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- 2018
- Solar Photovoltaic (SPV)
- Fuzzy Logic Control (FLC)
- MATLAB/Simulink
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- Variable Step Size Incremental Conductance (VSS InC)
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- Electrical Engineering and Automation
- Cochin University College of Engineering
- T.K.M College of Engineering
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[IEEE 2018 OCEANS - MTS/IEEE Kobe Techno-Ocean (OTO) - Kobe, Japan (2018.5.28-2018.5.31)] 2018 OCEANS - MTS/IEEE Kobe Techno-Oceans (OTO) - A Speed Measurement Method Using AUV Radiated Noise Spectrum
摘要： The noise produced by a motor can be easily controlled because its speed is from 0 to 1000 rpm. The noise of a motor is mainly caused by the interaction between the stator and rotor, and the noise can be reduced by controlling the speed of the motor. In this paper, we use a motor to produce noise and control it by a computer. The motor is driven by a computer and the noise is measured by a microphone. The computer controls the speed of the motor and the noise is reduced.
关键词： noise reduction,motor noise,speed control,computer control
更新于2025-09-23 15:22:29
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[IEEE 2018 17th International Symposium on Distributed Computing and Applications for Business Engineering and Science (DCABES) - Wuxi, China (2018.10.19-2018.10.23)] 2018 17th International Symposium on Distributed Computing and Applications for Business Engineering and Science (DCABES) - Intelligent Street Lamp Control System with Dynamic Light Control Function
摘要： In order to solve the problem that the traditional street lamps cannot be controlled dynamically according to the specific conditions of the road at night, an intelligent street lamp control system based on speed and sensor detection information is designed to adjust the number of street lamps in front of the vehicle which are turned on in advance, including the illumination level of street lamps. The system combines Radio frequency identification technology to read the tag information of the vehicle through the reader installed on the street lamp and calculate the driving speed and the number of lamps to be turned on. The sensors are installed on the street lamp node to collect the environmental illumination and the vehicle driving information in real time. According to the fuzzy control strategy, the information is analyzed and calculated and the illumination level of the street lamp is adjusted accordingly. MATLAB simulation results show that the system can adjust the illumination level of the lamp quickly according to the result of the sensors, thus reducing the energy consumption of the system.
关键词： Fuzzy control,Radio frequency identification,Sensor,Vehicle detection,Dynamic control
更新于2025-09-23 15:22:29
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Electric-field control of spin accumulation direction for spin-orbit torques
摘要： Electric field is an energy-efficient tool that can be leveraged to control spin–orbit torques (SOTs). Although the amount of current-induced spin accumulation in a heavy metal (HM)/ferromagnet (FM) heterostructure can be regulated to a certain degree using an electric field in various materials, the control of its direction has remained elusive so far. Here, we report that both the direction and amount of current-induced spin accumulation at the HM/FM interface can be dynamically controlled using an electric field in an oxide capped SOT device. The applied electric field transports oxygen ions and modulates the HM/FM interfacial chemistry resulting in an interplay between the spin Hall and the interfacial torques which in turn facilitates a non-volatile and reversible control over the direction and magnitude of SOTs. Our electric-field controlled spin-orbitronics device can be programmed to behave either like the SOT systems with a positive spin Hall angle or a negative spin Hall angle.
关键词： spin-orbit torques,heavy metal/ferromagnet heterostructure,spin accumulation,non-volatile control,electric field control
更新于2025-09-23 15:22:29
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[IEEE 2018 IEEE Energy Conversion Congress and Exposition (ECCE) - Portland, OR, USA (2018.9.23-2018.9.27)] 2018 IEEE Energy Conversion Congress and Exposition (ECCE) - Three-Phase AC-Stacked PV Inverter Architecture and Output Balancing Control Strategy with Battery under Asymmetrical Irradiance Conditions
摘要： This paper presents three-phase AC-stacked photovoltaic (PV) inverter architecture integrated with battery and its output balancing control strategy under asymmetrical irradiance conditions. The main objective of this research is to verify the feasibility of decentralized control scheme in the three-phase AC-stacked PV inverter system and mitigate unbalanced output power caused by asymmetrical irradiance conditions. To keep the benefits of the decentralized control, the proposed output balancing control strategy uses local measurement information captured by individual energy storage inverter members. The proposed system is demonstrated and verified through a control-hardware-in-the-loop test.
关键词： decentralized control,asymmetrical irradiance changes,three-phase grid-tied inverter,output balancing control,ac-stacked PV inverter,PR-controller based harmonics filter
更新于2025-09-23 15:22:29
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A Performance Comparison of Centralized and Distributed Spectrum Management Techniques in Elastic Optical Networks
摘要： Elastic optical networks (EONs) have emerged to provide higher spectrum efficiency than traditional Dense Wavelength-Division-Multiplexing (DWDM) by utilizing enabling technologies such as flexible spectrum grid, Orthogonal Frequency Division Multiplexing (OFDM), and distance adaptive rate and modulation. The choice of the control-plane is an important consideration when deploying any new technology, especially in optical networks. This paper considers generic distributed and centralized spectrum assignment policies in conjunction with the accompanying connection set-up signaling protocols in EONs. A network simulator for Generalized Multiprotocol Label Switching (GMPLS) was developed with Forward Reservation Protocol and Backward Reservation Protocol signaling methods. These signaling techniques are used with the First Fit (FF) and Random Fit (RF) Routing and Spectrum Allocation (RSA) algorithms. The paper discusses control elements (central and distributed architectures) decisions under busy hour and normal network conditions and presents a comprehensive performance analysis of key performance metrics such as connection success rate, connection establishment time, and capacity requirement.
