Force feedback in hydraulics. The article describes control system of electro hydraulic servo drive with additional force feedback. The structure of magnetorheological rotary brake and research a relation torque from current is presented. The last section forms research results of the electro hydraulic servo drive’s control system with magnetorheological haptic joystick.

Research and modeling of an axial piston pump. The paper presents the modeling problems of an axial piston pump. A mathematical model of the pump was made in this work and computer calculations were realized. The comparing of simulation results and experimental research has been presented.

Usage of fluid power hydraulics on hydraulic structures. The thesis refers to hydraulic system of automatic grate cleaner on dam. Development of equipment on dam and basic elements, as well as general principles of operation and cleaner work cycles has been presented. There are marked out the hydraulic mechanisms: opening and closing of scraper, cleaner travel, lifting and lowering of scraper.

Modeling and testing of new high pressure water hydraulics components. Paper contains results of research on application of high pressure water hydraulics for machine drive and control systems including heavy duty machines. Conclusions from described research on the relief valve could be helpful in future design and introducing of different types of water hydraulic components.

Methods of machines hydrodynamic power transmission system optimization. In the paper methods of optimization of machines with hydrodynamic power transmission system were described. Possibilities of the methods Linja, Monte Carlo and genetic algorithm were presented as well as recommendation of the methods applying.