With global warming and the energy crisis becoming more serious, the emission regulations
for construction machinery (CM) are increasingly strict. The pure electric drive system is an …

The subject of this paper is the review of advanced technology used in hydraulic systems.
The technology in question is termed Independent Metering (IM); this is used in hydraulically …

Hydraulic excavator driven by an internal-combustion engine is widely used in the
construction field. However, some problems, such as high pollutant emissions, noise and …

The rapid industrial development in the fields, such as robotics and high-tech manufacturing,
has put forward much higher requirements for the application of high-performance …

This article proposes an integrated two-loop motion control strategy of an electro-hydraulic
actuator, in which the cylinder actuator is driven by a variable speed pump to track a desired …

Generally, the valve controlled electro-hydraulic systems are able to achieve high motion
tracking precision, but suffer from large amount of throttling losses. As an alternative …

This paper proposes a new hydraulic excavator boom driving system using novel
asymmetric pump to reduce energy consumption. Due to large throttling loss and …

Mobile machinery energy efficiency and emission pollution are the national and worldwide
issues. This paper contributes in solving these problems by applying a speed variable …

Independent metering valve control system can overcome the shortcomings of the traditional
four-side linkage valve controlled system, such as poor controllability and large energy …

In hydraulic area, independent metering control (IMC) technology is an effective approach to
improve system efficiency and control flexibility. In addition, digital hydraulic technology …