Data-Based Flow Rate Prediction Models for Independent Metering Hydraulic Valve

Su, Wenbin; Ren, Wei; Sun, Hanyu; Liu, Canjie; Lu, Xuhao; Hua, Yingli; H, Wei; Han, Jing

doi:10.3390/en15207699

Cited by 9 publications

(3 citation statements)

References 28 publications

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“…Neural networks designed for hydraulic systems are commonly used for forecasting future parameter values, such as flow rate and pressure. Su [3] proposed an accurate data-based flow rate prediction method for a four-spool independent-metering valve. Eight data-based estimation models, including machine learning and deep learning, were built and trained.…”

Section: Neural Predictionmentioning

confidence: 99%

Artificial Intelligence Methods in Hydraulic System Design

Filo

2023

Energies

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Reducing energy consumption and increasing operational efficiency are currently among the leading research topics in the design of hydraulic systems. In recent years, hydraulic system modeling and design techniques have rapidly expanded, especially using artificial intelligence methods. Due to the variety of algorithms, methods, and tools of artificial intelligence, it is possible to consider the prospects and directions of their further development. The analysis of the most recent publications allowed three leading technologies to be indicated, including artificial neural networks, evolutionary algorithms, and fuzzy logic. This article summarizes their current applications in the research, main advantages, and limitations, as well as expected directions for further development.

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Section: Neural Predictionmentioning

confidence: 99%

Artificial Intelligence Methods in Hydraulic System Design

Filo

2023

Energies

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“…Nguyen et al [20] combined pump control with an independent metering system, adopted the control strategy of speed feedforward and position feedback, and designed the switching mode of the system to increase the accuracy and energy-saving of the system response. Su et al [21] proposed a data-based flow prediction method, where the independent metering system composed of four 2/2 proportional valves served as the research object. They also compared eight different data-based estimation models to provide a reference for the high-precision flow prediction of hydraulic valves.…”

Section: Control Strategymentioning

confidence: 99%

Research on Design and Control Strategy of Novel Independent Metering System

Yang,

Li,

Zhong

et al. 2023

Sustainability

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The independent metering system used in the combination of traditional cartridge proportional valves employs an excessive number of components, which increases the complexity of the control strategy. To address this problem, a novel independent metering system based on pilot hydraulic control was developed. Following the pressure and flow requirements, the structure and valve body size of the two spools were designed. The effect of the parameter change in the control valve on the dynamic response characteristics of the main spool was investigated by simulation. A control strategy was developed based on load force direction prediction and two-chamber pressure switching to verify the feasibility of working mode switching during load direction change. As indicated by the results, compared with the mode switching control strategy of the traditional independent metering system, the proposed control strategy could effectively reduce the number of mode switching and ensure the continuity of the actuator operation. Compared with the traditional load-sensitive valve control system, the proposed pilot-controlled independent metering system achieved an average energy-saving efficiency of 47.27%. This study provides technical reference for the low energy consumption, high efficiency, and sustainable development of hydraulic systems.

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“…In [11], a basic concept and simulation study for a flow-on-demand hybrid system combined with an IM system applied to a forestry crane was presented. In [12], the data-based characteristics of a full-bridge valve system applicable for independent metering were identified by different strategies, including machine learning concepts.…”

Section: Introductionmentioning

confidence: 99%

Cybernetic Proportional System for a Hydraulic Cylinder Drive Using Proportional Seat-Type Valves

Kogler,

Plöckinger,

Foschum

2023

Actuators

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Hydraulic cylinders are well known as cheap and robust actuators for moving heavy loads, especially in harsh environments. For this reason, they are often used in construction machines such as excavators. Basically, the hydraulic cylinders are controlled by four-way proportional spool valves, resulting in poor energy efficiency due to resistance control. Furthermore, because all valve edges are located at the same spool, common proportional valves suffer from limited flexibility with regard to different loads. Independent metering (IM) is a well-known strategy for making proportional hydraulic drives more efficient and more flexible because each port of the actuator can be connected individually to pressure or tank by independent two-way proportional valves. In this paper, the IM concept is realized as an open-loop control for a hydraulic cylinder drive, which, in combination with a human operator, constitutes a so-called cybernetic proportional system (CPS). The piston velocity commanded by the operator is controlled by the compensation of the static characteristics of the proportional seat-type valves. Basic simulations show the benefits and also the problems of open-loop independent metering. Furthermore, measurements on one actuator of a real excavator regarding controllability and energy consumption are presented.

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Data-Based Flow Rate Prediction Models for Independent Metering Hydraulic Valve

Cited by 9 publications

References 28 publications

Artificial Intelligence Methods in Hydraulic System Design

Artificial Intelligence Methods in Hydraulic System Design

Research on Design and Control Strategy of Novel Independent Metering System

Cybernetic Proportional System for a Hydraulic Cylinder Drive Using Proportional Seat-Type Valves

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