Motion control of multi-actuator hydraulic systems for mobile machineries: Recent advancements and future trends

Different strategies for improving the energy efficiency of a power hydraulic system have been reviewed in this article. The energy-saving scheme is classified into three categories: S ystem design, Improving components or product functions and Loss reduction. The sub-categories of energy-saving strategies are discussed briefly. Also, different energy-saving potentials of power hydraulic system are presented in tabular form for clear understanding on the chronological development toward energy-efficient fluid power system.

show abstract

“…The functions of the PLC programmer, that is, design, implementation and position tuning are now performed by the motion control processors. 62…”

Section: Different Strategies Of Energy Savingsmentioning

confidence: 99%

Energy-saving strategies on power hydraulic system: An overview

Mahato

Ghoshal

2020

Proceedings of the Institution of Mechanical Engineers, Part I:

View full text Add to dashboard Cite

show abstract

“…Regarding the joint mapping for the complicated redundant manipulator, three different approaches have been studied. First one is the end effector position computation by the inverse kinematics based on the human hand motion detection (Gong et al, 2018;Xu et al, 2018). Second one is the mode change method.…”

Section: Difficulties In Kinematic Discrepancymentioning

confidence: 99%

Robotic remote control based on human motion via virtual collaboration system: A survey

Jung

Song

2018

JAMDSM

View full text Add to dashboard Cite

This paper offers a review of the latest robotic remote control schemes that are based on human motion through the virtual collaboration system. The robotic remote control schemes have been studied and developed to combine the intelligence of humans with the precision and mechanical strength of robots. They have performed an important role in some dangerous environments by replacing humans in many difficult jobs, but the lack of intuitive control interfaces causes decreased efficiency. To address this problem, various approaches have been recently investigated, including human motion-based control, visual feedback systems, tactile or force feedback, and other various haptic systems. This paper describes the tendencies of these efforts and discusses possibilities and limitations in three parts: remote control based on human motion, multimodal feedback schemes for realistic interaction, and virtual collaboration systems.

show abstract

“…Excavator is a typical construction machine with multiple actuators, and it has the characteristics of frequent compound actions, difficult operation and high energy consumption. With the rapid economic development and the emergence of global energy problems, people have higher and higher requirements for manipulation performance [1]- [2] and energy saving of excavators [3]- [4]. The mode that a single pump provides hydraulic oil for multiple actuators is widely used in excavators [5], however, the pump flow always preferentially flows to the lighter-loaded actuator, which makes the coordination of multiple actuators worse and affects the experience of operators.…”

Section: Introductionmentioning

confidence: 99%

Research on Optimal Control of Excavator Negative Control System Based on Secondary Controllable Main Valve

Yuan

et al. 2022

IEEE Access

View full text Add to dashboard Cite

In order to optimize the energy efficiency and action coordination of negative control excavators, a secondary control circuit of main valve is proposed, which sets an electric proportional pressure reducing valve between joystick-pilot valve and main valve, so that main valve opening can be adjusted twice according to the actual working conditions to meet system control requirements. This paper takes the swingdipper system as the research object, and studies the overload action and compound action of swing motor and dipper cylinder. In order to reduce the overflow caused by overload, an on-demand flow control strategy is designed to match the pump-valve flow with the demand flow of actuators. In order to solve the problem of uncoordinated compound actions caused by load difference, a flow-ratio control strategy is designed to make the flow ratio of actuators equal to the stroke ratio of joysticks. The system performance test of a 37ton excavator was carried out, and a simulation model of the swing-dipper system was built. Based on the test and model, the two control strategies were simulated, and the results indicate that, compared with the original hydraulic main valve, the proposed secondary controllable main valve and its control strategies can reduce the motor/pump overflow when the motor/cylinder is overloaded, and can adjust the actuator flow ratio when the excavator performs a compound action, thereby improving the energy saving and manipulation performance of the excavator.INDEX TERMS Negative control excavator, secondary control, main valve, on-demand flow, flow ratio.

show abstract

Motion control of multi-actuator hydraulic systems for mobile machineries: Recent advancements and future trends

Cited by 45 publications

References 42 publications

Energy-saving strategies on power hydraulic system: An overview

Energy-saving strategies on power hydraulic system: An overview

Robotic remote control based on human motion via virtual collaboration system: A survey

Research on Optimal Control of Excavator Negative Control System Based on Secondary Controllable Main Valve

Contact Info

Product

Resources

About