Controller
Mostrando 25-36 de 579 artigos, teses e dissertações.
-
25. On the controlling of temperature: A proposal for a real-time controller in broiler houses
ABSTRACT: Environmental conditions in broiler houses, specifically temperature, are key factors that should be controlled to ensure appropriate environment for broiler rearing. In countries with tropical/subtropical climate, like Brazil, high temperatures produce heat stress to animals, affecting the production process. This research proposes a real-time mod
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-12
-
26. Design of Attitude Control Servomechanisms with Fluid Ring and CMG for Rigid Satellite
ABSTRACT: Satellites cover a wide range of space missions as remote sensing. Accomplishment of the mission depends on satellite's stability maintenance and direction. The main task of the attitude control system is to provide stability to the satellite against external disturbances. Such perturbations are caused due to aerodynamic drag, solar radiation and m
J. Aerosp. Technol. Manag.. Publicado em: 08/11/2018
-
27. Investigation on Solar PV generation and design of switched reluctance motor for Smart Agriculture actuation system
ABSTRACT This paper presents standalone solar photovoltaic (PV) powered fed actuation system employing a switched reluctance motor (SRM) particularly used in remote and rural areas. The converter efficiency is achieved by changing ON and OFF state of solar PV drive. An electronic commutation drives SRM drive with achieved by position hall sensor and encoder.
Braz. arch. biol. technol.. Publicado em: 08/10/2018
-
28. Control of a robotic knee exoskeleton for assistance and rehabilitation based on motion intention from sEMG
Introduction: This work presents the development of a novel robotic knee exoskeleton controlled by motion intention based on sEMG, which uses admittance control to assist people with reduced mobility and improve their locomotion. Clinical research remark that these devices working in constant interaction with the neuromuscular and skeletal human system impr
Res. Biomed. Eng.. Publicado em: 30/07/2018
-
29. Controller for a SPS machine: a proposal PI control
ABSTRACT Temperature control is the key to effective sintering process for metal, ceramic and polymer powders. The original control temperature provides an irregular control operation process which affects the material properties due to the spacer involved in it. Furthermore, it is analyzed how the material responds to an electrical input determining a model
Matéria (Rio J.). Publicado em: 19/07/2018
-
30. Automatically controlled deficit irrigation of lettuce in “organic potponics”
ABSTRACT: Concerns with water crisis involve all sectors of society and irrigated agriculture remains the main water consumer. This study evaluated an agricultural production system for lettuce cultivation in greenhouse, “organic potponics”, to economize water and manure use, using a Simplified Irrigation Controller (SIC), based on soil matric potential
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-01
-
31. Passive Fault-Tolerant Control of an Underactuated Re-Entry Capsule
ABSTRACT: The design of a passive fault-tolerant control for an underactuated re-entry capsule is considered in this paper; however, the control input of the capsule is failed. At first, kinematics and dynamics of the capsule are studied and modeled, and adaptive control law is used to design a passive controller for the control of the capsule. The guidance
J. Aerosp. Technol. Manag.. Publicado em: 2017-12
-
32. Reducing the Effects of Inaccurate Fault Estimation in Spacecraft Stabilization
ABSTRACT Reference Governor is an important component of Active Fault Tolerant Control. One of the main reasons for using Reference Governor is to adjust/modify the reference trajectories to maintain the stability of the post-fault system, especially when a series of actuator faults occur and the faulty system can not retain the pre-fault performance. Fault
J. Aerosp. Technol. Manag.. Publicado em: 2017-12
-
33. OPTIMAL LOCATION PROBLEM FOR THE INSTALLATION OF POWER FLOW CONTROLLER
ABSTRACT In power delivery systems, the use of dispersed generation and security control to improve network utilization requires the optimal use of system control devices. The installation of loop controller allows the distribution system to operate in a loop configuration, achieving effective management of voltage and power flow. In the investment planning
Pesqui. Oper.. Publicado em: 2017-09
-
34. Robust Optimal Adaptive Trajectory Tracking Control of Quadrotor Helicopter
Abstract This paper focuses on robust optimal adaptive control strategy to deal with tracking problem of a quadrotor unmanned aerial vehicle (UAV) in presence of parametric uncertainties, actuator amplitude constraints, and unknown time-varying external disturbances. First, Lyapunov-based indirect adaptive controller optimized by particle swarm optimization
Lat. Am. j. solids struct.. Publicado em: 2017-06
-
35. LOW-COST AUTOMATION OF FERTIGATION WITH PROGRAMMABLE LOGIC CONTROLLER AND GAS-FILLED SENSORS
ABSTRACT The aim of this study was to develop and evaluate a low-cost automation system for management of different fertigation regimes in tomato plants (Solanum lycopersicum L.) grown in a protected environment. The system consisted of an irrigation controller coupled to substrate moisture sensors and to a programmable logic controller (PLC). Four water reg
Eng. Agríc.. Publicado em: 2017-04
-
36. Evaluation of gloves as a water bag coupling agent for therapeutic ultrasound
Abstract Introduction Therapeutic ultrasound (TUS) is a widespread modality in physiotherapy, and the water bag technique is a coupling method employed in the presence of anatomical irregularities in the treatment area. The aim of the present study is to evaluate the acoustic attenuation of the water bag and its effectiveness as a TUS coupling agent. Metho
Res. Biomed. Eng.. Publicado em: 27/03/2017