Design and testing of an innovative electro-hydraulic actuator for a semi-active differential

Pulcinelli, Andrea; Pugi, Luca; Vinattieri, Francesco; Capitani, Renzo; Annicchiarico, Claudio

doi:10.1177/0954407017729619

Cited by 15 publications

(9 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ongoing prosecution of this work is the design of a possible embodiment of proposed solution including a verification of possible interferences and a complete dynamic simulation of the system including control and actuation features. Once inertial and geometric properties of adopted components are completely known, also a more detailed modeling of actuation system including as example an electric or electro-hydraulic unit (Pulcinelli et al, 2018). This detailed model will be used also to obtain a preliminary foreseen of required power respect to realistic work cycles as proposed by Valigi et al (2019).…”

Section: Discussionmentioning

confidence: 99%

New mechanism for press-fit processes: preliminary analysis

Fiorineschi

Pugi

Rotini

2021

WJE

Self Cite

View full text Add to dashboard Cite

Purpose The purpose of this paper is to present an alternative solution for press-fit technology processes, which could improve the precision of the positioning movements and the stiffness of the structural elements. Design/methodology/approach A concept is presented and the related kinematics is described. Then, preliminary embodiment evaluations have been performed in terms of kinematics, force control and load distribution on the main structural elements. Findings Thanks to the additional leg, the proposed solution allows a preload that is capable of compensating the backlash of joints. The particular structure with four extendible legs and eight cardan joints ensures the parallelism between the ground and the plate holding the end effector, without any need of additional controls. However, it implies that the legs are not subjected to pure tension–compression stresses. Research limitations/implications This work is focused on the conceptual phase of the design process, with only preliminary embodiment analysis that paves the way for subsequent and more detailed design steps. Especially concerning the actual stiffness of the system, comprehensive evaluations could be performed only after the identification of the particular parts/devices used to implement the main functional elements. Originality/value To the best of the authors’ knowledge, this is the first research work that comprehensively describes and analyzes the considered kinematics, within a real industrial application context.

show abstract

Section: Discussionmentioning

confidence: 99%

New mechanism for press-fit processes: preliminary analysis

Fiorineschi

Pugi

Rotini

2021

WJE

Self Cite

View full text Add to dashboard Cite

show abstract

“…Its effect is enormous. e hydraulic actuator can be considered as a semi-active control system [18].…”

Section: Half-dynamics Model With Hydraulic Cylindermentioning

confidence: 99%

Enhancing the Stability and Safety of Vehicle When Steering by Using the Active Stabilizer Bar

Nguyen

et al. 2022

Mathematical Problems in Engineering

View full text Add to dashboard Cite

Centrifugal force is what causes the vehicle to roll over. This force is generated when the vehicle suddenly changes direction when moving at high speed. The solution of using a stabilizer bar is suggested to minimize this phenomenon. There are currently three types of stabilizer bars in use: mechanical stabilizer bars, hydraulic stabilizer bars, and electronic stabilizer bars. The content of this article is aimed at introducing and reviewing the characteristics of the stabilizer bar. Besides, two oscillation simulation models of vehicles equipped with stabilizer bars are also analysed in this article. Additionally, the characteristics of the control algorithms for the stabilizer bar are clearly analysed. The half-dynamics model is suitable for algorithms that need to use oscillatory state matrices such as SMC, LQR, and LQG. The spatial dynamics model is suitable for some algorithms such as PID, fuzzy, and neural. The roll angle of the vehicle has been significantly improved when the stabilizer bar is fitted. In general, the stability and safety of the vehicle can be guaranteed if the vehicle uses a stabilizer bar.

show abstract

“…In particular the use of an helicoidal coupling assures a very high reduction ratio which is quite useful for the proposed application which is fundamentally a position control were applied forces have to be limited (through a dedicated sensing device) but not really controlled since recorded insertion forces of electric components should be variable depending on tolerances of assembled components. Also exerted forces should be quite lower respect to foreseen maximum ones and this is a further reason to discard direct drive solutions [5][6][7] or electro-hydraulic actuators [8] for which authors have gained considerable experience in past research activities; in this case all this solutions should be extremely less efficient, more expensive and difficult to be controlled especially at partial loads.…”

Section: Machine Head Redesign 21 Actuation Of Machine Headmentioning

confidence: 99%

Design Optimization of a Cartesian Assembly Cell

Peruzzi

Pugi

Berzi

2020

Mechanisms and Machine Science

Self Cite

View full text Add to dashboard Cite

Cartesian Manipulators are still widely used in many application sectors, due to their relatively simple construction and easy controllability. In this work authors present a study concerning the revamping of an existing manipulator, in which it's shown how an integrated mechatronic design affecting structure, actuation and drive system can produce an important increase in terms of performance with near to null costs. Existing manipulator is revamped in order to obtain a higher stiffness respect to static loads, higher accelerations and reduced working cycles with a attention to the assembly of electronic components using a conventional THT (Through Hole Technology) approach or more innovative solutions such as the so called "Press Fit" systems in which higher insertion forces are required. To further improve productivity of the machine, an innovative multi-tool head is introduced.

show abstract

Design and testing of an innovative electro-hydraulic actuator for a semi-active differential

Cited by 15 publications

References 29 publications

New mechanism for press-fit processes: preliminary analysis

New mechanism for press-fit processes: preliminary analysis

Enhancing the Stability and Safety of Vehicle When Steering by Using the Active Stabilizer Bar

Design Optimization of a Cartesian Assembly Cell

Contact Info

Product

Resources

About