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This study describes some possibilities of setting up an adaptive control method for an electromagnetically actuated presser-foot in an industrial high-speed sewing machine. The control of fabrics feeding in sewing machines is difficult not only because of the complexity of relations between the intervening variables (material properties, sewing speed), but also because in many operations a varying...
This paper proposes an active steering method using adaptive sliding mode control to estimate the upper bounds of time-derived hyperplane and uncertainties of lateral forces. This is achieved by utilizing a state-dependent switching function based on state-dependent Riccati equation (SDRE) for the four-wheel-steering vehicle; it takes lateral force saturation characteristics into account. Our proposed...
A robust controller design method for high-maneuverable kinetic kill vehicle (KKV) whose attitude is controlled by combining aerodynamic tail fins and direct force is presented in this paper, which is a new algorithm based on adaptive approximation variable structure control (AAVSC) theory. Using this approach chatting problem which is due to the presence of infinite frequency switching function can...
This contribution introduces a generic framework for sensor-based robot motion control. The key contribution is the introduction of an adaptive selection matrix for sensor-based hybrid switched-system control. The overall control system consists of multiple sensors and open- and closed-loop controllers, in-between which the adaptive selection matrix can switch discretely in order to supply command...
The undue chattering effect is the major disadvantage of conventional sliding mode controllers. In this study, based on the advantage of RBF neural network control method, a new adaptive sliding mode control method, which is one of the active control algorithms, has been applied for seismically-excited building structures. The undue chattering effect, the major disadvantage of conventional sliding...
Its primary purpose of this study is to provide a comprehensive investigation on the controllability of a magnetorheological (MR) gun recoil damper. Performances of MR damper under random load, mainly in the transportation applications, seismic protection in civil engineering and wind-rain-induced load in cable bridge, have been well investigated by many researchers. However, little research has been...
Many power-assist systems for industrial uses possess simple power-assisting function only. The authors studied on the positioning method of a cart using a smooth switching from the servo access control for the conveyance function to the force sensorless impedance control (FSLIC) for the power-assisting function. The nonstationary optimal control method and the nonstationary impedance control law...
In this paper, we introduce a pricing model that ensures efficient resource allocation that provides guaranteed quality of service while maximizing profit in multiservice networks. Specifically, a dynamic allocation policy is examined that relies on online measurements while each service class operates under a probabilistic bound delay constraint. We present a rigorous analysis of the properties of...
Model-free control of unidentified systems with unstable equilibriums results in serious problems. In order to surmount these difficulties, firstly an existing model-based controller is used as a mentor for emotional-learning controller. This learning phase prepares the controller to behave like the mentor, while prevents any instability. Next, the controller is softly switched from model based to...
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