Papers by Keyword: Hardware-in-Loop

Abstract: The ship-borne satellite earth station was studied to establish a hardware-in-loop simulation system for employee training. Preliminary demand analysis for staff of all levels shows the complexity of this system. Based on the distributed simulation theory of HLA, system framework and implementation approach was proposed. Key technologies for modeling and simulation of ship-borne satellite earth station were discussed in this article. Subsequently the block diagrams of device simulator and simulation agent were clearly described. Finally the specific steps of operation were created to show the details of actual running process, which prove the feasibility of this system.

Abstract: Hardware-In-Loop (HIL) is a technique for control engineering testing which consists of two design parts, a real hardware design and a computer simulation design. In this paper, input signals can be obtained from the sensors while the output results of the engine combustions are generated from simulation based on mathematical model. The controller for Air-Fuel Ratio (AFR) is built to the hardware. Basically, testing using this method can reduce the cost and time-to-market in the development process. Once the real time simulation results satisfy the desired result, the design will be burned into the hardware controller and hence the system will be tested again. Both simulation and hardware results are then being compared. The main purpose for the HIL system is to develop new control algorithms as well as to control the effect of errors from sensors and engine combustion.

Abstract: Due to the features of complicated test environment, variable parameters, and limited conditions in real car experiment, it has proposed a Hardware-in-Loop test platform for Fuel Cell System (Short for FCS) based on hardware of NI PXI and software of NI Labview to fuel cell vehicle. According to FCS’s control strategy, I/O signal map, CAN communication and sensor characteristics, it has designed the hardware configuration, software program, test interface, and rapidly made validation to control logic and fault diagnosis of Fuel Cell System’s Electronic Control Unit (Short for FCU). The experiment result shows that this test platform is effective for FCU control logic validation, system status monitor, fault injection, fault tracing, and it can shorten the vehicle research and development cycle, reduce the development cost, optimize test environment and promise safety for test engineer. This test platform will make good effect to vehicle electrical system development and supply reference for vehicle test.

Abstract: An Incremental Structure of Speed-Tracking Driver Model was Developed by Using PID and Fuzzy Compound Control, and the Actual Driver's Handling Features and the Application of Hardware-in-Loop Simulation had been Fully Considered in this Model. Operation Delay, Shifting Coordination, Anti-Saturation of Integral, Zero-Speed Correction and Pre-Compensation Control were Proposed. the merits and demerits were Studied with Different Control Methods. the Results Show that Better Overshoot and Steady Accuracy are Obtained by PID and Fuzzy Control, and it’s the Several Correction Modules that make the Driver Model more Approximate to Real Driving Characteristics and more Conducive to the Practical Application of Hardware-in-Loop Simulation.

Abstract: In this paper a sliding mode controller was designed to calculate the target yaw moment for model tracking control and a fuzzy controller was used to real-timely determine the activation of the algorithm, which ensures the robustness of the control system, while avoiding chattering and undesired intervention of ESP at the same time. After testing the control algorithm on the HIL test bench in double-lane change condition, a comparison was made between the trajectories and handling stability of vehicles with the control algorithm and those without. The simulation and experimental results demonstrate that the designed control algorithm can effectively improve the stability of the vehicle.

Abstract: This paper explored how to make use of extended Kalman filter (EKF) technique to estimate the state of charge (SOC) of battery. Based on the equivalent circuit model of battery, a mathematical model of EKF was established, and an EKF algorithm of SOC estimation was presented. By single chip microcomputer (MCU) of MC9S12DG128, a hardware platform for experimenting with this algorithm was built up. Then this algorithm was verified by two kinds of discharge tests on the hardware in the loop platform. The test results show that this algorithm is able to satisfy the requirement of SOC estimation. It has a high accuracy, and a low error accumulation.

Abstract: According to the regenerative braking system(RBS) with a pedal emulator as well as the control strategy. Design a hardware test platform of power regenerative system and the scheme of software experiment. Aim at the control strategy, braking safety and braking feeling of RBS with a braking pedal emulator is confirmed via hardware in loop (HIL) test. A high regenerative rate is obtained. From the result of simulation, the pedal force line from RBS with a pedal emulator is between the envelope curve of the pedal force from conventional vehicle. Actual wheel cylinder pressure can follow the change of target pressure very well. The regenerative braking rate reaches 53%.

Abstract: This paper introduces the smart substation hardware-in-loop simulation training system structure based on the analysis of the smart substation simulation training requirements. The training system scheme has been designed according to the different training requirements to support training of staffs in smart substation for operating and maintenance in all possible ways. Combining with the practical solutions, the application of the training system will be introduced. This design scheme will take important effect in the development of smart substation and its operating and maintenance training.

Abstract: Due to the features of complicated test environment, variable parameters, and limited conditions in real car experiment, it has proposed a Hardware-in-Loop test platform in this paper for Hydrogen Management System (Short for HMS) based on hardware of NI PXI and software of NI Labview to plug-in fuel cell vehicle. According to HMS’s control strategy, I/O signal map, CAN communication and sensor characteristics, it has designed the hardware configuration, software program, test interface, and rapidly made validation to control logic and fault diagnosis of Hydrogen Management Unit (Short for HMU). The experiment result shows that this test platform is effective for HMU control logic validation, system status monitor, fault injection, fault tracing, and it can shorten the vehicle research and development cycle, reduce the development cost, optimize test environment and promise safety for test engineer. This test platform will make good effect to vehicle electrical system development and supply reference for vehicle test.

Abstract: A rapid R&D Process is produced in eddy current detection using hardware-in-loop simulation. Inspired by software and hardware concurrent exploitation method in software engineering, we explore a new top-down design method in Proteus environments. Data acquisition and data-out devices which can work in Proteus environments are designed, including the digital filter and coherent detection procedures for eddy current detection. By putting the spiral development of software engineering into the design process of the hardware projects, which uses Proteus as a system prototype development platform, unifies the gap between field experiment and the software simulation by using hardware-in- loop method and accelerates design schedule. In this way, rapid eddy current detection prototyping can be designed very soon, and it is useful for system-level devices design in eddy current detection. The practice proves that this method can greatly shorten the product development cycle and reduce development cost for system-level devices design in eddy current detection.