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A supporting system-frame beam with pre-stressed anchor is widely applied to the reinforcement of slope. The force mechanism of frame beam is the priority among priorities in the system design work, since it plays an important role in the system. Based on the actual project cases, we compare the data measured in these cases and the results of the different methods of calculating on the internal force...
It frequently generates vibration in machining, which interferences and disruptions normal cutting process, worsens the machining accuracy and the surface quality and lessens productiveness. The generation of vibration is related to the dynamic characteristics of process systems consisting of machine tools, fixtures, tool and workpiece. It detailed analyzes the main vibration types in turning processing,...
Using three-phase permanent magnet AC motor (PM motor) as drive part of electric vehicle (EV), the motor must achieve zero speed braking when the vehicle brakes to stop on the slope. Braking force and motor rotation have the same direction when the vehicle is braking in the downhill; and the direction are opposite when braking in the uphill. Therefore, the general control strategy for PM motor cannot...
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