Hardware-in-the-Loop Simulation of Vibration Control of Stay Cables with Damper Based on dSPACE System

A simple and economical method based on dSPACE system is developed to measure the effect of cable vibration control.The experiments,numerical simulation and hardware-in-the-loop(HIL)simulation are carried out for the vibration control of stay cables with dampers.Firstly,the test results of solid cable vibration under harmonic excitation are compared with the numerical simulation results of cable vibration to ensure the correctness of the simulation of cable module.Then,the vibration test results of solid cable with damper under harmonic excitation are compared with the numerical simulation results of solid cable with damper to ensure the correctness of the relevant modules.Finally,the external load and the cable are imported into the real-time simulation system to simulate the control effect of the damper under the current excitation in real time.The results show that the simulation is correct and the HIL simulation is feasible in the bridge engineering.

Realization of nonlinear PID with feed-forward controller for 3-DOF flight simulator and hardware-in-the-loop simulation

As friction, intrinsic steady-state nonlinearity poses a challenging dilemma to the control system of 3-DOF （three degree of freedom） flight simulator, a novel hybrid control strategy of nonlinear PID （proportionalintegral-derivative） with additional FFC （feed-forward controller） is proposed, and the hardware-in-the-loop simulation results are also given. Based on the description of 3-DOF flight simulator, a novel nonlinear PID theory is well introduced. Then a nonlinear PID controller with additional FFC is designed. Subsequently, the loop structure of 3-DOF flight simulator is also designed. Finally, a series of hardware-in-the-loop simulation experiments are undertaken to verify the feasibility and effectiveness of the proposed nonlinear PID controller with additional FFC for 3-DOF flight simulator.

Development of a Low-cost Hardware-in-the-loop Simulation System as a Test Bench for Anti-lock Braking System

Nowadays validation of anti-lock braking systems（ABS） relies mainly on a large amount of road tests.An alternative means with higher efficiency is employing the hardware-in-the-loop simulation（HILS） system to substitute part of road tests for designing,testing,and tuning electronic control units（ECUs） of ABS.Most HILS systems for ABS use expensive digital signal processor hardware and special purpose software,and some fail-safe functions with regard to wheel speeds cannot be evaluated since artificial wheel speed signals are usually provided.In this paper,a low-cost ABS HILS test bench is developed and used for validating the anti-lock braking performance and tuning control parameters of ABS controllers.Another important merit of the proposed test bench is that it can comprehensively evaluate the fail-safe functions with regard to wheel speed signals since real tone rings and sensors are integrated in the bench.A 5-DOF vehicle model with consideration of longitudinal load transfer is used to calculate tire forces,wheel speeds and vehicle speed.Each of the four real-time wheel speed signal generators consists of a servo motor plus a ring gear,which has sufficient dynamic response ability to emulate the rapid changes of the wheel speeds under strict braking conditions of very slippery roads.The simulation of braking tests under different road adhesion coefficients using the HILS test bench is run,and results show that it can evaluate the anti-lock braking performance of ABS and partly the fail-safe functions.This HILS system can also be used in such applications as durability test,benchmarking and comparison between different ECUs.The test bench developed not only has a relatively low cost,but also can be used to validate the wheel speed-related ECU design and all its fail-safe functions,and a rapid testing and proving platform with a high efficiency for research and development of the automotive ABS is therefore provided.

SPACECRAFT DOCKING SIMULATION USING HARDWARE-IN-THE-LOOP SIMULATOR WITH STEWART PLATFORM

A ground-based hardware-in-the-loop （HIL） simulation system with hydraulically driven Stewart platform for spacecraft docking simulation is presented. The system is used for simulating docking process of the on-orbit spacecraft. Principle and structure of the six-degree-of-freedom simulation system are introduced. The docking process dynamic of the vehicles is modeled. Experiment results and mathematical simulation data are compared to validating the simulation system. The comparisons of the results prove that the simulation system proposed can effectively simulate the on-orbit docking process of the spacecraft.

Hardware-in-the-Loop Simulation System for Space Manipulator Docking: Model,Stability and Experimental Evaluation

A manipulator-type docking hardware-in-the-loop(HIL)simulation system is proposed in this paper,with further development of the space docking technology and corresponding requirements of the engineering project.First,the structure of the manipulator-type HIL simulation system is explained.The mass and the flexibility of the manipulator has an important influence on the stability of the HIL system,which is the premise of accurately simulating actual space docking.Thus,the docking HIL simulation models of rigid,flexible and flexible-light space manipulators are established.The characteristics of the three HIL systems are studied from three important aspects:the system parameter configuration relation,the system stability condition and the dynamics frequency simulation ability.The key conclusions obtained were that the system satisfies stability or reproduction accuracy.Meanwhile,the influence of different manipulators on the system stability is further analyzed.The accuracy of the calculated results is verified experimentally.

