In order to realize hardware-in-the-loop simulation of commonly used power electronic circuits, a method of joint simulation using Simcape and field programmable gate array (FPGA) is proposed. This article adopts a sw...
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With the dramatic transition in distribution power systems from centralized generation to distributed generation (DG), the system fault responses, especially fault current profiles, are going to experience some major ...
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During the hardware-in-the-loop simulation of multimode compound guidance, it is common for the receiving antenna center to deviate from the rotation center of the turntable. In this regard, this paper proposes a meth...
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ISBN:
(数字)9781510652095
ISBN:
(纸本)9781510652095;9781510652088
During the hardware-in-the-loop simulation of multimode compound guidance, it is common for the receiving antenna center to deviate from the rotation center of the turntable. In this regard, this paper proposes a method for dynamic target simulation of non-coplanar multimode radar. The corrected position of the target simulation at any receiving antenna center position and any target theoretical position is derived through the spatial geometric relationship. Aiming at the situation where the target position after correction is outside the original triad of antenna array, the target localization vector control method of the triad of antenna array at any observation position is proposed. Using this method as a criterion for pros and cons, the particle swarm optimization algorithm can be used to simulate targets at any location. The error between the expected angles and the corrected angles is within 0.02 degrees according to the digital simulation. This accuracy can satisfy the dynamic target simulation requirement in the hardware-in-the-loop simulation.
With the improvement of industrial intelligence, the train braking system has also ushered in a more rapid development, however, the huge consumption of funds required for the construction of the brake system experime...
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ISBN:
(纸本)9781665460231
With the improvement of industrial intelligence, the train braking system has also ushered in a more rapid development, however, the huge consumption of funds required for the construction of the brake system experimental platform has discouraged researchers, and the low flexibility also hinders the research of this region. In the recent years, the hardware-in-the-loop (HIL) simulation platform was introduced into the field of braking system research. With the cascade strategy, small trains can simulate the working conditions of large trains. In this process, there is a very important link: predict the pressure value of subsequent trains under the same test time. We found that the air pressure values which belong to time-series data of trains at different locations in one experiment still have spatiality. Therefore, these are data with temporal and spatial characteristics. Not only that, we will connect the temporal and spatial characteristics of different test rooms as a new consideration point for testing. In this paper, we propose a long short-term memory (LSTM) network based on the idea of residual error (R-LSTM), which predicts the air pressure between trains at different locations in different trials, and the RMSE index used has reached 2.7938.
This paper presents a comprehensive design approach for a field-oriented control of Interior Permanent Magnet Synchronous Machines (IPMSM). Initially, the IPMSM model is revisited. Later, a step-by-step procedure for ...
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ISBN:
(纸本)9781665469258
This paper presents a comprehensive design approach for a field-oriented control of Interior Permanent Magnet Synchronous Machines (IPMSM). Initially, the IPMSM model is revisited. Later, a step-by-step procedure for designing a Field Oriented Control (FOC) Strategy for IPMSM is presented. The control strategy is in dq-rotating reference frame and it is synchronized with the rotor position. The current controllers are designed based on setting a desired closed-loop time-constant while the speed controller is designed based on a frequency response approach, which is different from the conventional methods. The proposed approach supplies all the steps to accurately tuning the parameters of the Proportional-Integrator (PI) controllers of the current and speed control loops. Furthermore, the proposed design approach is a fast, reliable and accurate guide to implement IPMSM drive based on FOC. Results from a hardware-in-loop (HIL) with external microcontroller are presented. The comprehensive design approach is verified under two different IPMSM parameters and the results showed its effectiveness.
As new features for driver assistance and active safety system are going rapidly in vehicle, the interface between hardware and simulation model within a virtual and real environment has become necessity. In this pape...
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The boost-glide rocket needs to maneuver in the atmosphere with complex flight conditions, which is a big challenge for the attitude control system. In this paper, the design process of the control system is analyzed....
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The boost-glide rocket needs to maneuver in the atmosphere with complex flight conditions, which is a big challenge for the attitude control system. In this paper, the design process of the control system is analyzed. With specific points of the flight trajectory, the design of an improved proportional-integrative-derivative (PID) controller based on the small perturbation theory is carried out. Design approach of the attitude control system is verified by the six-degree-freedom model simulation. The rocket flight control program is written to the onboard computer so that hardware-in-the-loop simulation experiment is completed. Experimental results show that the mean and standard deviation of the error between simulation value and experiment value are below 0.5 degrees, so the control parameters and design method are reasonable with a great attitude tracking effect. This paper proposes the design and verification method of a boost-glide rocket attitude control system, which can provide a reference for design of the boost-glide rocket around the world.
This paper presents the hardware-in-the-loop (HIL) platforms validation for a fault ride through control strategy. The proposed fault ride through (FRT) control strategy is to be embedded in the inverter-based interfa...
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This study aims to explore an intelligent vehicle trajectory tracking control method based on optimal control theory. Considering the limitations of existing control strategies in dealing with signal delays and commun...
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This study aims to explore an intelligent vehicle trajectory tracking control method based on optimal control theory. Considering the limitations of existing control strategies in dealing with signal delays and communication lags, a control strategy combining an anthropomorphic forward-looking reference path and longitudinal velocity closure is proposed to improve the accuracy and stability of intelligent vehicle trajectory tracking. Firstly, according to the vehicle dynamic error tracking model, a linear quadratic regulator (LQR) transverse controller is designed based on the optimal control principle, and a feedforward control strategy is added to reduce the system steady-state error. Secondly, an anthropomorphic look-ahead prediction model is established to mimic human driving behavior to compensate for the signal lag. The double proportional-integral-derivative (DPID) control algorithm is used to track the longitudinal speed reference value. Finally, a joint simulation is conducted based on MatLab/Simulink2021b and CarSim2019.0 software, and the effectiveness of the control strategy proposed in this paper is verified by constructing a semi-physical experimental platform and carrying out a hardware-in-the-loop test. The simulation and test results show that the control strategy can significantly improve the accuracy and stability of vehicle path tracking, which provides a new idea for future intelligent vehicle control system design.
This paper focuses on avoiding a dynamic obstacle for Micro-aerial vehicles (MAVs). Instead of estimating the depth or the 3D model of the obstacle, our method is only based on images. First, a geometric model is esta...
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ISBN:
(数字)9781665405935
ISBN:
(纸本)9781665405935
This paper focuses on avoiding a dynamic obstacle for Micro-aerial vehicles (MAVs). Instead of estimating the depth or the 3D model of the obstacle, our method is only based on images. First, a geometric model is established, which describes the relationship between a quadcopter and a dynamic obstacle by a monocular camera. Then, based on the established geometric model and the dynamics of the quadcopter, the avoidance control command, namely the angular velocity and the thrust, are generated in real-time. Finally, both the hardware-in-the-loop simulation and the flight experiment are demonstrated to verify the effectiveness of the algorithm.
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