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Design and Experimental Investigation for Subsea Control Module Test System 被引量:4
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作者 Peng Jia Zhehua Zhang +3 位作者 Xiangyu Wang Feihong Yun Honghai Wang Gang Wang 《Journal of Marine Science and Application》 CSCD 2020年第3期453-464,共12页
As a core part of subsea production systems,subsea control modules(SCMs)are costly,difficult,and expensive to install and inconvenient to use in underwater maintenance.Therefore,performance and function tests must be ... As a core part of subsea production systems,subsea control modules(SCMs)are costly,difficult,and expensive to install and inconvenient to use in underwater maintenance.Therefore,performance and function tests must be carried out before launching SCMs.This study developed a testing device and an SCM test by investigating SCMs and their underwater.The testing device includes four parts:a hydraulic station,an SCM test stand,a signal generating device,and an electronic test unit.First,the basic indices of the testing device were determined from the performance and working parameters of the SCM.Second,the design scheme of the testing device for the SCM was tentatively proposed,and each testing device was designed.Finally,a practical measurement of the SCM,in combination with the hydraulic station,SCM test stand,signal generator,electronic unit,and highpressure water tank,was carried out according to the test requirements.The measurement mainly involved equipment inspection before testing and an experimental test for the SCM.The validity and feasibility of the testing device and method were simultaneously verified through an association test. 展开更多
关键词 Subsea control module Testing device Hydraulic system Electronic control system Experimental research
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Embedded Software Control of a Hybrid Vehicle's ECU/FCM System
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作者 Robert Murphy Patrick Otoo Bobbie 《Computer Technology and Application》 2012年第1期8-15,共8页
This paper describes a research project that uses embedded systems design principles to construct and simulate an Engine Control Unit (ECU) for a hybrid car. The ECU is designed to select a fuel type based on the st... This paper describes a research project that uses embedded systems design principles to construct and simulate an Engine Control Unit (ECU) for a hybrid car. The ECU is designed to select a fuel type based on the stress level of the simulated engine. The primary goal of the project was to use a robotics kit, connected to sensors, to simulate a hybrid car under certain stress conditions such as hill climbing or full throttle. The project uses the LEGO~ Mindstorms~ NXT robotics kit combined with a Java-based firmware, a pressure sensor to simulate a gas pedal, and a tilt sensor to determine when the car is traveling uphill or downhill. The objective was to develop, through simulation, a framework for adjusting the ratios/proportions of fuel types and mixture under the stress conditions. The expected result was to establish a basis for determining the ideal/optimal fuel-mix-stress ratios on the hybrid car's performance. Using the NXT robotics kit abstracted the low level details of the embedded system design, which allowed a focus on the high level design details of the research. Also, using the NXJ Java-based firmware allowed the incorporation of object oriented design principles into the project. The paper outlines the evolution and the compromises made in the choice of hardware and software components, and describes the computations and methodologies used in the project. 展开更多
关键词 LEGO NXTTM embedded systems engine control unit NXJ Java firmware fuel control module.