Hardware-in-the-loop simulation of communication networks

To enhance the fidelity and accuracy of the simulation of communication networks,hardware-in-the-loop（HITL） simulation was employed.HITL simulation methods was classified into three categories,of which the merits and shortages were compared.Combing system-in-the-loop（SITL） simulation principle with high level architecture（HLA）,an HITL simulation model of asynchronous transfer mode（ATM） network was constructed.The throughput and end-to-end delay of all-digital simulation and HITL simulation was analyzed,which showed that HITL simulation was more reliable and effectively improved the simulation credibility of communication network.Meanwhile,HLA-SITL method was fast and easy to achieve and low-cost during design lifecycle.Thus,it was a feasible way to research and analyze the large-scale network.

New Solution on Distributed Hardware-in-the-Loop Radar System Simulation on HLA

In the large-scale distributed hardware-in-the-loop radar simulation system based on HLA, a new solution of processing after acquisition is proposed, which separates the software subsystem from the hardware jammer subsystem by a response database, so as to settle the problem, that the software subsystem can not meet the real-time need of the hardware, with very little increment of code. And the data completeness and feasibility of this solution are discussed.

基于dSPACE/MATLAB/Simulink平台的实时仿真技术研究

本文以某飞行器侧向通道稳定控制系统为例,基于dSPACE标准组件和MATLAB/Simulink软件环境,建立了控制系统的半实物仿真平台并进行了半实物仿真。结果表明这种基于dSPACE的仿真系统具有构建便捷、高效和精度高等优点,尤其适用于数字控制系统。

基于Simulink和dSPACE的SVPWM的实时仿真

分析了空间电压矢量脉宽调制(SVPWM)的基本原理,给出了具体的算法步骤。介绍了基于Simulink和dSPACE快速控制原型的开发流程,建立了SVPWM的仿真模型,并将SVPWM算法下载到dSPACE的实时硬件中,实现了对逆变器智能功率模块的实时控制。实验结果表明,基于dSPACE系统能够快速验证算法的可行性,缩短控制系统的开发周期,提高开发质量。

Design of an Integrated SITL and HITL Simulation System for the Control of a Loitering Aerial Vehicle

An investigation into the aircraft flight simulation and control system is presented in this paper. The study was firstly focused on the establishment of an integrated hardware-in-the-loop（HITL） platform for aircraft flight simulation based on MATLAB/Simulink ＋ dSPACE. The platform combines the abundant software and hardware resources of dSPACE simulation platform to simulate the flight attitude of an aircraft in six-DOF （ degree of freedom） motion. Based on the platform, the study was then focused on the flight numerical simulation by taking a loitering aerial vehicle as an example. An aircraft mathematical model was created for a modular design and off-line numerical simulation based on MATLAB/Simulink. Finally, the study was focused on the control system design of the loitering aerial vehicle and conduct of an HITL simulation experiment for the vehicle pitch control. The experiment verifies the system design and control effectiveness. Research results show that the dSPACE simulation system provides a real time good experimental platform to improve the efficiency of study and development of a flight control system.

Hardware in Loop Simulation for Emergency Communication Mobile Ad Hoc Network

For the research of mobile Ad hoc network (MANET), hardware in the loop simulation (HILS) is introduced to improve simulation fidelity. The architectures and frameworks of HILS system are discussed. Based on HILS and QualNet network simulator, two kinds of simulation frameworks for MANET multicast emergency communication network are proposed. By running simulation under this configuration and doing experiments with on-demand multicast routing protocol (ODMRP), unicast and multicast functions of this protocol are tested. Research results indicate that HILS method can effectively reduce the difficulty of system modeling and improve precision of simulation, and can further accelerate transition from design to system deployment.

dSPACE实时仿真平台软件环境及应用

从某种角度上来说,一个国家的半实物仿真技术的发展水平代表了其整体的科技实力。主要介绍了dSPACE实时仿真平台的优点及其软件环境,它包括代码生成及下载软件和测试软件;阐述了基于dSPACE进行控制系统开发的步骤,它比较传统的方法具有方便、高效、精确等优越性;以此为契机,具体应用dSPACE仿真平台进行了某型反航导弹控制系统半实物仿真的开发,结果证明此次仿真实验是比较成功的。

