Desulfurization by powder injection in RH is an important process to produce ultra-low-sulfur steel which has been widely applied to marine industry, aviation industry and petroleum transportation industry. In this pa...
详细信息
One of the most important characteristic of triggered vacuum switch (TVS) is the breakdown voltage affecting the operation reliability of TVS. It depends on features, such as electrode material, electrode shape, gap d...
详细信息
The polarization of radar antenna vary with scan direction. This phenomenon is called Spatial Polarization Characteristic (SPC) of antenna. Based on the SPC of single polarized antenna, a novel polarization estimation...
详细信息
Actuator saturation is a ubiquitous phenomenon when the outputs of controllers reach the actuators' limits, and then the dynamic performances become worse. In this paper, an anti-windup compensator (A WC) is desig...
详细信息
ISBN:
(纸本)9781479913022
Actuator saturation is a ubiquitous phenomenon when the outputs of controllers reach the actuators' limits, and then the dynamic performances become worse. In this paper, an anti-windup compensator (A WC) is designed for the controller of the superconducting magnetic energy storage (SMES) system to increase power system stability. First, power system with actuator saturation is modeled to formulate the problem mathematically. Then, uniform anti-windup scheme is studied and compensator is designed with method of linear matrix inequality (LMI). Instead of replacing the traditional controller with a new one, this paper makes use of the difference between the controller's and the actuator's output to mitigate the adverse influence of saturation, which leaves the original controller unaffected. Hence, this method can be used to enhance power system stability under the same capacity with its unsaturated controller so that SMES is utilized more efficiently.
The polarization of radar antenna vary with scan direction. This phenomenon is called Spatial Polarization Characteristic (SPC) of antenna. Based on the SPC of single polarized antenna, a novel polarization estimation...
详细信息
Powder injection desulfurization (PID) in RH was always applied to produce ultra-low sulfur steel, which was used for aerospace industry, marine and petroleum industry. The process of PID was divided into two processe...
详细信息
ISBN:
(纸本)9781118605981
Powder injection desulfurization (PID) in RH was always applied to produce ultra-low sulfur steel, which was used for aerospace industry, marine and petroleum industry. The process of PID was divided into two processes: one was flow-reaction desulfurization and the other one was interface-reaction desulfurization, especially the flow-reaction desulfurization had a huge impact on desulfurization efficiency of RH. In this paper, based on similarity principle, including geometric similarity, dynamic similarity, vacuum similarity and slag-metal interface similarity, a new physical simulation experiment in which water, nitrogen and one special kind of oil were chosen as the substitutes of liquid steel, argon and desulfurizer was carried out to study on the influence rules of vacuum chamber pressure, driving gas flow and flow-reaction desulfurization efficiency, which would have an important guiding significance to the practical production.
Tundish is one essential device for getting high quality steel. Reasonable tundish inner structure can increase tundish space utilization rate, improve the inclusion removal, and reduce the cost of production. In this...
详细信息
Liquid core length is a very important parameter of the process of continuous casting, which directly reflects the cooling status in secondary cooling zone and solidification rate of the slab. In this paper, the bille...
详细信息
ISBN:
(纸本)9781118605745
Liquid core length is a very important parameter of the process of continuous casting, which directly reflects the cooling status in secondary cooling zone and solidification rate of the slab. In this paper, the billet caster in some steel plant in China was chosen as the prototype of simulating. A numerical simulating model for calculating the liquid core length of continuous casting billet was built by ProCAST software, which was verified reasonable and accurate by pin-shooting technique. Based on the model, the relationships between casting speed, casting temperature and liquid core length of casting billet were found, which was very practically useful for the workers on sit to improve casting billet quality.
A DC-excited high torque electromagnetic brake has been designed for high-speed train in WHMFC. An electromagnetic-thermal analysis model for electromagnetic brake analysis has been developed, taking into account the ...
详细信息
Non-rigid image registration plays an important role in medical imaging. One disadvantage of classic Demons algorithm is that the topological preservation can not be ensured, and it can only deal with the single modal...
详细信息
暂无评论