Hybrid Electric Vehicle (HEV) becomes a popular research project all over the world because of its high efficiency and low emissions. HEV is driven by Internal Combustion (IC) engine and electric motor, and its powert...Hybrid Electric Vehicle (HEV) becomes a popular research project all over the world because of its high efficiency and low emissions. HEV is driven by Internal Combustion (IC) engine and electric motor, and its powertrain is more complex than conventional vehicle. Therefore, the complexity of a HEV powertrain demands a reliable control strategy be developed to guarantee stable and consistent operation. In this paper, EACS is proposed which takes IC engine as a main power unit and the electric motor as an assistant one. Because the fuel consumption of HEV mainly depends on IC engine, EACS restricts the IC engine to operate under the condition with favorable fuel economy. In the paper several control parameters are described such as the maximum torque, the lowest and highest desired battery state of charge (SOC), whose values will affect the performance of HEV remarkably. In addition, the test models of power units for HEV, mathematical models of transmission and vehicle dynamics for HEV are established. A forward-facing simulation software (i.e. driver-to-wheel) based on MATLAB/Simulink is developed to test the performance of EACS and determine the proper value of the control parameters. The simulation results and conclusion are also shown in the paper.展开更多
为探讨腐植酸钠对生长猪免疫水平的影响,选择24头健康体重在(26.18±1.32)kg的生长猪,随机分成2组,每组12头,一组设为试验组,另一组设为对照组。连续灌喂10 m l/kg的腐植酸钠(即腐植酸钠总含量100 mg/kg)10 d后,测定T淋巴细胞Ea玫...为探讨腐植酸钠对生长猪免疫水平的影响,选择24头健康体重在(26.18±1.32)kg的生长猪,随机分成2组,每组12头,一组设为试验组,另一组设为对照组。连续灌喂10 m l/kg的腐植酸钠(即腐植酸钠总含量100 mg/kg)10 d后,测定T淋巴细胞Ea玫瑰花环形成率和B淋巴细胞EAC玫瑰花环形成率。结果表明:灌喂腐植酸钠的健康生长猪的Ea玫瑰花环形成率明显高于对照组,差异显著(P<0.05);灌喂腐植酸钠的健康生长猪的EAC玫瑰花环形成率明显高于对照组生长猪,差异极显著(P<0.01)。表明:灌喂腐植酸钠生长猪机体的免疫水平明显提高。展开更多
文摘Hybrid Electric Vehicle (HEV) becomes a popular research project all over the world because of its high efficiency and low emissions. HEV is driven by Internal Combustion (IC) engine and electric motor, and its powertrain is more complex than conventional vehicle. Therefore, the complexity of a HEV powertrain demands a reliable control strategy be developed to guarantee stable and consistent operation. In this paper, EACS is proposed which takes IC engine as a main power unit and the electric motor as an assistant one. Because the fuel consumption of HEV mainly depends on IC engine, EACS restricts the IC engine to operate under the condition with favorable fuel economy. In the paper several control parameters are described such as the maximum torque, the lowest and highest desired battery state of charge (SOC), whose values will affect the performance of HEV remarkably. In addition, the test models of power units for HEV, mathematical models of transmission and vehicle dynamics for HEV are established. A forward-facing simulation software (i.e. driver-to-wheel) based on MATLAB/Simulink is developed to test the performance of EACS and determine the proper value of the control parameters. The simulation results and conclusion are also shown in the paper.
文摘为探讨腐植酸钠对生长猪免疫水平的影响,选择24头健康体重在(26.18±1.32)kg的生长猪,随机分成2组,每组12头,一组设为试验组,另一组设为对照组。连续灌喂10 m l/kg的腐植酸钠(即腐植酸钠总含量100 mg/kg)10 d后,测定T淋巴细胞Ea玫瑰花环形成率和B淋巴细胞EAC玫瑰花环形成率。结果表明:灌喂腐植酸钠的健康生长猪的Ea玫瑰花环形成率明显高于对照组,差异显著(P<0.05);灌喂腐植酸钠的健康生长猪的EAC玫瑰花环形成率明显高于对照组生长猪,差异极显著(P<0.01)。表明:灌喂腐植酸钠生长猪机体的免疫水平明显提高。
