Analysis on Response of Magnetic Bearing System to External Forces Comparison between Optimal Regulator System and Independently Controlled System Takeshi MIZUNO, Toshiro HIGUCHI and Noboru AIKAWA One of the significant problems in designing a magnetic bearing control system is that there are gyroscopic couplings between two rotational motions of the suspended rotor. Because of these couplings ...

Abstract The traction motor is the power source of locomotive. If surface waviness occurs on races bearing, it will cause abnormal vibration and noise, accelerate fatigue wear, seriously affect stability safety transmission. In this paper, an excitation model coupling time-varying displacement contact stiffness excitations adopted to investigate effect bearing under from locomotive-track couple...

Compared with the amount of research undertaken on vertical-bearing piles in karst areas, there are fewer studies stability horizontal-bearing (e.g., anti-slide and supporting piles), little way theoretical developments. In order to study influence cave front under pile anti slide pile, this designs orthogonal test, carries out numerical simulation by using ABAQUS finite element analysis softwa...

the existence of some geometrically imperfect members, like initial curvature in a double layer space structures with hundreds or thousands of members is almost inevitable. these imperfections give rise to loss of load bearing capacity of double layer space structures. to evaluate the effect of initial member imperfection on load bearing capacity of double layer space structures and their failu...

The article compares the indicators of experimental and calculated bearing capacity bored piles installed using DDS technology, according to static tests normative calculations. also presents results compression soil samples around placed Drilled Displacement System (DDS) method. authors established dependence deformation properties soil, such as modulus deformation, angle internal friction adh...

Cargo-bearing Unmanned aerial vehicles (UAVs) have tremendous potential to assist humans in food, medicine, and supply deliveries. For time-critical cargo delivery tasks, UAVs need to be able to navigate their environments and deliver suspended payloads with bounded load displacement. As a constraint balancing task for joint UAV-suspended load system dynamics, this task poses a challenge. This ...

Thermic aromatic nucleophilic displacement of the methoxy group at C-6 of (+/-)-1-oxo-2-hydroxy-1,2-dihydroacronycine (2) by an amine is a reaction that gives a facile entry to acronycine derivatives bearing an amino substituent at this position. The introduction of the amino substituents was confirmed with a long-range 1H-15N correlation NMR spectrum at natural abundance. Under basic condition...