The Second System Design of the Second Research Academy of CASIC

Beijing, China

The Second System Design of the Second Research Academy of CASIC

Beijing, China
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Zhang S.,Harbin Institute of Technology | Cao X.,Harbin Institute of Technology | Luan Y.,The Second System Design of the Second Research Academy of CASIC | Ma X.,Harbin Institute of Technology | And 2 more authors.
Journal of Materials Science and Technology | Year: 2011

Considering the unique properties of small spacecraft, such as light weight, low power-consumption and high heat flux density, a new kind of lightweight boron carbide (B4C) radiation-protection coating material was proposed. New techniques for preparing LSMO thermal control coating and B4C radiation-protection coating were developed. The sample piece of multi-functional structure was manufactured by using the proposed materials, and a series of performance tests, such as thermal control and radiation-protection behaviors were evaluated. Test results show that: the emissivity of the multi-functional structure varies from 0.42 to 0.86 at 240 K to 353 K and the phase transition temperature is about 260 K. The electron radiation-protection ability of the multi-functional structure is 3.3 times better than that of Al material. The performance index of this multi-functional structure can meet the requirements for space application in on-board electronic equipment. © 2011 The Chinese Society for Metals.


Gao C.-S.,Harbin Institute of Technology | Gao C.-S.,The Second System Design of the Second Research Academy of CASIC | Li J.-L.,The Second System Design of the Second Research Academy of CASIC | Jing W.-X.,Harbin Institute of Technology | Li R.-K.,Harbin Institute of Technology
Binggong Xuebao/Acta Armamentarii | Year: 2011

Based on the inversion technology, tracking control problems on the pitch and yaw channel of the mass moment missile with dual-moving masses are solved. Based on the established affine control model, and taking into consideration of the uncertain factors such as moving mass's velocity, acceleration, guides and so on, the robust adaptive inverse control law is given. To solve the calculating expansion problem that exists in backstepping methodology, a sliding mode filter to estimate the derivative of the virtual control variable is designed. Since the gain coefficient derives from backstepping can't guarantee the ideal performance index, genetic algorithm is used to optimize the controller parameters. Simulation results demonstrate that the algorithm is effective.


Gao C.-S.,Harbin Institute of Technology | Gao C.-S.,The Second System Design of the Second Research Academy of CASIC | Li J.-L.,The Second System Design of the Second Research Academy of CASIC | Jing W.-X.,Harbin Institute of Technology | Li R.-K.,Harbin Institute of Technology
Yuhang Xuebao/Journal of Astronautics | Year: 2010

Moving mass control is one of the most remarkable aspects in the field of control technology of missile in recent years. In this method, the moving mass is adopted to control the flight of the missile. The disadvantages of traditional pneumatic actuator control for missiles are overcome including slow response, complex aerodynamic shape and rudder surface ablation etc. Therefore it can be used in the field of hypersonic flight control within the atmosphere. In this paper, the principle and applications of moving mass technology were described, development of moving mass control was reviewed, research trend including the overall layout, dynamic modeling, control system design were analyzed, Several problems were mentioned for relevant personnel, these still need to be solved.

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