A kind of attitude control strategy for the quadrotor based on active disturbance rejection control(ADRC) is proposed in this ***,the dynamic model using Newton–Euler formula of the quadrotor helicopter is *** accord...
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A kind of attitude control strategy for the quadrotor based on active disturbance rejection control(ADRC) is proposed in this ***,the dynamic model using Newton–Euler formula of the quadrotor helicopter is *** according to the order of dynamics equations design corresponding ***,in consideration of the characteristics of uncertain parameter of ADRC,the Glowworm Swarm Optimization(GSO) is designed to optimize the controller parameters so as to enhance the system ***,the comparative simulation for attitude of quadrotor is developed to verify the effectiveness of the proposed control *** results of simulations show that the proposed controller possesses strong robustness and high performances.
In order to solve the trajectory tracking control problem of photovoltaic cleaning robots, a universal crawler robot motion model was *** at the kinematics of the track-cleaning photovoltaic robot, a trajectory tracki...
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In order to solve the trajectory tracking control problem of photovoltaic cleaning robots, a universal crawler robot motion model was *** at the kinematics of the track-cleaning photovoltaic robot, a trajectory tracking error model of the tracked mobile robot is given and the error transformation equation is *** tracking robot control problem of the target robot is transformed into the stabilization problem of the error system. The Lyapunov theory and the Barbalat lemma are used to prove the existence of the global asymptotic tracking control *** global asymptotic tracking of track-cleaning photovoltaic cleaning robots is achieved by using appropriate control *** results show that the control law adopted is stable and effective.
Current Wireless Capsule Endoscopic systems (WCE) provide only diagnostic tools, but in the future, advanced functionalities such as controllable drug delivery could be available for clinicians. This paper proposes a ...
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Genetic algorithms (GA) and ant colony algorithm (ACO) are computational models that simulate the process of biological evolution and are widely applied to problems related to path planning. This paper proposes a path...
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The electric vehicle has brought fluctuation to the power system. The wide use of electric vehicles(EVs) has exacerbated this challenge. Firstly, the mathematical model of electric vehicles under random charging mode ...
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The electric vehicle has brought fluctuation to the power system. The wide use of electric vehicles(EVs) has exacerbated this challenge. Firstly, the mathematical model of electric vehicles under random charging mode is given. Secondly, the power electronics charger topology is introduced. This paper analyzed the changes of the power system reliability when the proportion of electric vehicles increased, which shows the increase of electric vehicles under random charging mode poses a great threat to the reliability.
As Plug-in hybrid electric vehicles (PHEVs), dips usually occur on the bus because multiple PHEVs are connected to the same bus simultaneously. In view of the flaws of the existing traditional compensators and their e...
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As Plug-in hybrid electric vehicles (PHEVs), dips usually occur on the bus because multiple PHEVs are connected to the same bus simultaneously. In view of the flaws of the existing traditional compensators and their extra cost, the grid -side reactive power compensation by the chargers of PHEVs during charging is expected to address this issue. To provide such compensation during charging, it is necessary that PHEVs incorporate bidirectional chargers. Among different types of bidirectional chargers, the DC voltage controller is unable to compensate voltage. Alternatively, the chargers with active power controllers regulate active power as well as reactive power independently, which is effective and convenient. In this paper, we propose a PR control strategy for the PHEV s chargers to tune reactive power online and to increase power factor. The simulation examples are given to verify the effectiveness of the proposed strategy.
In order to help stroke patients to go on rehabilitation training, a new type of exoskeleton upper limb rehabilitation robot based on biomechanics has been designed in this paper, and speech control has been implement...
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Complied with relevant standards, a novel on-line testing system for flow characteristics of electronic fuel injector was proposed in this paper. The designed structure of the system was described in details, as well ...
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Complied with relevant standards, a novel on-line testing system for flow characteristics of electronic fuel injector was proposed in this paper. The designed structure of the system was described in details, as well as the composition and principle of the control unit. The testing process on the dynamic flow and the static flow of the port fuel injectors driven by voltage was implemented. According to the experimental results, the error of the on-line system is less than 4%, which can meet the requirements on flow characteristics test of fuel injectors. At the same time, the on-line system has practical application values.
Current Wireless Capsule Endoscopic systems (WCE) provide only diagnostic tools, but in the future, advanced functionalities such as controllable drug delivery could be available for clinicians. This paper proposes a ...
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Current Wireless Capsule Endoscopic systems (WCE) provide only diagnostic tools, but in the future, advanced functionalities such as controllable drug delivery could be available for clinicians. This paper proposes a spiral capsule robot driven by external magnetic field control wireless targeted drug delivery module, the module includes two radial magnetizing magnetic ring and a simple plastic chain, and it has a volume of 1.15 ml medicine cavity integration within the interior space. The controlsystem of the robot including the driven system, motion control and drug release of the robots was presented. The robot module has two spiral grooves outside the module, which can be controlled in the external magnetic field. The inner two ring magnets can be operated and closed under the control of external strong pulse magnetic field. Then the robot was driven by a three-axis Helmholtz coil system. Finally, the feasibility of the function of drug release is verified. The developed capsule robot can be used to improve the capsule robot system, increase the function of the capsule robot, and can be used in the future medical treatment.
As Plug-in hybrid electric vehicles(PHEVs), dips usually occur on the bus because multiple PHEVs are connected to the same bus simultaneously. In view of the flaws of the existing traditional compensators and their ex...
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As Plug-in hybrid electric vehicles(PHEVs), dips usually occur on the bus because multiple PHEVs are connected to the same bus simultaneously. In view of the flaws of the existing traditional compensators and their extra cost, the grid-side reactive power compensation by the chargers of PHEVs during charging is expected to address this issue. To provide such compensation during charging, it is necessary that PHEVs incorporate bidirectional chargers. Among different types of bidirectional chargers, the DC voltage controller is unable to compensate voltage. Alternatively, the chargers with active power controllers regulate active power as well as reactive power independently, which is effective and convenient. In this paper, we propose a PR control strategy for the PHEVs chargers to tune reactive power online and to increase power factor. The simulation examples are given to verify the effectiveness of the proposed strategy.
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