To solve the issue of downloading speed and application scenarios limitation of current JTAGLink debugger, this paper presents a new scheme of ARM debugger with the feature of Ethemet interface implemented by pure har...To solve the issue of downloading speed and application scenarios limitation of current JTAGLink debugger, this paper presents a new scheme of ARM debugger with the feature of Ethemet interface implemented by pure hardware logic design. This paper outlines the principle of the scheme, blocks of logic design, and protocols design. The scheme provides higher downloading speed, wider flexibility on application, and improves work efficiency evidently. Key words： JTAGLink Debugger; Ethernet; FPGA; Logic Design展开更多
The NSLS-II （National Synchrotron Light Source II） is a state-of-the-art 3 GeV third generation light source currently under integrated testing and commissioning at Brook_haven National Laboratory. The vacuum system...The NSLS-II （National Synchrotron Light Source II） is a state-of-the-art 3 GeV third generation light source currently under integrated testing and commissioning at Brook_haven National Laboratory. The vacuum systems are monitored by vacuum gauges and ion pump current. The gate valves are controlled by PLC （programmable logic controllers） using voting scheme. EPICS （Experimental Physics and Industrial Control System） application codes provide the high level monitoring and control through the input-output controllers. This paper will discuss the commissioning status of the various aspects of vacuum control system.展开更多
In the future, the power quality will decrease by the introduction of a lot of renewable energy sources. The topic of this research is a new method of operation of PCS （power conditioning systems） in the future dist...In the future, the power quality will decrease by the introduction of a lot of renewable energy sources. The topic of this research is a new method of operation of PCS （power conditioning systems） in the future distribution system. The purpose of this research is development of PCS with a function of improvement of the distribution system. Therefore, the authors propose a method of the power quality improvement of the distribution system by PCS. In addition, the authors construct the control logic to use in PCS The control logic suggests adding harmonic restraint function to conventional control. These were verified by simulation and an experiment. As the results, we confirmed that basic operation of PCS being carried out, harmonics were restrained, and power quality had improved.展开更多
文摘To solve the issue of downloading speed and application scenarios limitation of current JTAGLink debugger, this paper presents a new scheme of ARM debugger with the feature of Ethemet interface implemented by pure hardware logic design. This paper outlines the principle of the scheme, blocks of logic design, and protocols design. The scheme provides higher downloading speed, wider flexibility on application, and improves work efficiency evidently. Key words： JTAGLink Debugger; Ethernet; FPGA; Logic Design
文摘The NSLS-II （National Synchrotron Light Source II） is a state-of-the-art 3 GeV third generation light source currently under integrated testing and commissioning at Brook_haven National Laboratory. The vacuum systems are monitored by vacuum gauges and ion pump current. The gate valves are controlled by PLC （programmable logic controllers） using voting scheme. EPICS （Experimental Physics and Industrial Control System） application codes provide the high level monitoring and control through the input-output controllers. This paper will discuss the commissioning status of the various aspects of vacuum control system.
文摘In the future, the power quality will decrease by the introduction of a lot of renewable energy sources. The topic of this research is a new method of operation of PCS （power conditioning systems） in the future distribution system. The purpose of this research is development of PCS with a function of improvement of the distribution system. Therefore, the authors propose a method of the power quality improvement of the distribution system by PCS. In addition, the authors construct the control logic to use in PCS The control logic suggests adding harmonic restraint function to conventional control. These were verified by simulation and an experiment. As the results, we confirmed that basic operation of PCS being carried out, harmonics were restrained, and power quality had improved.
