In an electro-hydraulic servo system, the system flow is used as intermediate variable to control output displacement/force/speed of actuator, and it plays role a medium for energy transmission conversion. Therefore, essence state actuator. The purpose this paper study non-linear characteristics pump pave way high-performance system. Based on partition idea, divided into dead zone, load saturat...

This paper describes an agricultural vehicle modified to serve as a research platform for agricultural engineering. A tractor was equipped with a global positioning receiver, inertial/GPS system, geomagnetic direction sensor, and a monochrome camera for local and global sensing. For steering control, the tractor was equipped with an electro-hydraulic proportional steering valve, PWM coil valve ...

In Part I of this paper, fuzzy modeling showed its potential to describe the behavior of the electro-hydraulic system. To verify the possibilities of its application for the system’s learning control, two inverse-model compensation schemes were implemented. This paper describes and discusses the experimental results obtained, showing the feasibility and effectiveness of the learning controllers...

In this paper, a robust adaptive backstepping-based controller is developed for positioning the spool valve of Electro-Hydraulic Servo System (EHSS) with parameter fluctuations. Artificial Bee Colony (ABC) algorithm is utilized to drive the parameters of the proposed controller to a good neighborhood in the solution space. The optimization problem is formulated such that both the tracking error...

Renal arteriovenous fistula (rAVF) is an uncommon condition, usually iatrogenic and in most cases caused by percutaneous renal needle biopsy. This is a report of rAVF following flexible ureteroscopic electro-hydraulic lithotripsy of a lower pole renal calculus and its subsequent management. A high index of suspicion is required for the diagnosis of this rare complication, which is easily treate...