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To better integrate the wind power generation system into the AC micro-grid, power quality of the micro-grid has to be monitored. In this paper, the micro-grid power quality transient disturbance detection algorithm, which based on the neural network adaptive control (NNAC), was proposed. Besides, adaptive control structure of power quality transient disturbance detection was given, and transient...
This article mainly focuses on individual pitch control of floating offshore wind turbines. Regarding to the power and movement control of offshore wind turbines, we apply experts PID control to the design of controller. In order to verify the feasibility of controller, simulation experiments have been run on FAST. The result shows individual pitch control technique can effectively reduce pitching...
Design and develop a gearbox remote fault diagnosis expert system based on nets considering current situation of operation and maintenance of the gearbox. Suggest a new fuzzy Petri nets parallel deduction algorithm to solve the fuzzy and parallelism of the gearbox fault and the indeterminacy, insufficiency information in the diagnosis process. The simulation and example indicate that this method is...
It has great significance for reducing the operation failure rate and operation maintenance cost of wind turbine through monitoring possible fault power electronic devices and identifying the faults of power electronic devices. The paper applies self-organizing feature map neural network (SOM) to the fault diagnosis of wind turbine power electronic equipment and verifies its engineering application...
Rehabilitation robot is a type of assistant recovery equipment designed particularly for the sick people having difficulty in walking to get gait rehabilitation training, the research on joint flexibility is of great significance for the program making of walking gait control. The three closed-loops PID control method was proposed for the lower-limb rehabilitation robot MACCEPA (mechanically adjustable...
Lower limbs rehabilitation robot combines kinesitherapy with psychotherapy organically and provides a effective medical appliance to recover limb function for the patients. The rehabilitation robot designed in this paper uses advanced omnidirectional wheel structure chassis that can move toward all directions without rotation, its motion range do not have dead angle and the using demand are also decreased...
The paper proposes an obstacle-avoidance control algorithm based on the fuzzy matching of obstacle environment. The algorithm is mainly used in the obstacle-avoidance control of omni directional lower limbs rehabilitation robot. The method generates the eigen value of obstacle environment using detected angle information of obstacle boundary, and fuzzy matches with the known environment information...
In this paper we describe the design and evaluation of a passive lower limb assistive exoskeleton based on omnidirectional rehabilitation vehicle. According to the leg dynamics during assisted walking, we optimize the design parameters to make the lower limb obtain the most positive energy. We employ MACCEPA (mechanically adjustable compliance and controllable equilibrium position actuator) in design...
This paper presents a fuzzy controller design for a drive system of lower limbs rehabilitative robot. In this system, turning the design of the fuzzy controller into an optimization of the parameters, using genetic algorithm to make an optimizing design of the fuzzy controller could get rid of the reliance on the experience knowledge and the cut and try method in the design of the fuzzy controller...
This paper analyzes the machinery and motion control system of the mobile lower limbs rehabilitative robot. This paper presents a robust control design for a drive system of lower limbs rehabilitative robot. An adaptive decoupling controller is designed to drive the wheels speed to extract accurate speed of the robot and to allow omni-directional regulation. This system controls the DC motor by embedded...
This paper analyzes the human motion analysis system for lower limbs rehabilitative robot. In this paper, we focus on the design of motion analysis system for gait analysis during human's walking. The system was designed as a different sensors combination consisting of two gyroscope-chips that measure two-direction rotational velocities of the foot and a two-axis accelerometer-chip that can output...
The design and implementation of an omnidirectional lower limbs rehabilitative training robot are described. The robot is designed to improve patient's locomotion, who suffers from impairment in walking ability after neurology injuries. The robot is characterized with three key points as following: 1) a wheeled mechanical structure, 2) gait phase analysis system using wearable press sensors and 3)...
This paper presents a robust control design for a variable-speed adjustable-pitch wind turbine system. An adaptive decoupling controller is designed to drive the turbine speed to extract invariable power from the wind and to allow pitch adjustment to power regulation. An adaptive decoupling controller is designed to drive the turbine speed to extract maximum power from the wind and to allow pith adjustment...
Active control of a horizontal axis wind turbine via pitching of the rotor blades is considered in this paper. It presents a robust control design for a variable-speed adjustable-pitch wind energy conversion system with an uncertain model. A Hinfin controller is designed to drive the turbine speed to extract invariable power from the wind and to allow pitch adjustment to power regulation. It is the...
Active control of a horizontal axis wind turbine via pitching of the rotor blades is considered in this paper. It presents a robust control design for a variable-speed adjustable-pitch wind energy conversion system with an uncertain model. A Hinfin controller is designed to drive the turbine speed to extract invariable power from the wind and to allow pitch adjustment to power regulation. It is the...
This paper presents a robust control design for a variable-speed adjustable-pitch wind turbine system. An adaptive decoupling controller is designed to drive the turbine speed to extract invariable power from the wind and to allow pitch adjustment to power regulation. An adaptive decoupling controller is designed to drive the turbine speed to extract maximum power from the wind and to allow pith adjustment...
This paper presents a robust control design for a variable-speed adjustable-pitch wind energy conversion system. An adaptive controller is designed to drive the turbine speed to extract invariable power from the wind and to allow pitch adjustment to power regulation. An adaptive controller is designed to drive the turbine speed to extract maximum power from the wind and to allow pitch adjustment to...
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