This thesis examines the modelling and control of a hydraulic servo system. Both a theoratical and a practical approach are discussed. The used set-up consists of an one DOF hydraulic system with an electronically controlled servo valve. A nonlinear parametric model of the system, several fitted linear black box models as well as a LPV model combining these fits are determined. The models are v...

• Non-linear dynamics modelling description for simulating the behaviour of forestry cranes 2014 • Modeling an industrial flotation process: A case study at the mining company Boliden AB 2012 • Modeling dynamics of an electro-hydraulic servo actuated manipulator: A case study of a forestry forwarder crane 2012 • Underactuated mechanical systems: Contributions to trajectory planning, analysis, a...

At present most of the design of textbooks and materials are used to stabilize the bode diagram of hydraulic servo control system to determine the stability of; In this paper, using MATLAB to describe the open-loop transfer function, combined with extreme pzmap to analyze the distribution of its open-loop system nyquist maps, and time-domain analysis and comparison of the graphics, graphics, in...

Abstract: This paper is to develop an optimal electro-hydraulic dual-shaking table system with high waveform replication precision. The parameters of hydraulic cylinders, servo valves, hydraulic supply power and gravity balance system are designed and optimized in detail. To improve synchronization and tracking control precision, a hybrid control strategy is proposed. The cross-coupled control ...

As the aviation industry evolves toward next-generation fly-by-wire vehicles, hydraulic actuators are being replaced with their electro-mechanical actuator (EMA) counterparts. By eliminating fluid leakage problems while reducing weight and enhancing vehicle control, the feasibility of EMAs in avionic applications has been established. However, due to the inherent nature of electronic components...