关键词： distributed control,signaling protocols,GMPLS,routing and spectrum allocation,centralized control,spectrum allocation,Elastic optical networks
更新于2025-09-23 15:22:29
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Autonomous Landing Control of Highly Flexible Aircraft based on Lidar Preview in the Presence of Wind Turbulence
摘要： This paper investigates preview-based autonomous landing control of a highly ?exible ?ying wing model using short range Lidar wind measurements in the presence of wind turbulence. The preview control system is developed based on a reduced-order linear aeroelastic model and employs a two-loop control scheme. The outer loop employs the LADRC (linear active disturbance rejection control) and PI algorithms to track the reference landing trajectory and vertical speed, respectively, and to generate the attitude angle command. This is then used by the inner-loop using H∞ preview control to compute the control inputs to the actuators (control ?aps and thrust). A landing trajectory navigation system is designed to generate real-time reference commands for the landing control system. A Lidar (light detection and ranging) simulator is developed to measure the wind disturbances at a distance in front of the aircraft, which are provided to the inner-loop H∞ preview controller as prior knowledge to improve control performance. Simulation results based on the full-order nonlinear ?exible aircraft dynamic model show that the preview-based landing control system is able to land the ?ying wing effectively and safely, showing better control performance than the baseline landing control system (without preview) with respect to landing effectiveness and disturbance rejection. The control system’s robustness to measurement error in the Lidar system is also demonstrated.
关键词： H∞ preview control,Highly ?exible aircraft,Lidar wind measurements,turbulence landing,autonomous landing control
更新于2025-09-23 15:22:29
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[IEEE 2018 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) - Saint-Petersburg, Russia (2018.11.26-2018.11.30)] 2018 Wave Electronics and its Application in Information and Telecommunication Systems (WECONF) - Electronic Methods to Protect Unmanned Aerial Vehicles from Seizing Control
摘要： the article deals with the issues of security in the transmission of control information over a wireless communication channel between an unmanned aerial vehicle and the control panel, as well as options for electronic methods of protection against external (unauthorized) interception of control of unmanned aerial vehicles.
关键词： wireless data transfer,remote control,control interception,wireless networks,unmanned aerial vehicles
更新于2025-09-23 15:22:29
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Mixed Logical Dynamical Nonlinear Model Predictive Controller for Large-Scale Solar Fields
摘要： This paper presents a control algorithm for reducing heat losses caused by clouds in large solar fields. The formulation is based on a Mixed Logical Dynamical (MLD) representation of the solar field plus the application of a Practical Nonlinear Model Predictive Controller (PNMPC) for calculating the optimal control action. The main purpose of the controller is to deactivate fields with inlet temperature greater than outlet temperature and to manipulate the oil flow rate of the activated fields for tracking the reference of the outlet temperature. A simplified lumped parameters model is used for prediction and simulation of the solar fields.
关键词： control of solar fields,mixed logical dynamical systems,Hybrid systems,nonlinear model predictive control
更新于2025-09-23 15:22:29
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[IEEE 2018 5th International Conference on Systems and Informatics (ICSAI) - Nanjing, China (2018.11.10-2018.11.12)] 2018 5th International Conference on Systems and Informatics (ICSAI) - An Optical Network Flow Control Algorithm Based on Benefit Optimization and Dynamic Path Coefficient
摘要： To avoid the congestion in flow control, this paper proposes an optical network flow control algorithm based on benefit optimization and dynamic path coefficient (BO-DPC). This algorithm adjusts path coefficient in time according to the network information. When the flow of requests can be passed lightly, the metric coefficient should be reduced. Whereas path metric coefficient should be increased. The adjustment can make request flow to a less congestion path. And if there is a congestion coming, the bigger request must be automatically abandoned. It has significant advantage compared with traditional SPF algorithm in the same circumstances, which verifies the applicability and rationality of the algorithm.
关键词： BO-DPC,Flow Control,SPF
更新于2025-09-23 15:22:29
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[IEEE IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - Valencia (2018.7.22-2018.7.27)] IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium - High Precision Control of an Inertially Stabilized Platform for Aerial Remote Sensing Applications
摘要： Inertially stabilized platform (ISP) is an important component of the aerial remote sensing system, which is used to make the imaging sensors stable so as to obtain the high quality images by disturbance rejection. To improve the stabilization accuracy of an ISP under multi-source disturbance environment, an active disturbance rejection control (ADRC) control scheme is prosed, which is composed of three components, i.e., a tracking differentiator (TD), a nonlinear state error feedback (NLSEF) and an extended state observer (ESO). To verify the method, the experiments are carried out. The results show that the proposed method can improve the stabilization accuracy due to significant ability in disturbances rejection.
关键词： Inertially stabilized platform,empirical method,active disturbance rejection control,disturbances rejection
更新于2025-09-23 15:22:29