Shunt active power filters have been introduced as a way to overcome the power quality problems caused by nonlinear and reactive loads [9, 14, 23]. These power electronics devices are designed with the goal of obtaining a power factor close to 1 and achieving current harmonics and reactive power compensation [5, 6, 15]. The usual approaches [5, 15] for the control of shunt active filters are based on two hierarchical control loops: an inner one that assures the desired current and an outer one in charge of determining its required shape and the appropriate power balance as well. The control structure followed in this Chapter is the one in [7], in which the current controller is composed of a feedforward action that provides very fast transient response, and also of a feedback loop which includes an odd-harmonic repetitive control that yields closed-loop stability and a very good harmonic correction performance. In turn, the outer control law is based on the appropriated computation of the amplitude of the sinusoidal current network and, aiming at a robustness improvement, this is combined with a feedback control law including an analytically tuned PI controller. However, although the control system performance is very good, it shows a dramatic performance decay when the network frequency value is not accurately known or changes in time. For a better assessment of this issue this Chapter shows the experimental behaviors under constant and varying network frequency. This performance degradation is also presented and analyzed in terms of the THD, PF and cosφ. The Chapter organization is as follows. Section 7.1 introduces the plant, the control objectives and the two hierarchical control loops. Section 7.2 shows the odd harmonic controller designed for constant network frequency, also analysing the performance degradation through the THD, PF and cosφ. Section 7.3 details the results for the varying sampling time repetitive controller including the stability analysis by means of robust control theory. It is worth to say that the stability analysis using the LMI approach introduced in Section 3.3 can not be applied in this implementation since the size of the resulting matrices makes the problem computationally unsolvable. Section 7.4 and Section 7.5 present the implementation of the adaptive pre-compensation scheme and the robust design respectively and, finally, a second order HORC is applied in Section 7.6.

关键词：控制器；并联有源；电力滤波器

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报告从行业事件分析、市场环境、政策环境、分类环境、区域环境、国内对手情报、国外对手动向以及相关行业数据方面对汽车行业进行了分析评论。

关键词：汽车；战略性分析；竞争环境；竞争对手；行业数据

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A novel double-loop control approach for reducing excess torque of the servo loading system based on disturbance observer is proposed.The mathematical model of the loading system is established by mechanism theory and the reasons causing the excess torque are analyzed,the nominal model and disturbance weighting function are determined based on an approximate method.Disturbance observer based the inner loop controller is designed by H∞ mixed sensitivity method and the external-loop controller is designed as the classical PID controller.Both the simulation and experiments results show that disturbance observer is feasible and effective to eliminate the excess torque,accuracy of the loading system is improved.

关键词：控制器；干扰观测器；电动伺服加载系统

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In this paper, the methodology for the design of fuzzy controllers for softcore processors, such as the Xilinx Microblaze embedded in the VIRTEX5 FPGA, is proposed to regulate the angular position of the axes of an experimental platform. The platform uses servomotors to control the rotational movements of the X-Y-Z axes, this with respect to the earth horizon. The angular position is feedback using three inclinometers sensors based on MEMS technology with SPI interface. The desired position is regulated using three independent fuzzy PD+I controllers, which use the error and change of error as input signals. The proposed methodology consists in the design and evaluation of the fuzzy controllers using the Fuzzy Logic Toolbox of Matlab.

关键词：控制器；FPGA；软核；模糊逻辑控制器

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A brushless DC (BLDC) motor achieves higher energy efficiency and endures less wear and tear than a traditional brushed DC motor due to the lack of friction between current coils and motor brushes; it requires additional control logic, however, often implemented using a microcontroller, to perform motor commutation. Standard drive circuitry consists of a rail voltage applied to a three-phase inverter and a pulse width modulated (PWM) signal applied to MOSFET gates in accordance with the commutation pattern. Typically, motor speed control is achieved by varying the pulse width applied to the gates while maintaining a fixed rail voltage. We implemented a proportional-integral (PI) feedback system to control motor speed while varying rail voltage. Using this PI controller, we examined the relationship between steady-state power consumption and rail voltage for a fixed reference, as well as the effect of variable rail voltage on transient controller response and total transient power consumption.

