Search results for "Electro-hydraulic actuator"

showing 2 items of 2 documents

Novel Concept for Electro-Hydrostatic Actuators for Motion Control of Hydraulic Manipulators

2021

Self-contained hydraulic cylinders have gained popularity in the recent years but have not been implemented for high power articulated hydraulic manipulators. This paper presents a novel concept for an electro-hydrostatic actuator applicable to large hydraulic manipulators. The actuator is designed and analyzed to comply with requirements such as load holding, overload handling, and differential flow compensation. The system is analyzed during four quadrant operation to investigate energy efficiency and regenerative capabilities. Numerical simulation is carried out using path control and 2DOF anti-swing of a hydraulic crane as a load case to illustrate a real world scenario. A comparison wi…

TechnologyControl and Optimizationpassive load-holdingComputer scienceEnergy Engineering and Power TechnologyComputerApplications_COMPUTERSINOTHERSYSTEMSServomotorlaw.inventionControl theorylawfour-quadrant operationElectrical and Electronic Engineeringelectro-hydrostatic actuatorEngineering (miscellaneous)Computer simulationRenewable Energy Sustainability and the EnvironmentTpump-controlled cylinderElectro-hydraulic actuatorMotion controlPower (physics)VDP::Teknologi: 500electro-hydrostatic actuator; pump-controlled cylinder; four-quadrant operation; passive load-holding; servomotorHydraulic cylinderservomotorActuatorEnergy (miscellaneous)Efficient energy useEnergies
researchProduct

Discrete Learning Control with Application to Hydraulic Actuators

2015

In this paper the robustness of a class of learning control algorithms to state disturbances, output noise, and errors in initial conditions is studied. We present a simple learning algorithm and exhibit, via a concise proof, bounds on the asymptotic trajectory errors for the learned input and the corresponding state and output trajectories. Furthermore, these bounds are continuous functions of the bounds on the initial condition errors, state disturbance, and output noise, and the bounds are zero in the absence of these disturbances.

Control algorithmComputer scienceElectro-hydraulic actuatorlcsh:QA75.5-76.95Computer Science Applicationslaw.inventionControl and Systems EngineeringlawControl theoryRobustness (computer science)Modeling and SimulationInitial value problemDiscrete learning controllcsh:Electronic computers. Computer scienceActuatorSoftwareHydraulic actuatorsModeling, Identification and Control
researchProduct