Abstract
This paper presents a novel hydraulic system featuring a
hydraulic differential cylinder directly connected to two fixed-displacement hydraulic pumps driven by independent electric
servo motors. By controlling the velocities of these two electric servo motors, precise control over the motion of the hydraulic cylinder is achieved. This innovative system is referred
to as a two-motor-two-pump (2M2P) motor-controlled hydraulic
cylinder (MCC). Unlike valve-controlled cylinders, the absence
of valve throttling in a 2M2P MCC significantly enhances the
system’s energy efficiency. However, the load-holding function
in four-quadrant operation enforced by legislation for hydraulic
cylinders used for, for example, lifting crane booms, is difficult to
implement in a 2M2P MCC. This paper introduces a novel 2M2P
MCC capable of achieving passive load-holding functionality via
minimum cylinder pressure control. A non-linear model of the
system is developed in MATLAB/Simulink and validated experimentally. The degree of state coupling is analyzed through model
linearization and the relative gain array method. A multi-input multi-output control algorithm with a state decoupling function is
designed and experimentally verified on a laboratory single-boom
crane. The experimental results demonstrate the effectiveness of
the proposed system and control algorithm under given operating
conditions.
hydraulic differential cylinder directly connected to two fixed-displacement hydraulic pumps driven by independent electric
servo motors. By controlling the velocities of these two electric servo motors, precise control over the motion of the hydraulic cylinder is achieved. This innovative system is referred
to as a two-motor-two-pump (2M2P) motor-controlled hydraulic
cylinder (MCC). Unlike valve-controlled cylinders, the absence
of valve throttling in a 2M2P MCC significantly enhances the
system’s energy efficiency. However, the load-holding function
in four-quadrant operation enforced by legislation for hydraulic
cylinders used for, for example, lifting crane booms, is difficult to
implement in a 2M2P MCC. This paper introduces a novel 2M2P
MCC capable of achieving passive load-holding functionality via
minimum cylinder pressure control. A non-linear model of the
system is developed in MATLAB/Simulink and validated experimentally. The degree of state coupling is analyzed through model
linearization and the relative gain array method. A multi-input multi-output control algorithm with a state decoupling function is
designed and experimentally verified on a laboratory single-boom
crane. The experimental results demonstrate the effectiveness of
the proposed system and control algorithm under given operating
conditions.
| Originalsprog | Engelsk |
|---|---|
| Titel | Proceedings of ASME/BATH 2023 Symposium on Fluid Power and Motion Control, FPMC 2023 |
| Antal sider | 10 |
| Forlag | American Society of Mechanical Engineers |
| Publikationsdato | okt. 2023 |
| Artikelnummer | V001T01A039 |
| ISBN (Trykt) | 978-0-7918-8743-1 |
| ISBN (Elektronisk) | 9780791887431 |
| DOI | |
| Status | Udgivet - okt. 2023 |
| Begivenhed | 2023 ASME/BATH Symposium on Fluid Power and Motion Control - Lido Beach Resort, Sarasota, Florida, USA Varighed: 16 okt. 2023 → 18 okt. 2023 https://event.asme.org/FPMC |
Konference
| Konference | 2023 ASME/BATH Symposium on Fluid Power and Motion Control |
|---|---|
| Lokation | Lido Beach Resort |
| Land/Område | USA |
| By | Sarasota, Florida |
| Periode | 16/10/2023 → 18/10/2023 |
| Internetadresse |
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