Papers by Keyword: Controller

Abstract: Nowadays, 3D printing technology is the national theme in Vietnam. Most countries have national strategies in research and development and widely apply 3D design and printing to all industries, organizations and people. 3D printing technology has been applied in many industries such as automotive, aviation, health, construction, electronics ... Almost all Digital Light Processing (DLP) 3D printing machine on ​​domestic market are imported from Chinese, Korean manufacturers ... with medium quality but high cost. The paper presents a study of application of selected design methods and tools of engineering design process to design DLP 3D printer driver with lower cost but equivalent quality with the other machine in series on the market that are imported from China.

Abstract: The evolution of the optimization of photovoltaic/supercapacitor system according to its age is inquired. The system is modeled by an accurate equivalent circuit. The durations and energies of charge/discharge cycles are calculated for a 10 year use. The temporal and energy efficiencies are then deduced according to time, and optimal values are hence extracted. Results show that the optimal efficiencies can be kept constant over time at a value around 90% for the energy. However, the amount of energy stored and released by the supercapacitors is reduced over the years and the response time becomes shorter. So, the behavior of the system is modified with aging regarding its initial nominal functioning. This has to be considered to know the real profitability of the system.

Abstract: The article design a kind of intelligent control system with the function that can synthesize data, signal transmission and power control at the same time that it includes six components such as terminal equipment, network, controller, circuit, intelligent socket, electrical equipment. This article introduces the three detailed system implementation case with electrical equipment management mode of supply, working mode and working state of intelligent control is realized through the design of the system and improve the applicability of the system.

Abstract: This paper presents a solution for the real power control, generated by a synchronous generator belonging to a small hydroelectric power plant. The proposed control system is based on the simple feedback structure which contains also, a frequency correction loop. The mathematical models of all the elements from the control structure are detailed. Also, starting from these models, the real power controller (of Proportional – Integral – Derivative type) tuning procedure is presented. In the end of the paper, the simulations results of the control system are presented highlighting the obtained control performances. The proposed solution is a general one and it can be adapted with relative minor changes to any hydroelectric power plant.

Abstract: The paper deals with the design of an ideal positioning servo system. To achieve this aim, we will derive transfer functions of the PID controller and the second-order low-pass filter while using typical fault frequencies for PID controller with a low pass filter. Consequently, an overall frequency characteristic of the open servo system will be depicted. This characteristic will be further used to determine the amplitude and phase safety, which determine the degree of stability system.

Abstract: Modern industrial robots are designed according to the principal design rules to construct light and stiff. When the controllers are used in industrial robots, the problem arises due to the repetitive motion and technical aspects of the controller. In this work, we proposed an alternative electronics controller design for the robotic arm in order to withstand various load conditions. The PIC controller is used to control the robot motion and to reduce time delay of motion and to analyze the performance of the prototype on various load conditions. In this paper, a robotic arm that serves as a tool to lift an object from one place to another where it can be widely used in factory is developed. The main focus of this work is to design, develop and to implement robot arm with enhanced control with stumpy cost. The proposed system is actuated by 3 DC motors and the motion of the robot arm is controlled by PIC micro controller. The robot arm is designed with two degree of freedom and talented to accomplish accurately simple tasks, such as light material handling, which will be integrated into a mobile platform that serves as an assistant for industrial work force. The designed arm lifts up to 2 kg object.

Abstract: This paper describes applications of a Delta-Sigma (ΔΣ) modulator to control a DC-DC converter. We propose to use a continuous-time (CT) feed-forward (FF) ΔΣ controller in a DC-DC converter and show that its transient response is faster than discrete-time (DT) and/or feedback-type (FB) ΔΣ controllers. We have also performed experiments of a DC-DC converter with a first-order continuous-time feedback ΔΣ controller and show its results.

Abstract: In view of the inefficiency and the poor flexibility of the recent intelligent lighting control system, this paper proposes a new control method starting from sensor, controller and LED driver circuit, meanwhile connecting with the Internet of things technologies. The most striking feature of this control is that it is refactored in the aspect of the whole system, which can reach the purposes of scene control, timing control, multi-zone control and remote control, etc. This paper also elaborates the hardware circuit design and the working principle of the control system and the method to realize the remote control. The system can operate simply, control efficiently, transmit reliably, manage easily.

Abstract: In order to further optimize the control system of self-balancing electric vehicle, the method of linear quadratic regulator (LQR) based on genetic algorithm (GA) was presented in this paper. Firstly, the mathematical model of self-balancing electric vehicle was established by Lagrange equation, and then matrix Q and R in LQR which is used to control self-balancing electric vehicle system were optimized by GA. Thus the optimal control of self-balancing electric vehicle control system was realized. The optimization method was proved to be effective by comparing the simulation results of the optimized controller with the original.

Abstract: This paper focuses on the research and development of a non-contact measuring device which is novel, practical, low-cost, and high-precision. The mechanism, working principle, control flow diagram and method of this new device is presented.