Energy-efficient motion control of a hydraulic manipulator

Mattila, Jouni; Virvalo, Tapio

doi:10.1109/robot.2000.846483

Cited by 39 publications

(35 citation statements)

References 5 publications

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“…Since the supply pressure, the flow coefficient of the valve and the cushioning factor are experimental data, one can observe that the dynamic model employed describes satisfactorily the behavior of the pressures in the hydraulic cylinder chambers. The results obtained have a maximum error of 10%, being consistent with those previously reported for theoretical-experimental studies in the hydraulic field as, for example, in SOHL andBOBROW (1999) andMATTILA andVIRVALO (2000). The behavior of the cylinder speed against the displacement is presented in Fig.…”

Section: Analysis With the Original Cushioning Devicesupporting

confidence: 89%

Modeling and analysis of an auto-adjustable stroke end cushioning device for hydraulic cylinders

Schwartz¹,

Negri²,

Climaco³

2005

J. Braz. Soc. Mech. Sci. & Eng.

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Section: Analysis With the Original Cushioning Devicesupporting

confidence: 89%

Modeling and analysis of an auto-adjustable stroke end cushioning device for hydraulic cylinders

Schwartz¹,

Negri²,

Climaco³

2005

J. Braz. Soc. Mech. Sci. & Eng.

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“…As a result, a hardware layout with two 3/3-valves is obtained. These circuit variants are preferred in [11], [4], [27], and [5]. Pressure sensors are used for controlling the main valve [14], [15].…”

Section: State Of the Artmentioning

confidence: 99%

Structural design of independent metering control systems

Sitte¹,

Weber²

2013

Linköping Electronic Conference Proceedings

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This paper regards to design and examination of electrohydraulic control systems with separate metering edges for mobile applications. Although the idea of individual metering has existed for some time, this promising technology has yet to be applied in field. One reason for the missing prevalence is the lack of understanding regarding the complex control requirements. Furthermore, expected additional expenses regarding components such as valves and transducers hinder the acceptance. This work outlines a systematic analysis of possible circuit concepts. The obtained solution space contains a large number of elements that must be evaluated based on functional and economical criteria. Therefore, it is advantageous to divide the control system into its functional fractions. The clear distinction of the functional fractions enables a systematization of the different drive and control tasks, which then can be combined freely. The selection of appropriate control signals can be supported by the usage of a multivariable system modeling approach. Physical interactions, inherent to electrohydraulic systems, have a strong impact on the behavior of the control loops. By analyzing the coupling elements, conclusions regarding control concepts and structures can be drawn.

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“…Hydraulics is one of the widely adopted engineering approaches as it provides high force densities (Burrows, 2005), but its efficiency is often limited by lossy control methods but nowadays we have an opportunity to reduce the power losses by using an efficient electric drive system together with the hydraulic part of a mobile machine (Ahn, 2008;Iannuzzi, 2008). Improving working machines' efficiencies has attracted a lot of attention among researchers and manufacturers all over the world (Yang, 2007;Liang, 2001;Rahmfeld, 2001;Rydberg, 2005;Innoe, 2008;Mattila, 2000). A great number of different types of non-road machines are manufactured for different purposes.…”

Section: Introductionmentioning

confidence: 99%