In this paper, a novel model-based impedance controller for a 6-degree-of-freedom (dof) electrohydraulic Stewart platform mechanism is developed. Rigid body and experimentally developed electrohydraulic models, including servovalve, friction and leakage models are employed and described by a set of integrated system equations. Despite the fact that an electrohydraulic servoactuator is not a sou...

Electrohydraulic actuation systems offer definative position control and an energy-efficient solution. Such are widely used in mobile machinery, robotics, various stationary systems. Achieving good of actuator the variable displacement electrohydraulic system by open loop is objective this study. For square (reference position) control, amplitude taken as 0.1 m, at 0.05, 0.15 0.25 Hertz frequen...

This paper presents the design of an indirect adaptive feedback linearization (FBL)based control using dynamic neural networks (DNN) for full-car nonlinear electrohydraulic suspensions. Particle swarm optimization (PSO) algorithm is used in training the DNN to learn the dynamics of the system. A multi-loop, PSO-optimized proportional-integral-derivative (PID) control is implemented for the feed...

introduction the main goal of this study was to perform quality control test on all radiography units operating in golestan province of iran. materials and methods forty-four x-ray units were examined based on general accepted programs for quality control. eight parameters including kvp accuracy, kvp reproducibility, ma-time reciprocity, exposure linearity, exposure reproducibility, timer accur...

Výskum vlastností hydrostatickej transmisie regulovanej rôznymi regulátormi In this paper the possibility of a uses control system with a signal processor DSP to control hydrostatic transmission was described. A hydrostatic transmission with pump variable efficiency and engine radial with constant working absorptivity was chosen. The control of the efficiency of pump was realized by using the e...

The paper deals with the design and tuning of the PID controller for the closed loop control of the system with modes of different dynamics and different damping. The influence of the chosen controller on the properties of the controlled system is shown using the critical gain and step responses. The use of the presented rules is demonstrated on the tuning of the controller for the position con...