The Thematic Forum on People-to-People Connectivity of the Second Belt and Road Forum for International Cooperation was held at the China National Convention Center in Beijing on April 25th, 2019. The picture shows th...The Thematic Forum on People-to-People Connectivity of the Second Belt and Road Forum for International Cooperation was held at the China National Convention Center in Beijing on April 25th, 2019. The picture shows the scene at the venue.Song Taoy the Minister of the International Department of the CPC Central Committee delivers a keynote speech at the Thematic Forum on People-to-People Connectivlity of the Second Belt and Road Forum for International Cooperation on April 25th, 2019.展开更多
Distinguished Guests,Ladies and gentlemen,Dear friends,Good afternoon.Let me begin by extending my warmest welcome to all of you to this thematic session on peopleto-people connectivity on behalf of the International ...Distinguished Guests,Ladies and gentlemen,Dear friends,Good afternoon.Let me begin by extending my warmest welcome to all of you to this thematic session on peopleto-people connectivity on behalf of the International Department of the CPC Central Committee,the organizer of this event.Thanks to the concerted efforts展开更多
Sichuan is the strongest province in western China, and Chengdu is the first stop of the Silk Road and the Yangtze River Economic Zone. Qingbaijiang,the inception point of the Chengdu-Europe express railway, is an imp...Sichuan is the strongest province in western China, and Chengdu is the first stop of the Silk Road and the Yangtze River Economic Zone. Qingbaijiang,the inception point of the Chengdu-Europe express railway, is an important source of artifacts from the ancient Sichuan civilization, and Sichuan province, the land of abundance, is the cradle and base of ping-pong. Chengdu has been connected to展开更多
Because of the tire nonlinearity and vehicle＇s parameters＇uncertainties,robust control methods based on the worst cases,such as H_∞,μsynthesis,have been widely used in active front steering control,however,in orde...Because of the tire nonlinearity and vehicle＇s parameters＇uncertainties,robust control methods based on the worst cases,such as H_∞,μsynthesis,have been widely used in active front steering control,however,in order to guarantee the stability of active front steering system（AFS）controller,the robust control is at the cost of performance so that the robust controller is a little conservative and has low performance for AFS control.In this paper,a generalized internal model robust control（GIMC）that can overcome the contradiction between performance and stability is used in the AFS control.In GIMC,the Youla parameterization is used in an improved way.And GIMC controller includes two sections：a high performance controller designed for the nominal vehicle model and a robust controller compensating the vehicle parameters＇uncertainties and some external disturbances.Simulations of double lane change（DLC）maneuver and that of braking on split-μroad are conducted to compare the performance and stability of the GIMC control,the nominal performance PID controller and the H_∞controller.Simulation results show that the high nominal performance PID controller will be unstable under some extreme situations because of large vehicle＇s parameters variations,H_∞controller is conservative so that the performance is a little low,and only the GIMC controller overcomes the contradiction between performance and robustness,which can both ensure the stability of the AFS controller and guarantee the high performance of the AFS controller.Therefore,the GIMC method proposed for AFS can overcome some disadvantages of control methods used by current AFS system,that is,can solve the instability of PID or LQP control methods and the low performance of the standard H_∞controller.展开更多
WEARING pink relay belts, women athletes with yellow, white and black skin were waiting in order on the starting line. It was February 20, 1994, and the Ninth Great Wall Friendship Ekiden and the Fourth International ...WEARING pink relay belts, women athletes with yellow, white and black skin were waiting in order on the starting line. It was February 20, 1994, and the Ninth Great Wall Friendship Ekiden and the Fourth International Women’s Ekiden were being held in Beijing. Both the start and finish lines were located inside the National Olympic Sports Center. Passing the Second Ring Road, Chang’an Street and Tian’anmen Square, the whole course was 42.195 kilometers long, divided into six relay sections of 5, 10, 5, 10, 5, and 7.195 kilometers, according to the international standard. About 100 women athletes were taking part in the International Women’s Ekiden.展开更多
The Belt and Road Initiative is China's magnificent economic diplomacy practice in the new era, does not intend to challenge and replace the existing international system, but helps promote its reform and improvem...The Belt and Road Initiative is China's magnificent economic diplomacy practice in the new era, does not intend to challenge and replace the existing international system, but helps promote its reform and improvement. There is a close interaction between the economic diplomacy and the international system. The economic diplomacy operates in a specific international system and imposes a major impact on the maintenance and changes of the international system. Meanwhile, the Belt and Road construction will also face some challenges of this system. To make efforts to create conditions for keeping a "balanced" economic diplomacy will effectively resolve this system risks faced by the Belt and Road Initiative.展开更多
文摘The Thematic Forum on People-to-People Connectivity of the Second Belt and Road Forum for International Cooperation was held at the China National Convention Center in Beijing on April 25th, 2019. The picture shows the scene at the venue.Song Taoy the Minister of the International Department of the CPC Central Committee delivers a keynote speech at the Thematic Forum on People-to-People Connectivlity of the Second Belt and Road Forum for International Cooperation on April 25th, 2019.
