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Welding is an important operation in manufacturing processes and it can represent a highly relevant amount of production costs, depending on material workpieces and required weld quantity. In mechanised and robotised welding processes, robot's travel velocity is an important parameter, which requires a proper regulation to obtain a good quality for weld beam. Then, in this work, a nonlinear model...
This paper introduces a manipulator-position control procedure for which the Kinect sensor is used with 3D-modeling data. The system consists of the Manipulator Control software and the Kinect sensing software. The Manipulator Control software is used to control the AT2, an industrial 6-DOF manipulator. The Kinect sensing software is used to obtain the positional data of the object whose 3D-model...
To satisfy the requirements of complex distributed power electronic system (PES) communication, this paper has proposed a single optic-fiber link data communication protocol based on the Manchester code due to an vacancy in the commonly-adopted protocols, analyzed the encoding and decoding principle of Manchester code, defined the formats of command frame and data frame, calculated the communication...
In this paper, we report on a method of finding lot defects and the results of a verification related to the maintenance of power-supply and air-conditioning equipment for ICT. We built a logic and models to automatically detect equipment that may be included in a defective lot. An equipment anomaly analysis system was constructed. For verification, actual past lot failure equipment was applied to...
This paper is concerned with the stochastic stabilization problem of observer-based output feedback control for sampled-data system. Different from most previous studies, we assume stochastic sampling and packet dropout may occur simultaneously. The packet dropouts lost in both the sensor-controller (S/C) and controller-actuator (C/A) channels are modelled by two mutually independent stochastic variables...
Off-highway dump truck contains amounts of potential energy and kinetic energy. During the braking process, these two parts are consumed in the form of heat on the braking resistance, and the energy consumption will be about 24 percent of total energy consumption of the Truck. Hence, it is necessary to recover the braking energy. This paper, aiming at the characteristics of electric drive system in...
This paper provides comparative control study of PMSG wind turbine connected to DC load through a DC/DC converter in order to improve the impact on the power system and optimize the power production. The maximum power point tracking (MPPT) algorithms analyzed and compared are: A conventional proportional-integral controller (PI) and two based fuzzy logic controllers (Fuzzy-PI and Adaptive FLC-PI)...
A design of a feed-forward-based fractional-order model reference adaptive control (FO-MRAC) compensator using a modified MIT rule to control a DC-DC boost converter is presented in this work. As the plant is non-minimum phase, an implementation of the so-called parallel feed-forward configuration is required to make the plant satisfy ASPR (almost strictly positive real) conditions that in turn, allows...
In this paper we describe the stages needed to achieve an autonomous stable platform with quadrotor architecture. Based on a commercial frame, we first design and integrate the instrumentation. An Inertial Measurement Unit (IMU), which also has a barometer, is added to the platform and accurately calibrated. The sensor fusion and signal filtering are done based on an Extended Kalman Filter (EKF)....
Dynamic Voltage Restorer (DVR), as a device of voltage sag compensation, demands fast transient response, and the disturbance of source voltage is a main impact on control performance. The DVR control strategy based on discrete state space will enhance control bandwidth and stability. However, for the discrete space control system, the number of parameters is relatively more which will lead to a complicated...
This paper present an optimal photovoltaic-hydrogen standalone power system using gray wolf optimizer technique. The system composed of photovoltaic generator and a hydrogen production system. Electrical power from solar conversion meets the user loads and the surplus used for water electrolysis to produce hydrogen. Control system is ensured via feed bucks control loops. MPP Tracking regulates with...
This paper describes a PV system supplying a large scale interconnected grid. A PV array is connected to AC grid via a DC-DC boost converter and a three-phase three-level Voltage Source Converter (VSC). Maximum Power Point Tracking (MPPT) is implemented in the boost converter by means of a Simulink model using sliding mode controller by switching the duty cycle of the boost converter. A three phase...
This paper investigates the deployment of an SDN-based UAV network providing communication service. Such a network is extremely useful in emergency scenarios. In such a network, the mobility of UAVs is minimal. We consider the placement of the SDN controller and its implications in terms of communication overhead and end-to-end delay of the control packets exchanged between the UAVs and the controller...
This paper presents signaling architecture models and protocol procedures for SDN-based wireless access networks with Media Independent Management (MIM) capabilities. Three models are described for the framework of SDN and MIM controls, which are decoupled interworking, loosely-coupled integration, and tightly-coupled integration between SDN and MIM controls.
Cyber-physical systems (CPS) are interconnections of heterogeneous hardware and software components (e.g., sensors, actuators, physical systems/processes, computational nodes and controllers, and communication subsystems). Increasing network connectivity of CPS computational nodes facilitates maintenance and on-demand reprogrammability and reduces operator workload. However, such increasing connectivity...
Designing of an effective and an efficient Fractional Order Proportional-Integral-Derivative (FOPID) controller, as a generalization of a conventional PID controller based on fractional order calculus, for an industrial control plant to obtain high-quality performances is of great theoretical and practical significance. This paper presents a new method for optimum tuning of practical FOPID controllers...
The paper investigates the pulsed AMF arc control on the vacuum arc and the post arc characteristic to reveal the mechanism of AMF arc control in different control time and find the proper AMF arc control. The pulsed AMF control system is designed and the pulse width is adjusting from 1.5ms to 10ms. The test circuit is set up in the synthetic test and the test VI is transparency in order to observe...
In small-signal stability studies, various stability criteria have been proposed based on impedance or admittance norms to assess the stability of power systems. Controlling these norms can drag a system from a stable to an unstable operating condition. Therefore, finding a control variable that has a direct linear relation with these norms will facilitate the utilisation of data-driven control principles...
Aiming at the power quality problems such as voltage sag caused by grid connection of distributed generation, this paper presents a new control scheme based on Buck-Boost transform circuit. Pulse width modulation control and adaptive closed-loop voltage feedback control are applied to the voltage on the contactor coil. The working principle and process of the system are introduced in detail and the...
This article presents an approach to use fuzzy logic multi-agents for standalone system E.M.S, in the sense of renewable energy environment. The multi-agent approach is useful to be adapted in a system of hybrid energy particularly in the field of renewable energy; however managing the energy in such a scheme is likely to be complicated in the perspective of a central controller. Consequently to have...
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