Spacecraft attitude controlsystem simulator is a laboratory system designed for developing and testing attitude control algorithm in a low-risk, low-cost environment. In this paper, the design and development of the ...
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ISBN:
(纸本)9780769547923
Spacecraft attitude controlsystem simulator is a laboratory system designed for developing and testing attitude control algorithm in a low-risk, low-cost environment. In this paper, the design and development of the hardware-in-loop simulation of spacecraft attitude controlsystem is described, including hardware and software. The distinguished feature of the simulation system different from other simulators is that on-board data handling is based on wireless ad hoc network, which breaks through the traditional conception. Based on the established simulator, the paper presents some experimental results of spacecraft attitude control. The test results show that reliability and validity of the simulator, which provides a new way and a good support environment for the ground test of spacecrafts attitude control approaches.
This paper depicts the design of control law to stabilize nonlinear system with mixed match-mismatch uncertainties with bounded disturbance. The design approach exploit the advantages and flexibility of backstepping t...
This paper depicts the design of control law to stabilize nonlinear system with mixed match-mismatch uncertainties with bounded disturbance. The design approach exploit the advantages and flexibility of backstepping technique. To compensate for the uncertainties and bounded disturbance, nonlinear damping function is augmented to the pre-designed unperturbed stabilizing function. Throughout the design, Young's inequality and comparing squares method is used to avoid elimination of useful nonlinear terms as well as to obtain feasible control law.
In order to achieve the communication between heterogeneous processor of the computerized numerical control (CNC) system, two SoC communication methods were developed. They are based on static buffer system and dynami...
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This paper concerns the problem of online estimation of unknown disturbances of multi-input unknown chaotic systems and designs a disturbance rejection controller according to the estimation information. A model refer...
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ISBN:
(纸本)9781467329613
This paper concerns the problem of online estimation of unknown disturbances of multi-input unknown chaotic systems and designs a disturbance rejection controller according to the estimation information. A model reference adaptive control technique is used in which the controller is designed such that the states of the chaotic system follow the states of the prescribed reference model. Only the dimensions of the chaotic systems are required to be known. Based on Lyapunov's stability theory, adaptive control laws are synthesized. Illustrative example with numerical simulations is studied. The simulation results show that our control method works very well in chaos control.
In this paper, a multicore DSP processing system based on VME standard is designed. The design takes the multicore DSP TMS320C6472 as the primary processor. The DSPs on the same board interconnect via Serial RapidIO b...
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ISBN:
(纸本)9781467321969
In this paper, a multicore DSP processing system based on VME standard is designed. The design takes the multicore DSP TMS320C6472 as the primary processor. The DSPs on the same board interconnect via Serial RapidIO bus. The system takes VME bus as the control bus and LVDS bus as the data bus between boards. A large amount of tests and applications show that the system has advanced performance and high stability. The system can be more widely used.
Based on the situation that, currently, the solving of the problem of flight gathering conflict merely through turning one aircraft's heading, this paper intends to provide the methods of computing the optimal div...
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This paper deals with a general variational approach to optimal control design for a class of hybrid mechanical systems. We study a special structure of the optimal control problems (OCPs) in the classic mechanics and...
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CPS has broad spectrum of system features. A LCPS (Large-scale CPS) has a number of computing entities and physical systems including various sensors and actuators. The design and implementation of a LCPS must be more...
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ISBN:
(纸本)9780769546957
CPS has broad spectrum of system features. A LCPS (Large-scale CPS) has a number of computing entities and physical systems including various sensors and actuators. The design and implementation of a LCPS must be more difficult and different from those of stand-alone CPS because it has more heterogeneity, more unreliability, more complexity and more unpredictability. Therefore, a LCPS must be developed under the systematic method in order to make fault-free control software at design time. In addition, LCPS requires control middleware supporting different or orthogonal QoS (Quality of Service) requirements of the subsystems composing LCPS.
The work present a humanoid robot with flexible joints and study the passivity control to improve the tracking performance. First, we induce the passivity control function and verified it in Simulink, then divide it i...
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ISBN:
(纸本)9781467321273;9781467321259
The work present a humanoid robot with flexible joints and study the passivity control to improve the tracking performance. First, we induce the passivity control function and verified it in Simulink, then divide it into linear and non-linear part which execute in FPGA and DSP respectively. The linear part in FPGA is designed with hardware/software co-design method. Vector control is adopted to control the permanent magnet synchronous motor (PMSM) and programmed in Hardware Description Language (HDL) to make sure the motor be a torque generator. Experiments on a robotic manipulator are done and the results demonstrate the effectiveness and correctness of the proposed controller.
Wastewater treatment system is highly uncertain and intricate system. Suitable model is a key to smooth and optimal operation of the system. The available wastewater treatment system models are too difficult to use an...
Wastewater treatment system is highly uncertain and intricate system. Suitable model is a key to smooth and optimal operation of the system. The available wastewater treatment system models are too difficult to use and costly to experiment. This paper presents neuro-fuzzy modelling of wastewater treatment system. Adaptability, smoothness, effectiveness, reliability, less computational and empirical experimentation costs are some of the advantages of neuro-fuzzy approach. Simulation studies show that the proposed neuro-fuzzy technique yielded outstanding results. Thus, proven the technique is an efficient and valuable tool for modelling wastewater treatment system.
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