基于dSPACE半实物仿真技术的伺服控制研究与应用

半实物仿真是一种针对实际过程的实时仿真技术,它可将需要的实际受控对象放置在仿真系统回路中进行仿真研究,可对控制参数进行在线调参,改善实际系统的性能。本文介绍了基于dSPACE的半实物仿真技术,利用MATLAB/Simulink的系统建模方法和dSPACE系统的软硬件环境,完成了对足球机器人伺服控制系统的研究与开发,获得了满意的效果。

基于dSPACE的车辆起步控制策略硬件在回路仿真

基于dSPACE软硬件,应用matlab/simulink系统建模方法,搭建了车辆起步控制的硬件在回路仿真平台;针对车辆起步控制系统存在的非线性、时变、多参数等特性,提出了对离合器和油门进行协调控制的分级模糊控制方法;利用推理法编写了单片机的模糊控制程序;基于上述平台,详细调整了各级模糊控制规则,并进行了起步控制的硬件在回路仿真实验;结果表明,该方法能够满足实时性要求,并具有良好的控制效果。

基于dSPACE的4WS车辆硬件在环控制仿真研究

基于Matlab/Simulink/dSPACE开发了四轮转向(4WS,Four-wheel Steering)车辆控制系统的硬件在环仿真(HILS,Hardware In the Loop Simulation)快速开发平台。在此平台的基础上,利用HILS技术实现了各控制算法鲁棒性能的评价和实际车辆执行电机死区的控制,结果表明基于μ综合鲁棒控制方法有较好的综合性能。因此设计开发的4WS硬件在环仿真开发平台为先进控制算法的分析与设计、开发和评价及ECU的开发提供理论指导和技术支持。

控制系统硬件在回路实时仿真实验平台的dSPACE实现

应用dSPACE半物理仿真系统,研制一套电动伺服系统硬件在回路实时仿真实验平台。研究了基于dSPACE系统的运动控制系统半物理仿真实验平台的系统结构及开发流程,设计了一种适合于多种类型电机的通用电机驱动装置,最后在该实时仿真实验平台上研究了无刷直流电动机伺服控制系统的设计,并通过实验结果验证了系统设计的合理性及控制的有效性。研究成果表明,dSPACE实时仿真系统为运动控制系统的研究与开发提供了一个良好的实验平台,大大提高了研究工作的效率。

基于dSPACE的永磁同步电机控制半实物仿真实验设计

永磁同步电机数学模型是一个高阶、非线性、强耦合的时变多变量系统,数字离线仿真在实际应用中无法取得理想效果,而采用单片机或DSP的实际电机控制系统又需要编写复杂的程序。基于dSPACE半实物仿真系统设计了永磁同步电机控制实验,在实践中取得了较好效果。

dSPACE快速控制原型技术在无刷直流电动机控制中的应用

针对无刷直流电动机(BLDCM)难以建立精确数学模型的问题,基于d SPACE实时仿真设备对其进行快速控制原型设计,搭建了实时仿真平台。对在Matlab/Simulink环境下构建的控制算法进行编译、下载,实现了对无刷直流电动机的实时控制,同时验证了d SPACE快速控制原型技术的有效性和实用性。

基于dSPACE的无刷直流电机控制系统

永磁无刷直流电机的控制算法一般采用软件编程的方法实现,其开发过程复杂,代码编写工作繁重,开发周期长。而基于Matlab/Simulink开发的dSPACE实物仿真软硬件实验平台系统,无需代码编写,开发周期短,实时性好,可靠性高。该文开发了一套以dSPACE为核心的无刷直流电机实验平台,在Matlab/Simulink中采用S-函数对三相绕组反电势进行了建模,进行了无刷直流电机闭环控制的仿真研究,然后在该平台上搭建了实际系统,并利用ControlDesk进行了在线参数调试。实验结果验证了无刷直流电机的优越性能和该实验平台的可靠性,并为研究更加复杂的控制算法提供了基础。

基于dSPACE的电机控制算法研究平台设计

电机控制理论的发展使得新型控制算法层出不穷,其中数字离线仿真无法验证算法在实际应用中的真实效果,而直接采用单片机或DSP的实际系统又需要编写复杂的程序,因此基于dSPACE实时仿真系统设计了电机控制算法研究平台,使得快速开发和验证各种复杂控制算法成为可能,且易于修改,在实践中取得了较好效果。