介绍了一种基于NIOSII软核的医用嵌入式主控系统的设计方法。从系统的总线时序、时钟架构以及复位管理几个方面详细探讨了可编程片上系统(System On a Programmable Chip,SOPC)的优化措施,并针对性的就提升系统实时性和稳定性提出了几...介绍了一种基于NIOSII软核的医用嵌入式主控系统的设计方法。从系统的总线时序、时钟架构以及复位管理几个方面详细探讨了可编程片上系统(System On a Programmable Chip,SOPC)的优化措施,并针对性的就提升系统实时性和稳定性提出了几个解决方案。最后根据系统调试经验,从自定义逻辑、自定义指令以及紧耦合存储器的实际运用中总结了几种有效的提升系统执行效率的方法。展开更多
This paper proposes a new battery management system （BMS） based on a master-slave control mode for multi-cell li-ion battery packs. The proposed BMS can be applied in li-ion battery packs with any cell number. The w...This paper proposes a new battery management system （BMS） based on a master-slave control mode for multi-cell li-ion battery packs. The proposed BMS can be applied in li-ion battery packs with any cell number. The whole system is composed of a master processor and a string of slave manager cells （SMCs）. Each battery cell corresponds to an SMC. Unlike the conventional BMS, the proposed one has a novel method for communication, and it collects the battery status information in a direct and simple way. An SMC communicates with its adjacent counterparts to transfer the battery information as well as the commands from the master processor. The nethermost SMC communicates with the master processor directly. This method allows the battery management chips to be implemented in a standard CMOS （ complementary metal-oxide-semiconductor transistor） process. A testing chip is fabricated in the CSMC 0.5 μm 5 V N-well CMOS process. The testing results verify that the proposed method for data communication and the battery management system can protect and manage multi-cell li-ion battery packs.展开更多
This paper designs a joint controller/observer framework using a state dependent Riccati equation(SDRE)approach for an active transfemoral prosthesis system.An integral state control technique is utilized to design a ...This paper designs a joint controller/observer framework using a state dependent Riccati equation(SDRE)approach for an active transfemoral prosthesis system.An integral state control technique is utilized to design a tracking controller for a robot/prosthesis system.This framework promises a systematic flexible design using which multiple design specifications such as robustness,state estimation,and control optimality are achieved without the need for model linearization.Performance of the proposed approach is demonstrated through simulation studies,which show improvements versus a robust adaptive impedance controller and an extended Kalman filter-based state estimation method.Numerical results confirm the benefits of our method over the above-mentioned approaches with regard to control optimality and state estimation.展开更多
The logic of hegemonic domination that was established in Colombia and in Latin America after the Conquest is based on a scheme of elitist power. Using the perspective of the Italian sociologist Vilfredo Pareto, we ca...The logic of hegemonic domination that was established in Colombia and in Latin America after the Conquest is based on a scheme of elitist power. Using the perspective of the Italian sociologist Vilfredo Pareto, we can classify these elites in lions or foxes. In the first case, they use the force and the violence （the Macht of Weber） to impose their sovereignty; in the second case, they use persuasion and the masquerade （the Herrschaft）---the propaganda. This power is based on a more stable legitimacy and is able to transform itself in a matrix-effect reality. This form of social control has allowed the Colombian （and Latin American） 61ites the uncontrolled starvation of the natural resources found in these territories, under the influence of a wild capitalism which is strictly linked to the mass media community of the continent. This paper will expose the panorama of community media with an ethnic perspective in Colombia that hopefully works as process to facilitate the building of social links based on dialogue, reconciliation, respect, and participation, acting as watchdog of economic and political power, reporting the injustice and looking for peace solution in the region.展开更多
This paper proposes a control strategy that can realize seamless microgrid operation mode transition between grid-connected operation and stand-alone operation.The scenario of a microgrid based on master-slave control...This paper proposes a control strategy that can realize seamless microgrid operation mode transition between grid-connected operation and stand-alone operation.The scenario of a microgrid based on master-slave control is considered,where the master distributed generation(DG) unit operates in different control schemes in different microgrid operation modes,while other slave DG units operate with power/current control all the time.The proposed control strategy focuses on the master DG unit,and contains the control state/reference compensation algorithm and separation switch control logic.The proposed method can effectively reduce the impact on the critical loads and DG units caused by microgrid operation mode transitions.展开更多
