The derivation, implementation and testing of an active surge controller for a centrifugal compressor is presented in this chapter. The control method proposed here employs the thrust AMB to servo control the axial clearance between the impeller tip and the static shroud. Through the modulation of the impeller axial position, the disturbances associated with the initiation of the surge instability can be counteracted, and surge can be suppressed before it reaches the full amplitude of the limit cycle. The surge controller derived in this chapter is first tested in simulation to verify the theory and assumptions needed for the design of the control algorithm, and then implemented on the experimental compressor test rig in order to validate the theory and demonstrate the effectiveness of the control method in an actual industrial compressor.

关键词：控制器；压缩机；喘振控制

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In the first part of the chapter, the general features of MPC were presented. Then the basic theory of GPC was described. The method has been easily implemented on a computer. The GPC algorithms have been programmed using MATLAB?. Simulations of simple systems have confirmed that the results are consistent with others presented in papers from the literature [136, 141]. The unconstrained and constrained cases of GPC were reviewed. This chapter also has shown a method for optimum adjustment of the parameters of the GPC controller, where the selection of the appropriate values of these parameters yields an improved response of the linear SISO model of the hydroelectric plant.

关键词：控制器；模型；预测

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Compare the effectiveness and subsequent healthcare use associated with early physical therapy access compared with a stepped usual care approach based on current low back pain management guidelines. SCOPE: Active duty Soldiers with low back pain 1 year follow-up period No research findings to report at this time as we are early in the recruitment/enrollment process. During the one year period described in this report, the majority of the time was spent on attaining IRB approval, hiring research personnel, and adequate training to begin the research study. All plans were in place and the study was ready to begin enrollment in in March 2012. Not enough data has been collected from which to make any conclusions or summarize any substantial findings.

关键词：物理治疗;现役军队人员;招聘;低背部疼痛;初级护理

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Defuzzification has long been a bottleneck for fast implementations of fuzzy logic controllers, due to the large number of computationally expensive multiplication and division operations that are required. In this paper, we report a high-speed fuzzy inferential system based on log-domain arithmetic, which only requires addition, subtraction and multiplexing operations. The system is implemented on a Xilinx Virtex-II FPGA with a processing speed of 67.6 MFLIPS and a maximum combinational path delay of 4.2 ns. A pipelined version of the controller is also implemented, which achieves a speed of 248.7 MFLIPS. Although a small approximation error is introduced, software simulation and hardware implementation on FPGA confirm high similarity of the outputs for typical and log-domain control surfaces and a number of second-order plants.

关键词：控制器；现场可编程门阵列；快速模糊控制；对数域

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Digital remote manual control systems are no less complicated than automatic control. Engineers have to overcome number of unique problems. Mechanical parts have to respond to digital signals transferred through wireless connection. Digital control algorithms have to correctly translate the movement of controls at remote station to signals in a way that a operator has a proper feeling of control. The Master Control System presented connects the features of a Drive-By-Wire control system with wireless connection. Main focus is put on the Master controller and its algorithms of input - output translation, that give finer control for an operator. In addition, computer controlled intervention algorithms are proposed that can increase safety of the subject vehicle. All that is done on basis of a small two-wheeled robot and a closed environment of small playground with radio interface allowing wireless connection with the robot, and a vision interface equipped with a camera serving as a visual feedback. Is it a great environment for theoretical considerations, testing and implementation. Modular design of the environment additionally allows the control of whole Mobile Robot Group, not only one robot subject. Moreover sented results can be applied more widely in controllers for cars or other wheeled or tracked vehicles.

关键词：控制器；视觉系统；有限区域；分布式控制系统；移动机器人

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Flapping wing micro air vehicles (FWMAV) have been a growing field in the research of micro air vehicles, but little emphasis has been placed on control theory. Research is ongoing on how to power FWMAVs where mass is a major area of concern. However, there is little research on the power requirements for the controllers to manipulate the wings of a FWMAV. A novel control theory, BABM, allows two actuators to produce forces and moments in five of the FWMAV's six DOF. Several FWMAV prototypes were constructed and tested on a six-component balance. Data was collected for varying control parameters and the generated forces were measured. The results mapped control parameters to different degrees of freedom. The force required to generate desirable motion and power required to generate that motion was plotted and evaluated. These results can be used to generate a minimum power controller in the future. The results showed that BABM control required a 26increase in power in order to increase lift by 22. The lift increase was accomplished by increasing the amplitude by 10over the established baseline. The data also showed that varying some parameters actually decreased the power requirements, allowing other parameters to increase which in turn would enable more complex maneuvers. For instance, an asymmetric change in split-cycle shift of + or - 0.25 decreased the power required by 14and decreased the lift by 25. Changing the stroke bias to + or - 0.75 had a negligible effect on power but decreased the lift by 27. Furthermore, the data identified certain parameter combinations which resulted in other forces and moments. These results identified how BABM be used as a control theory for the control of FWMAVs.

关键词：控制器；二次谐波；微型扑翼飞行器；偏置调制控制

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 Radiosensitization was measured in DU145 cells and PC-3 cells by H2AX foci formation and disappearance, quantitation of olive tail moment in comet assay, clonogenic cell survival and apoptosis assay. Additionally, qPCR was performed to assess changes in DNA repair gene expression following radiation and/or drug treatments. H2AX foci assays revealed that ABT888 in combination with radiation therapy (RT) increased the level of DNA damage compared to drug alone and RTX alone in both cell lines, and that the combination inhibited DNA repair in PC-3 cells but not in DU145 cells. Apoptosis assays indicated that DU145 cells were more susceptible than PC-3 cells to apoptosis induction by monotherapy with ABT888, docetaxel or RT. However, triple modality treatment with ABT888, docetaxel and RT increased apoptosis similarly in both cell lines. Clonogeic assays revealed that although DU145 was more radioresistant than PC-3 cells, ABT888 similarly radiosensitized both cell lines. qPCR revealed prolonged upregulation of the RAD family members in PC-3 cells. In vivo studies of tumor growth confirmed that the PC-3 xenografts, lacking PTEN, were more sensitive to RT than the DU145 xenografts.

关键词：前列腺癌;凋亡;分析;脱氧核糖核的酸;抑制;肿瘤;辐射剂量

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The results have shown how MLD-GPC can be applied to a hydroelectric pumped-storage station to improve its fast-response characteristics. The direct transient responses are improved compared with CGPC, when the multivariable nature of the plant is taken explicitly into account. In particular, selecting different values of X and different predictive models, depending on the number of units active, allows MLD- GPC to produce a fast response across the operational range. Inclusion of rate and saturation constraints in both GPC controllers yields a fast, well-damped response in the common case when only a single unit is in operation, without compromising stability when multiple units are online.

关键词：控制器；混合逻辑动态系统；预测控制器

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It has the better ability of global searching and has been successfully applied in many areas of engineering and science. Simulations are presented assessing the performance of the proposed fractional algorithms.

关键词：控制器；PSO算法；热扩散系统；分数阶控制器；调谐

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This paper proposes a vision-based force controller for a haptic bilateral control system. According to the particular objects movement, a haptic bilateral system can be navigated in a specific direction by the proposed vision-based force controller. The generated force is treated as a disturbance in the bilateral control strategy. In the paper, the scaling effect which involves the distance between the object and the manipulator is considered as a key feature to be studied. The same magnification factor of vertical movement will be used for the horizontal displacement. The performance of this scaling effect produced by the visual force to the bilateral control system will be examined and analyzed through the actual experiments.

关键词：控制器；触觉；双边控制系统；视觉力；缩放

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