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Electromagnetic Compatibility Design for Powertrain Control Module
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作者 王宇明 崔涛 +1 位作者 刘波澜 张付军 《Journal of Beijing Institute of Technology》 EI CAS 2009年第1期16-21,共6页
In order to improve the electromagnetic compatibility of powertrain control module (PCM), a system procedure of vehicular PCM electromagnetic alteration is presented in this paper. First of all, the box of the PCM i... In order to improve the electromagnetic compatibility of powertrain control module (PCM), a system procedure of vehicular PCM electromagnetic alteration is presented in this paper. First of all, the box of the PCM is divided into different cabins to eliminate interferences between power supply circuit, analog circuit and digital circuit. Secondly, the working principle and electromagnetic (EM) characters of all the signals adopted by a typical PCM are analyzed. Then according to specific electromagnetic characters, different measures are adopted in corresponding signal process circuits or signal transfer cables, such as ground layout designing, power supply protecting, signal shielding and drive cable interference suppressing. Finally, further improvement may also needed regarding to practical electromagnetic compatibility test effects. The final test shows that, with all the measures mentioned above, the conducted emission of a PCM can be reduced by 20 dB; meanwhile, the radiated emission can be reduced by 30 dB comparing to the original system. 展开更多
关键词 POWERTRAIN electronic control module electromagnetic compatibility DESIGN
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Realization of embedded control module for micro assembly line
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作者 张之敬 张高阳 金鑫 《Journal of Beijing Institute of Technology》 EI CAS 2014年第4期490-494,共5页
A modularized, network, reconfigurable architecture and design method of embedded control module is proposed. This control module uses a TMS320F2812 chip as the core, and intro- duces modularization, network, reconfig... A modularized, network, reconfigurable architecture and design method of embedded control module is proposed. This control module uses a TMS320F2812 chip as the core, and intro- duces modularization, network, reconfigurable theory to the design of control module to better meet the flexible and reconfigurable control need of assembly line. The design method of the control module is verified by constructing a control experiment based on controlling of precision x - y displace- ment platform through a CAN bus. Experimental results show that the controlling repeat position accuracy of precision x - y platform by control module is 0. 5 μm and the position error is less than 1μm which meet the needs of micro-adjustment pose of assembly line. 展开更多
关键词 micro assembly line MODULARIZATION control module
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Photo-Doped Active Electrically Controlled Terahertz Modulator
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作者 Bo Zhang Liang Zhong +1 位作者 Ting He Jing-Ling Shen 《Journal of Electronic Science and Technology》 CAS CSCD 2015年第2期113-116,共4页
We demonstrate an electric-controlled terahertz(THz) modulator which can be used to realize amplitude modulation of terahertz waves with slight photo-doping. The THz pulse transmission was efficiently modulated by e... We demonstrate an electric-controlled terahertz(THz) modulator which can be used to realize amplitude modulation of terahertz waves with slight photo-doping. The THz pulse transmission was efficiently modulated by electrically controlling the monolayer silicon-based device. The modulation depth reached 100% almost when the applied voltage was 7V at an external laser intensity of 0.6W/cm2. The saturation voltage reduced with the increase of the photo-excited intensity. In a THz continuous wave(CW)system, a significant fall in both THz transmission and reflection was also observed with the increase of applied voltage. This reduction in the THz transmission and reflection was induced by the absorption for electron injection. The results show that a high-efficiency and high modulation depth broadband electric-controlled terahertz modulator in a pure Si structure has been realized. 展开更多
关键词 modulator terahertz saturation electrically doping modulated controlled excited monolayer tunable
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Extended state observer-based pressure control for pneumatic actuator servo systems 被引量:1
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作者 John Mohorcic Lili Dong 《Control Theory and Technology》 EI CSCD 2021年第1期64-79,共16页
A pneumatic actuator is a fast and economical tool that converts compressed air into mechanical motion.In this paper,an extended state observer(ESO)-based sliding mode controller(SMC)is developed to adjust the air pre... A pneumatic actuator is a fast and economical tool that converts compressed air into mechanical motion.In this paper,an extended state observer(ESO)-based sliding mode controller(SMC)is developed to adjust the air pressure of the actua-tor for accurate position control,Specifically,an impedance control module is established to produce desired air pressure based on the relationship between forces and desired positions.Then,the ESO-based SMC is implemented to adjust the air pressure to the required level despite the presence of system uncertainties and disturbances.As a result,the position of the actuator is controlled to a setpoint through the regulation of pressure.The performance of ESO-based SMC is compared with that of a classic active disturbance rciection controller(ADRC)and a SMC.Simulation results demonstrate that the:ESO-based SMC shows comparable performance to ADRC in terms of precise pressure control.In addition,it requires the least control effort ncessary to excite valves among the three controllers.The stability of ESO based SMC is theoretically justifed through Lyapunov approach. 展开更多
关键词 Pneumatic actuator Pressure control ESO-based SMC ADRC Impedance control module Stability proof Lyapunov approach
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