Fort Collins, CO 80523, USA
Edwin K. P. Chong: Walter Scott Jr. College of Engineering, Colorado State University, Fort Collins, CO 80523, USA

Energies, 2022, vol. 15, issue 15, 1-12

Abstract: 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 tracking performance. We present a system-design optimization technique that ensures compliance with design requirements and minimizes peak input power, which correlates inversely with efficiency. We utilize the optimization technique to size a valve-controlled hydraulically actuated stabilized mount on a mobile platform. Our optimization framework accounts for the disturbance spectrum, a stabilization performance measure, the system dynamics, and control system design. Our technique features automated requirement derivation in the form of a parameter estimation, which supports design decisions under constraints. Our results show that one of four inequality constraints is active. This constraint represents a common design rule and results in limiting efficiency. We show that relaxing this constraint is practically feasible and leads to higher efficiency in achieving the required performance. We propose adding an inerter to justify the relaxed constraint and present the resulting open-loop servo transfer function.

Keywords: valve-controlled; constant-pressure; pump-controlled; variable-pressure; load sensing; displacement control; hydraulic actuation; disturbance rejection; servo; regulation; frequency transfer function (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/15/5711/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/15/5711/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:15:p:5711-:d:881599

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().