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Hydraulic Control Systems

Received: 5 June 2016 Abstract Accepted: 7 September 2016 The paper presents a general concept of smart design and production control as key elements for efficient operation of a smart factory. The authors present various techniques that aid the design process of individualized products and organization of their production in the context of realization of the mass customization strategy, which allows a shortened time of development for a new product. Particular attention was paid to integration of additive manufacturing technologies and virtual reality techniques, which are a base of the so-called hybrid prototyping.

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Smart product design and production control for effective mass customization in the Industry 4.0 concept

https://ro.uow.edu.au/cgi/viewcontent.cgi?article=2017&context=eispapers1

Shear thickening fluids in protective applications: A review

New emerging manufacturing paradigms such as cloud manufacturing, IoT enabled manufacturing and service-oriented manufacturing, have brought many advantages to the manufacturing industry and metamorphosis the industrial IT infrastructure. However, all existing paradigms still suffer from the main problem related to centralized industrial network and third part trust operation. In a nutshell, centralized networking has had issues with flexibility, efficiency, availability, and security. Therefore, the main aim of this paper is to present a distributed peer to peer network architecture that improves the security and scalability of the CMfg. The proposed architecture was developed based on blockchain technology, this facilitated the development of a distributed peer to peer network with high security, scalability and a well-structured cloud system. The proposed architecture which was named as the “BCmfg” is made up of five layers namely; resource layer, perception layer, manufacturing layer, infrastructure layer and application layer. In this paper, the concept of its architecture, secure data sharing, and typical characteristic are discussed and investigated as well as the key technologies required for the implementation of this proposed architecture is explained based on demonstrative case study. The proposed architecture is explained based on a case study which contains five service providers and 15 end users with considering 32 OnCloud services. For evaluation purpose, the qualitative and quantitative methods are utilized and the results show that the proposed methodology can bring more advantages to CMfg than the security and scalability.

Toward a blockchain cloud manufacturing system as a peer to peer distributed network platform

A G Gaydon and H G Wolfhard London: Chapman and Hall 1970 pp + 365 price £6 With the rapid expansion of combustion science in and over so many fields in the last decade, it is a relief to learn of a new edition of this well known book. Although the framework of this volume will be reassuringly recognizable to first edition veterans, the contents, which include the extra chapter topics of the second edition, have been thoroughly sifted to bring the frontier information up to date.

https://iopscience.iop.org/article/10.1088/0031-9112/22/3/032/pdf

Flames: Their Structure, Radiation and Temperature

Application of magnetorheological fluid in industrial shock absorbers

This paper deals with the virtual modelling and simulation of a complex CNC machine tool feed drive system. The first phase of the study was the modelling of a very complex structure of the feed drive which consists of many elements (position, velocity and current control regulators, actuators, mechanical transmission elements, etc.). All these elements have great influence on important parameters of the machine tool such as movement stability, positioning accuracy and dynamic stiffness. For the modelling of the system the Matlab-SIMULINK and Matlab-Sim Scape Toolbox software was used. The Matlab-Sim Scape Toolbox allowed us to use the complete CAD model of the geometry of the machine tool, automatically calculating the selected properties. The influence of changing and optimizing several feed drive parameters (position loop gain Kv, proportional gain Kp of the velocity controller, integral gain of velocity controller-Tn, electrical drive time constant Te, total moving mass m, sampling period Ts, etc.) on the positioning accuracy and the dynamic stiffness was simulated, tested and validated. The finished Matlab-Simulink and Sim Scape models were initially visualized in the Matlab program. They were very simplified, comparing with their later visualization in the Virtual Reality EON Studio program.

/pdf/virtual-modelling-and-simulation-of-a-cnc-machine-feed-drive-1kfj7tju97.pdf

Virtual Modelling and Simulation of a CNC Machine Feed Drive System

The development of information technologies, the increasing complexity of the information to be handled and analysed along with the increasing capacities in scientific and engineering simulations call for the development of increasingly powerful visualisation tools and methods. By integrating existing facilities,VISIONAIR is aimed at creating a world-class research infrastructure that will be open to research communities across Europe and around the world for conducting state-of-the-art research.

/pdf/visionair-vision-advanced-infrastructure-for-research-4bafjbu2e9.pdf

VISIONAIR - VISION Advanced Infrastructure for Research

Application of geometry based hysteresis modelling in compensation of hysteresis of piezo bender actuator

This paper presents the design of proportional valve with a Permanent Magnet Synchronous Motor (PMSM). The proposed valve is described, and its history is briefly reviewed. Basic equations describing the valve are formulated and its simulation model is implemented in MATLABSimulink software. Selected nonlinearities are included in this model. In order to determine the basic parameters of the discussed proportional valve, a test stand is built, which enables valve investigations. In this test stand, a valve control system based on programmable logic controller (PLC) with a touch panel and inverter module is implemented and used for investigations. The valve flow characteristics and step responses obtained in simulations are presented. These characteristics are compared with results obtained in experimental investigations. As a result, the valve simulation model is modified and improved.

Andrzej Milecki

Papers

Application of magnetorheological fluid in industrial shock absorbers

Virtual Modelling and Simulation of a CNC Machine Feed Drive System

VISIONAIR - VISION Advanced Infrastructure for Research

Application of geometry based hysteresis modelling in compensation of hysteresis of piezo bender actuator

Modelling of an Electrohydraulic Proportional Valve with a Synchronous Motor