文摘Distinguished Guests,Ladies and gentlemen,Dear friends,Good afternoon.Let me begin by extending my warmest welcome to all of you to this thematic session on peopleto-people connectivity on behalf of the International Department of the CPC Central Committee,the organizer of this event.Thanks to the concerted efforts
文摘Sichuan is the strongest province in western China, and Chengdu is the first stop of the Silk Road and the Yangtze River Economic Zone. Qingbaijiang,the inception point of the Chengdu-Europe express railway, is an important source of artifacts from the ancient Sichuan civilization, and Sichuan province, the land of abundance, is the cradle and base of ping-pong. Chengdu has been connected to
基金Supported by National Natural Science Foundation of China(Grant Nos.11072106,51375009)
文摘Because of the tire nonlinearity and vehicle＇s parameters＇uncertainties,robust control methods based on the worst cases,such as H_∞,μsynthesis,have been widely used in active front steering control,however,in order to guarantee the stability of active front steering system（AFS）controller,the robust control is at the cost of performance so that the robust controller is a little conservative and has low performance for AFS control.In this paper,a generalized internal model robust control（GIMC）that can overcome the contradiction between performance and stability is used in the AFS control.In GIMC,the Youla parameterization is used in an improved way.And GIMC controller includes two sections：a high performance controller designed for the nominal vehicle model and a robust controller compensating the vehicle parameters＇uncertainties and some external disturbances.Simulations of double lane change（DLC）maneuver and that of braking on split-μroad are conducted to compare the performance and stability of the GIMC control,the nominal performance PID controller and the H_∞controller.Simulation results show that the high nominal performance PID controller will be unstable under some extreme situations because of large vehicle＇s parameters variations,H_∞controller is conservative so that the performance is a little low,and only the GIMC controller overcomes the contradiction between performance and robustness,which can both ensure the stability of the AFS controller and guarantee the high performance of the AFS controller.Therefore,the GIMC method proposed for AFS can overcome some disadvantages of control methods used by current AFS system,that is,can solve the instability of PID or LQP control methods and the low performance of the standard H_∞controller.
文摘WEARING pink relay belts, women athletes with yellow, white and black skin were waiting in order on the starting line. It was February 20, 1994, and the Ninth Great Wall Friendship Ekiden and the Fourth International Women’s Ekiden were being held in Beijing. Both the start and finish lines were located inside the National Olympic Sports Center. Passing the Second Ring Road, Chang’an Street and Tian’anmen Square, the whole course was 42.195 kilometers long, divided into six relay sections of 5, 10, 5, 10, 5, and 7.195 kilometers, according to the international standard. About 100 women athletes were taking part in the International Women’s Ekiden.
文摘The Belt and Road Initiative is China's magnificent economic diplomacy practice in the new era, does not intend to challenge and replace the existing international system, but helps promote its reform and improvement. There is a close interaction between the economic diplomacy and the international system. The economic diplomacy operates in a specific international system and imposes a major impact on the maintenance and changes of the international system. Meanwhile, the Belt and Road construction will also face some challenges of this system. To make efforts to create conditions for keeping a "balanced" economic diplomacy will effectively resolve this system risks faced by the Belt and Road Initiative.
