Essays about: "Accumulators"

Showing result 1 - 5 of 18 essays containing the word Accumulators.

  1. 1. The design of a hydraulic equalizer bar for the feeding mechanism on forest harvester heads

    University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Author : Arvid Söderlund; [2023]
    Keywords : Harvester; Harvester head; Komatsu Forest; Hydraulics; Equalizer bar; Parallellstag; Stag; Skogsmaskin; Skördare; Aggregat; Skog;

    Abstract : Due to the importance of a correct tree placement and the wear that occurs to equalizer bars inharvester heads, Komatsu Forest AB in Umeå was interested if the bar could be replaced with ahydraulic system. According to Komatsu, the problems were that the equalizer bars that are responsible forsynchronizing the delimbing knives and feeding mechanism add weight, take up space and have atendency to break before their life expectancy. READ MORE

  3. 2. Zero-Knowledge Set Membership Proofs Using Bilinear-Map Accumulators

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Hannes Lindström; [2020]
    Keywords : ;

    Abstract : The development and research of privacy mechanisms has become increasinglyimportant to different types of organizations which act as a central partyin multi-party data flows. A set membership proof in zero knowledge (ZKSMproof) is an example of such a privacy mechanism which can be applied inmultiple types of systems. READ MORE

  4. 3. Context-Based Authentication and Lightweight Group Key Establishment Protocol for IoT Devices

    University essay from Mittuniversitetet/Institutionen för informationssystem och –teknologi

    Author : Nico Ferrari; [2019]
    Keywords : Internet of Things; Context-based authentication; Fuzzy commitment scheme; Cryptographic key establishment; Lightweight cryptography; Contiki; One-way accumulators;

    Abstract : The concept of the Internet of Things is driven by advancements of the Internet with the interconnection of heterogeneous smart objects using different networking and communication technologies. With the rapidly increasing number of interconnected devices present in the life of a person, providing authentication and secure communication between them is considered a key challenge. READ MORE

  5. 4. Energy Management of Parallel Hydraulic Hybrid Wheel Loader

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Hoang Thai Do; [2018]
    Keywords : ;

    Abstract : Hybridization of driveline system is one possible solution to increase fuel eciency.In this thesis a parallel hybrid hydraulic wheel loader concept was studied. A highpressure accumulator was added to the system and acted as a second source of energy. READ MORE

  6. 5. Design of a Dynamic Boom Suspension System in a Hybrid Wheel Loader

    University essay from Mälardalens högskola/Akademin för innovation, design och teknik

    Author : Ayoub Ayoub; Carl Martin Berg; [2018]
    Keywords : Wheel loaders; passive damming; active damping; dynamic damping; PID controllers; vibrations; hydraulics.;

    Abstract : Wheel loaders are under the influence of low frequency vibrations that may be harmful for the health of the operator, and for the productivity of the machine. The strong vibrations can significantly impact the operation of the machine since they are not equipped with wheel suspension systems and due to their work environment in rough terrains with uneven surfaces. READ MORE