The aim of this paper is to design a Fractional Order Sliding Mode Controllers (FOSMC)for a class of DC-DC converters such as boost and buck converters. Firstly, the control lawis designed with respect to the properties of fractional calculus, the design yields an equiv-alent control term with an addition of discontinuous (attractive) control law. Secondly, themathematical proof of the stabilit...

In this paper, a robust Maximum Power Point Tracking (MPPT) for PV array has been proposed using sliding mode control by defining a new formulation for sliding surface which is based on increment conductance (INC) method. The stability and robustness of the proposed controller are investigated to load variations and environment changes. Three different types of DC-DC converter are used in Maxim...

Lattice beam and prestressed anchor rod are used to enhance stability prevent failure of soil or rock slopes. In this study, a model (LBPAR) system was designed with reinforcement mechanisms test constructed circular slip surface loess slope. First, interaction between the slope LBPAR investigated by an analysis model. Stability sliding mass from bed arc-shaped then studied experimental designe...

The effects of applied load, sliding speed and sliding distance on the dry sliding wear behavior of aged Al-SiCp-Gr composites were investigated. The specimen were fabricated by stir-casting technique. The pin-on-disc wear testing machine was used to investigate the wear rate by design of experiments based on L27 using Taguchi technique. Sliding distance was the most important variable that inf...

Rock slopes have the characteristics of complex geological conditions, weak structural surface development, steep slope, and great damage. In this study, Sujiaba overpass slope in Chongqing was selected as evaluation object, main stability methods rock were analyzed. Combined with special conditions geographical location through a survey, qualitatively analyzed based on stereographic projection...