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Constant torque control in machining processes reduces the cycling time and energy consumption, while protecting the machine tool and cutting tool at the same time. This paper presents an adaptive fuzzy control system for optimizing the cutting torque in gear hobbing process. And during the machining process, the input and output scaling factors of the fuzzy controller can also be adjusted automatically...
In the dynamic test system of PMSM, the tested machine, dynamic torque meter and load machine are connected in a coaxial rotating machinery by two couplings. More than 70% of mechanical faults are caused by misalignment. The frequency response of parallel misalignment in a PMSM test bench was studied in this paper. A motion equation of shafting based on Lagrange method is established. The frequency...
The paper investigates region tracking control for Autonomous Underwater Vehicles (AUVs). A novel region tracking controller is proposed to drive AUV's position tracking error in each instant into the predefined sphere region. It is realized by constructing a continuous and differentiable piecewise function firstly, and then by designing a virtual variable based on Euclidean norm and fractional power...
The computer network Attack and Defense is the important combat activity to get the information superiority in modern and future battlefields. In this paper, we try to apply the Lanchester equation of military confrontation to examine the network attack and defense. First, the network combat concerns are divided into two types according to their combat features, i.e. the point and area attack or defense;...
Hidden coal gas fire spontaneous combustion troubles are one of the greatest threats to the coal safety production due to the gas explosion. In this paper, a novel method of prediction the hidden fire source is presented by means of choosing the concentration of CO gas as the indicator to detect the hidden coal gas fire location because CO gas is first reach the alarm threshold in the process of coal...
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