关键词：控制器；无刷直流电机；可变电压轨

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The thesis mainly proposed a novel design method for Sinusoidal Pulse Width Modulation (SPWM) controller based on modulation waveform cycle normalization.T is the period ofsinusoidal modulation waveform,and T/n is the cycle of triangular carrier.Shift registers and adders of SPWM controller were designed to translate the 2n numerical value for SPWM waveform on-off switching points,which were calculated offline,to control the level of the outpout SPWM waveform,which is the key point of modulation waveform cycle normalization.In the thesis RTL function simulation verification by ModelSim and testing for FPGA have been achieved successfully.The results show that the novel SPWM controller is reliable,which has practical significance.

关键词：控制器；调制波形周期；归一化；SPWM控制器

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Adaptive control is considered for highly uncertain, and potentially unpredictable, flight dynamics characteristic of adverse conditions. This experiment looked at how adaptive controller adaptation time to recover nominal aircraft dynamics affects pilots and how pilots want information about available control authority transmitted. Results indicate that an adaptive controller that takes three seconds to adapt helped pilots when looking at lateral and longitudinal errors. The controllability ratings improved with the adaptive controller, again the most for the three seconds adaptation time while workload decreased with the adaptive controller. The effects of the displays showing the percentage amount of available safe flight envelope used in the maneuver were dominated by the adaptation time. With the displays, the altitude error increased, controllability slightly decreased, and mental demand increased. Therefore, the displays did require some of the subjects resources but these negatives may be outweighed by pilots having more situation awareness of their aircraft.

关键词：控制器；自适应控制器；试用时间；可用控制权；驾驶

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In our preceding works, the stage jerk feedback (SJFB) and base plate jerk feedback (BPJFB) schemes were successfully applied in a pneumatically actuated positioning stage. Where the relative position-based PDD~2 controller was used as the outer loop controller to maintain the positioning stability. However, since two accelerometers are used, each on the stage for SJFB and on the base plate for the BPJFB scheme, there is a possibility of modifying the stiffness and damping loops of PDD~2 controller from relative position-based to the relative acceleration-based inputs. Although there is no any advantage from the industrial application point of view, the bitterness of the modified PDD~2 controller is its simple structure while simple control scheme is desired. Therefore, this paper proposes the modification of stiffness and damping loops of PDD~2 controller such that to be energized by the relative acceleration signal. The objective is to check the feasibility of the proposed PDD~2 controller for the positioning performance without and with both SJFB and BPJFB schemes. It will help us in the future to think about calculating the stage acceleration signal through the relative position and base plate acceleration signals. So that there will be no need to use stage accelerometer, which results in the cost-effectiveness of the control system and safety of the setup. The experimental results show almost the same performances for the proposed PDD~2 controller as achieved through the conventional one.

关键词：控制器；气动定位；PDD ~ 2控制器；刚度；阻尼环

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In this paper, we present a controller design strategy for the implementation of a multicontroller structure for single-input single-output (SISO) plants. The overall control system can be viewed as a feedback interconnection of a SISO plant, a set of candidate controllers and a switched selection scheme that supervises the switching process among the candidate controllers. The switching scheme is designed without explicit assumptions on the plant model, based on the unfalsified control concept. A switched multicontroller structure is implemented and experimental results are presented.

关键词：控制器；非参数模型；复合；开关

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The Ride Motion Simulator (RMS), located at the U.S. Army Tank Automotive Research, Development and Engineering Center's (TARDEC) Ground Vehicle Simulation Laboratory (GVSL) in Warren, Michigan, is a high-performance, six degree-of-freedom (DOF), single occupant motion base designed to recreate the 'ride' of nearly any ground vehicle with high precision and accuracy. The simulator has two vehicle cabs that are essentially space frames that allow for a variety of vehicle configurations. The simulator was specifically designed for crew station and human-in-the-loop experiments. The RMS has a much higher bandwidth than most traditional driving simulators enabling it to recreate the high-frequency vibration often found in military vehicles traversing rough, cross-country terrains. The RMS was previously safety certified by both the U.S. Army Tank-automotive and Armaments Command (TACOM) and U.S. Army Developmental Test Command Safety Offices and was originally man-rated for operator-in-the-loop experiments. The writing of this report marks the replacement of the simulator's electronic controller with a custom Moog Test Controller. This report documents the analysis of the new motion controller for the RMS designed, built and installed for TARDEC by Moog, Inc. (East Aurora, NY). It provides system and component descriptions and a specific hazard analysis of the entire system. While this effort only replaces the electronic controls of the simulator, all simulator system and component descriptions are presented here for completeness. The scope of this analysis is the systematic assessment of the real and potential hazards associated with the RMS. This report is an attempt to identify hazards and to discuss the elimination or control of the identified hazards.

关键词：控制器；骑行；运动模拟器；安全评价

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