With coming of the global economy era, developed countries have to abandon traditional manufacturing to lower labor costs developing countries due to rising labor costs. Chinese manufacturing industry which is called ...With coming of the global economy era, developed countries have to abandon traditional manufacturing to lower labor costs developing countries due to rising labor costs. Chinese manufacturing industry which is called ＂world factory＂ is facing upgrading technology updates, which promotes high- skilled talents upward trend in the demand for talent in an increasingly competitive speed. To adapt to this environment, corporate human resources has taken a proactive human resources strategy in the ＂ election ＂, ＂ education＂ , ＂use＂ , and ＂stay＂ , select qualified personnel, develop and motivate key employees. But the human resource management is properly and effectively crucial. In this context, we study human resource management and evaluate it： how to measure human resource management and promote the strategic objectives of the enterprise of human resource management services has important practical significance.展开更多
This paper presents a method for solving the attitude control problem of high altitude airship (HAA) with aerodynamic fin and vectored thruster control. The algorithm is based on the synthetic optimization of dynamic ...This paper presents a method for solving the attitude control problem of high altitude airship (HAA) with aerodynamic fin and vectored thruster control. The algorithm is based on the synthetic optimization of dynamic performance and energy consumption of airship. Firstly, according to the system overall configuration, the dynamic model of HAA was established and the HAA linearized model of longitudinal plane motion was obtained. Secondly, using the classic PID control theory, the HAA attitude control system was designed. Thirdly, through analyzing the dynamic performance of airship with fin or vectored thruster control, the synthetic performance index function with different weighting functions was determined. By means of optimizing the obtained performance index function, the attitude control of high altitude airship with good dynamic performance and low energy consumption was achieved. Finally, attitude control allocation strategy was designed for the airship station keeping at an altitude of 22 km. The simulation experiment proved the validity of the proposed algorithm.展开更多
文摘With coming of the global economy era, developed countries have to abandon traditional manufacturing to lower labor costs developing countries due to rising labor costs. Chinese manufacturing industry which is called ＂world factory＂ is facing upgrading technology updates, which promotes high- skilled talents upward trend in the demand for talent in an increasingly competitive speed. To adapt to this environment, corporate human resources has taken a proactive human resources strategy in the ＂ election ＂, ＂ education＂ , ＂use＂ , and ＂stay＂ , select qualified personnel, develop and motivate key employees. But the human resource management is properly and effectively crucial. In this context, we study human resource management and evaluate it： how to measure human resource management and promote the strategic objectives of the enterprise of human resource management services has important practical significance.
文摘This paper presents a method for solving the attitude control problem of high altitude airship (HAA) with aerodynamic fin and vectored thruster control. The algorithm is based on the synthetic optimization of dynamic performance and energy consumption of airship. Firstly, according to the system overall configuration, the dynamic model of HAA was established and the HAA linearized model of longitudinal plane motion was obtained. Secondly, using the classic PID control theory, the HAA attitude control system was designed. Thirdly, through analyzing the dynamic performance of airship with fin or vectored thruster control, the synthetic performance index function with different weighting functions was determined. By means of optimizing the obtained performance index function, the attitude control of high altitude airship with good dynamic performance and low energy consumption was achieved. Finally, attitude control allocation strategy was designed for the airship station keeping at an altitude of 22 km. The simulation experiment proved the validity of the proposed algorithm.