文摘介绍了一种基于NIOSII软核的医用嵌入式主控系统的设计方法。从系统的总线时序、时钟架构以及复位管理几个方面详细探讨了可编程片上系统(System On a Programmable Chip,SOPC)的优化措施,并针对性的就提升系统实时性和稳定性提出了几个解决方案。最后根据系统调试经验,从自定义逻辑、自定义指令以及紧耦合存储器的实际运用中总结了几种有效的提升系统执行效率的方法。
基金The Key Science and Technology Project of Zhejiang Province(No.2007C21021)
文摘This paper proposes a new battery management system （BMS） based on a master-slave control mode for multi-cell li-ion battery packs. The proposed BMS can be applied in li-ion battery packs with any cell number. The whole system is composed of a master processor and a string of slave manager cells （SMCs）. Each battery cell corresponds to an SMC. Unlike the conventional BMS, the proposed one has a novel method for communication, and it collects the battery status information in a direct and simple way. An SMC communicates with its adjacent counterparts to transfer the battery information as well as the commands from the master processor. The nethermost SMC communicates with the master processor directly. This method allows the battery management chips to be implemented in a standard CMOS （ complementary metal-oxide-semiconductor transistor） process. A testing chip is fabricated in the CSMC 0.5 μm 5 V N-well CMOS process. The testing results verify that the proposed method for data communication and the battery management system can protect and manage multi-cell li-ion battery packs.
文摘This paper designs a joint controller/observer framework using a state dependent Riccati equation(SDRE)approach for an active transfemoral prosthesis system.An integral state control technique is utilized to design a tracking controller for a robot/prosthesis system.This framework promises a systematic flexible design using which multiple design specifications such as robustness,state estimation,and control optimality are achieved without the need for model linearization.Performance of the proposed approach is demonstrated through simulation studies,which show improvements versus a robust adaptive impedance controller and an extended Kalman filter-based state estimation method.Numerical results confirm the benefits of our method over the above-mentioned approaches with regard to control optimality and state estimation.
文摘The logic of hegemonic domination that was established in Colombia and in Latin America after the Conquest is based on a scheme of elitist power. Using the perspective of the Italian sociologist Vilfredo Pareto, we can classify these elites in lions or foxes. In the first case, they use the force and the violence （the Macht of Weber） to impose their sovereignty; in the second case, they use persuasion and the masquerade （the Herrschaft）---the propaganda. This power is based on a more stable legitimacy and is able to transform itself in a matrix-effect reality. This form of social control has allowed the Colombian （and Latin American） 61ites the uncontrolled starvation of the natural resources found in these territories, under the influence of a wild capitalism which is strictly linked to the mass media community of the continent. This paper will expose the panorama of community media with an ethnic perspective in Colombia that hopefully works as process to facilitate the building of social links based on dialogue, reconciliation, respect, and participation, acting as watchdog of economic and political power, reporting the injustice and looking for peace solution in the region.
基金supported by the National Basic Research Program of China ("973" Project) (Grant No. 2009CB219700)the National Natural Science Foundation of China (Grant No. 50837001)
文摘This paper proposes a control strategy that can realize seamless microgrid operation mode transition between grid-connected operation and stand-alone operation.The scenario of a microgrid based on master-slave control is considered,where the master distributed generation(DG) unit operates in different control schemes in different microgrid operation modes,while other slave DG units operate with power/current control all the time.The proposed control strategy focuses on the master DG unit,and contains the control state/reference compensation algorithm and separation switch control logic.The proposed method can effectively reduce the impact on the critical loads and DG units caused by microgrid operation mode transitions.
