For the advantages of easy realization and rapidly intelligent response,the one-cycle control was applied in five-phase six-leg switching power amplifier for magnetic bearing.This paper improves the one-cycle control ...For the advantages of easy realization and rapidly intelligent response,the one-cycle control was applied in five-phase six-leg switching power amplifier for magnetic bearing.This paper improves the one-cycle control considering resistance voltage drop and derives its mathematical models.The improved algorithm is compared with the former one.The simulation and experimental results show that the improved algorithm can effectively reduce the output current ripple,achieve good tracking of the given current,improve the control accuracy,and verify the effectiveness and superiority of the method.展开更多
CHINA’S economic growth has provided business opportunities for the Netherlands,"said Andre Driessen,deputy head of mission at the Royal Netherlands Embassy to China.He added that China and the Netherlands were ...CHINA’S economic growth has provided business opportunities for the Netherlands,"said Andre Driessen,deputy head of mission at the Royal Netherlands Embassy to China.He added that China and the Netherlands were jointly building an extensive cooperation partnership and that much headway had been made展开更多
WHEN the 13th-century Italian merchant and traveler Marco Polo fi nished his famous book The Travels of Marco Polo,he couldn’t have imagined that seven centuries later his adventures in China would be adapted into a ...WHEN the 13th-century Italian merchant and traveler Marco Polo fi nished his famous book The Travels of Marco Polo,he couldn’t have imagined that seven centuries later his adventures in China would be adapted into a seven-hour fi lm.Made in 1982,it was not展开更多
CHINA and Denmark have maintained highlevel contacts in 2014.In April,at the invitation of Chinese President Xi Jinping,Queen Margrethe Ⅱ of Denmark paid her second visit to China as the head of state.In September,Da...CHINA and Denmark have maintained highlevel contacts in 2014.In April,at the invitation of Chinese President Xi Jinping,Queen Margrethe Ⅱ of Denmark paid her second visit to China as the head of state.In September,Danish Prime Minister Helle Thorning-Schmidt visited China along with Danish Climate and Energy展开更多
WU Yu,37,is an English teacher and avid globetrotter.He first became a backpacker in 2003,after finding companions online to journey with him to a domestic destination.Later he traveled the world as a couch surfer,and...WU Yu,37,is an English teacher and avid globetrotter.He first became a backpacker in 2003,after finding companions online to journey with him to a domestic destination.Later he traveled the world as a couch surfer,and also played host to fellow wayfarers at his home.Over the past decade,Wu Yu has visited more than 20 countries and regions.展开更多
DENMARK was among the first Western countries to establish diplomatic ties with China 65 years ago. Over the years, the two sides have developed close cooperation and strong friendship. In 2008, then Danish Prime Min...DENMARK was among the first Western countries to establish diplomatic ties with China 65 years ago. Over the years, the two sides have developed close cooperation and strong friendship. In 2008, then Danish Prime Minister Anders Fogh Rasmussen visited China and the two sides entered into a comprehensive strategic partnership.展开更多
基金supported by the National Science Foundation of China(No.51607096)。
文摘For the advantages of easy realization and rapidly intelligent response,the one-cycle control was applied in five-phase six-leg switching power amplifier for magnetic bearing.This paper improves the one-cycle control considering resistance voltage drop and derives its mathematical models.The improved algorithm is compared with the former one.The simulation and experimental results show that the improved algorithm can effectively reduce the output current ripple,achieve good tracking of the given current,improve the control accuracy,and verify the effectiveness and superiority of the method.
文摘CHINA’S economic growth has provided business opportunities for the Netherlands,"said Andre Driessen,deputy head of mission at the Royal Netherlands Embassy to China.He added that China and the Netherlands were jointly building an extensive cooperation partnership and that much headway had been made
文摘WHEN the 13th-century Italian merchant and traveler Marco Polo fi nished his famous book The Travels of Marco Polo,he couldn’t have imagined that seven centuries later his adventures in China would be adapted into a seven-hour fi lm.Made in 1982,it was not
文摘CHINA and Denmark have maintained highlevel contacts in 2014.In April,at the invitation of Chinese President Xi Jinping,Queen Margrethe Ⅱ of Denmark paid her second visit to China as the head of state.In September,Danish Prime Minister Helle Thorning-Schmidt visited China along with Danish Climate and Energy
文摘WU Yu,37,is an English teacher and avid globetrotter.He first became a backpacker in 2003,after finding companions online to journey with him to a domestic destination.Later he traveled the world as a couch surfer,and also played host to fellow wayfarers at his home.Over the past decade,Wu Yu has visited more than 20 countries and regions.
文摘DENMARK was among the first Western countries to establish diplomatic ties with China 65 years ago. Over the years, the two sides have developed close cooperation and strong friendship. In 2008, then Danish Prime Minister Anders Fogh Rasmussen visited China and the two sides entered into a comprehensive strategic partnership.
