Photovoltaic generation has grown with continuous developments that allow new functionalities such as power factor correction or multilevel voltage generation. However, the increment in the complexity of control algor...
详细信息
ISBN:
(纸本)9781665400299
Photovoltaic generation has grown with continuous developments that allow new functionalities such as power factor correction or multilevel voltage generation. However, the increment in the complexity of control algorithms requires expensive digital systems for their correct implementation. therefore, this paper presents a new simplified reactive power control technique based on the d-q rotating frame theory allowing power factor correction by injecting phase-shifted or in-phase current to the power grid from photovoltaic arrays. Furthermore, the high conversion efficiency rate result is due to the use of an MPPT algorithm. Finally, the proposed simplified reactive power control was constructed to be used in a 7-level H-bridge power inverter. Simulated results of the proposed simplified control scheme verify low-thD in the current and a high-performance during active or reactive power injection into the single-phase electrical grid.
this paper presents a task-space robot controller composed of two nested loops. the inner loop corresponds to a Proportional Derivative joint controller and the outer loop consists of a Proportional Integral controlle...
详细信息
ISBN:
(纸本)9781424424986
this paper presents a task-space robot controller composed of two nested loops. the inner loop corresponds to a Proportional Derivative joint controller and the outer loop consists of a Proportional Integral controller fed by task space measurements. Stability is studied by means of the Lyapunov method and a visual servoing application is considered for experimentally assessing the performance of the proposed controller.
In this paper, a formation control method for two non-holonomic mobile robots is presented. the mobile robot formation achieved the goal while avoiding the obstacles. the control algorithm presented consists in 1) avo...
详细信息
ISBN:
(纸本)9781665400299
In this paper, a formation control method for two non-holonomic mobile robots is presented. the mobile robot formation achieved the goal while avoiding the obstacles. the control algorithm presented consists in 1) avoiding the obstacles using potential forces by the artificial potential field methodology and 2) the leader-follower technique for the formation approach. In the proposed methods, the leader of the formation plans the path applying the potential field algorithm and the follower maintains a desired distance and a desired bearing angle with respect to the leader. Moreover, the proposed algorithm avoid the local minimum problem in the formation, implying the leader will reach the goal without having to stop due to the equal forces of attraction and repulsion. the stability of the tracking problem was described using a Lyapunov function to validate the proposed method. Simulations results were showed in order to verify the theoretical method.
this paper, after a general introduction to the area, discusses the architecture and learning algorithms that permit automatic parallel, distributed lookahead to emerge in classifier systems. Simple additions to a “s...
this paper, after a general introduction to the area, discusses the architecture and learning algorithms that permit automatic parallel, distributed lookahead to emerge in classifier systems. Simple additions to a “standard” classifier system suffice, principally a new register called the virtual strength register , and a provision to use the bucket brigade credit assignment algorithm in “virtual” mode to modify values in this register. Withthese additions, current actions are decided on the basis of the expected values associated withthe “lookahead cones” of possible alternatives.
the proposed algorithm in this research paper leads to an approach through which the input-output controllability of a plant model can be predicted successfully beforehand if it is scaled efficiently according to a no...
详细信息
ISBN:
(纸本)9781665400299
the proposed algorithm in this research paper leads to an approach through which the input-output controllability of a plant model can be predicted successfully beforehand if it is scaled efficiently according to a normalized behavior. In the industrial applications, it is extremely important to make sure that the inputs and outputs of a plant model are realizable not only withthe limitations imposed mostly by the system's devices but also by its circuitry and programming. the motivation behind choosing this method is that the classical control fails to precisely assess the systems. the goal is to extract a threshold value based on the controllability Gramian characteristic. According to a defined controllability criterion, any value which would be less than the proposed threshold value would translate into the fact that the plant is not practically controllable. the Glover-McFarlane loop shaping technique is implemented for a multitude of multi-input multi-output systems.
the robust stabilization of the angular position of a spacecraft with dynamic elastic elements under dissipative properties is proposed. the control scheme is based on bang-bang control and linear output feedback. the...
详细信息
ISBN:
(纸本)9781424424986
the robust stabilization of the angular position of a spacecraft with dynamic elastic elements under dissipative properties is proposed. the control scheme is based on bang-bang control and linear output feedback. the former is based on minimum-time optimal control and the latter is designed withthe invariant ellipsoid method. the control is achieved under uncertainty in the system and disturbances in the output measurements.
Here we present two numerical procedures for the identification of Hamiltonian systems, applying the Lagragian and Hamiltonian formalism. the property of First Integrals and their characteristics are used to treats th...
详细信息
ISBN:
(纸本)9781538670330
Here we present two numerical procedures for the identification of Hamiltonian systems, applying the Lagragian and Hamiltonian formalism. the property of First Integrals and their characteristics are used to treats the identification as stabilization. the derivative of first integrals is realized by a super-twist differentiator. the convergence of this numerical procedure and its implementation for two dimensional models are presented.
the primary goal of this research report is to investigate the challenging topic of flight dynamics control-regulation over a quadrotor UAV9;s orientation (attitude) in the presence of wind disturbances and unmodel...
详细信息
ISBN:
(纸本)9781665400299
the primary goal of this research report is to investigate the challenging topic of flight dynamics control-regulation over a quadrotor UAV's orientation (attitude) in the presence of wind disturbances and unmodeled dynamics. To do this, we first create a viable output feedback controller-regulator that incorporates Filters High Gain Observers (FHGO) of ultimate generation, feedback and Radial Basis Function Neural Network (RBF) compensation of estimated disturbances. Furthermore, the usage of reliable sliding mode controllers. then, despite wind dynamics, noise in sensor outputs, velocity estimates, and common modeling mistakes, a quadrotor UAV is maintained at a given orientation utilizing such a controller. Finally, the effectiveness of the suggested controller is investigated in a simulation framework using a realistic physical model of a quadrotor UAV.
In this work, a robust control strategy is proposed to achieve attitude stabilization of an non-inertial Pendulum-Acrobot system. Modeling of this system will be presented through the classical Euler-Lagrange method a...
详细信息
ISBN:
(纸本)9781538670330
In this work, a robust control strategy is proposed to achieve attitude stabilization of an non-inertial Pendulum-Acrobot system. Modeling of this system will be presented through the classical Euler-Lagrange method and a robust controller design based on the Super-Twisting algorithm in order to stabilize the acrobot position under a non-inertial framework. Finally, the implementation of the proposed control design scheme is carried out by numerical simulation.
this paper presents a methodology for closed-loop identification of velocity controlled servomotors. the approach considers a PI controller applied simultaneously to the real servomotor and its model. It is shown that...
详细信息
ISBN:
(纸本)9781424424986
this paper presents a methodology for closed-loop identification of velocity controlled servomotors. the approach considers a PI controller applied simultaneously to the real servomotor and its model. It is shown that under persistently exciting conditions the parameter estimates converges. Experimental results using a laboratory test bed validate the proposed approach.
暂无评论