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This paper proposes a modified quadratic boost converter with high efficiency and reduced cost. This converter mainly comprises of the quadratic part. The newly proposed converter in this paper is compared with a quasi z source converter which is a quadratic boost converter. The current ripples, cost, efficiency, losses and the complexity of the converters are considered. The steady state analysis...
In the first part of this paper we present the discretization method of fractional order system. In the second part, predictive control based on a fractional state-space model will be presented. In the third part we will present simulation results.
In order to complete nonlinear path following smoothly and accurately, this paper proposes a method utilizing the Serret-Frenet Line-of-Sight (LOS) guidance with adaptive compensation in the horizontal plane. All regular paths are feasible. Our method takes three steps to accomplish the path following. First, the guidance law calculates the desired yaw angle. Then an adaptive compensation is added...
The components and systems involved in railway operation are subject to stringent reliability and safety requirements, but up until now the cyber security of those same systems has been largely under-explored. In this work, we examine a widely-used railway technology, track beacons or balises, which provide a train with its position on the track and often assist with accurate stopping at stations...
This paper suggests a PI controller with adding rate limiter anti-windup loop for pitch angle control system of variable speed wind turbine (VSWT). The rate limiter anti-windup loop prevents the overloading on the wind Energy conversion system (WECS) at a high and fast change in wind speed by improving the control system response. Also the paper analyzes the rate limiter anti-windup loop and suggests...
A novel design of pose deformation system for mobile robots is presented in this paper, which transforms the position of moveable wheels by pushrods mechanism to adapt rough road conditions. A simulation method, which combined the control schemes and physical structures through the Bond Graph and Simulink, is utilized to model the pose deformation and running control process of the proposed design...
The dual-stator permanent magnet synchronous motor (DSPMSM) features high efficiency and high torque and power density, but its special structure makes it difficult to design and there is no ready-made design software like traditional motors. In this paper, a DSPMSM control system for electric vehicles (EV) is designed, and achieves the field-circuit time-stepping finite element simulation using software...
The HIV infection system is one of the important dynamical systems of viruses, which have been interested by many researchers. In particular, there are several studies on the use of nonlinear feedback control to determine the treatment. The aim of the treatment is to control the amount of uninfected CD4+T cells to the desired level, and to drive the amount of infected CD4+T cells and free virus particles...
Environment in some special areas of nuclear power plant is very bad, and is even worse and inaccessible after a nuclear accident. Therefore, a robot developed for special occasions of nuclear plant operation is urgently needed. Different from ordinary robots, nuclear industry robots face even worse environments, such as high radiation, high temperature, high pressure, narrow space, slopes, stairs,...
Managed Pressure Drilling (MPD) is a control technique for controlling pressure in the presence of wave disturbance. It works as an insurance against delays due to weather conditions by saving time and increasing the efficiency of offshore drilling operations. During MPD, a circulating drilling fluid is released in well through control choke which helps to dynamically control fluid pressure in the...
As distributed systems such as automotive, medical, manufacturing automation become larger and more complex, it is difficult to test these systems. Also, the synchronization of distributed applications make the testing more difficult. In the Software-in-the-Loop (SiL) simulation, a synchronization method among clock of applications is provided for virtual hardware devices and environment. A typical...
Designers of complex SoCs have to face the issue of tuning their design to achieve low power consumption without compromising performance. A set of complementary techniques at hardware level are able to reduce power consumption but most of these techniques impact system performance and behavior. At register transfer level, low power design flows are available. Unfortunately, equivalent design flows...
For online control of various dynamical systems, an adaptive artificial neural network (ANN) based proportional integral derivative (PID) controller is developed. For linear time invariant processes, conventional PID controller is suitable but they have limitations when they are required to control the plants having high non linearity or their parameters are changing with the time. In order to find...
This paper presents the regenerative braking design control and simulation of a hybrid energy storage system (HESS) for an electric vehicle (EV). The EV is driven by two 30 kW permanent magnet synchronous motors. The HESS contains a Li-Ion battery and an Ultra-Capacitor (UC) sources. In extreme braking conditions, the UC should be able to recover all the power delivered by the motors. When the maximal...
Compared the mechanical adjustment with hydraulic position closed-loop adjustment, the structure of mandrel supporting device of rolling tube machine is analyzed in this paper, then the AMESim software is applied to model the position closed-loop control hydraulic system dynamics based on its structure parameters, where the simulation results play an important role in designing the hydraulic control...
Existing power and rate control methods for wireless networks did not consider channel nonlinearity. This paper presents a power and rate controller for wireless networks with nonlinear channel fading. The controller is designed based on robust approach, and the performance is analyzed via linear matrix inequality (LMI). Simulation results illustrate the effectiveness of the proposed controller.
The aim of simulation technique for production line is to find out the most feasible scheme which designers made for the project. Simulation technique can verify the actual effect of the project from the schemes. Combined with the actual production mode, the article analyzed the bottleneck of production efficiency under different shifts. It mainly discussed the value of simulation technology for production...
In this paper, a new type of electro-hydraulic proportional control system with three way cartridge valve is proposed. By establishing its mathematical model and simulation model, it is compared with the control system of the high pressure unloading valve. It is shown that the control performance of the proposed scheme is better than the system of the high pressure unloading valve. With accumulator...
The main challenge of motion planning for a hyper-redundant manipulator is to implement a modular structure ensure real time and high performance of the control system. In this research, we present a strategy to deal with the motion planning problem of a hyper-redundant manipulator, include uncertain time delay to the control system and obstacle avoidance. Similarly to the principles of motor control...
In this paper, in order to solve the path-following problem of underactuated surface ships, active-disturbance rejection control combining with the variable structure is proposed to steer a desired path. On the other hand, the uncertainties of internal dynamic and external disturbances can also be solved. In this way the needed setting parameters are greatly reduced with no change of the intrinsic...
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