In this paper, a hybrid control is proposed for autonomous navigation of a mobile robot in an unknown space with static and dynamic obstacles. This hybrid control is composed by the commutation between an avoidance co...
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ISBN:
(纸本)9781665400299
In this paper, a hybrid control is proposed for autonomous navigation of a mobile robot in an unknown space with static and dynamic obstacles. This hybrid control is composed by the commutation between an avoidance control based on Hindmarsh-Rose (HR) neurons, which are interconnected by a diffusive coupling, and a posture tracking control. The commutation is in terms of the distance sensors that are incorporated on the frontal hemisphere of the mobile robot. The mobile robot control is implemented at wheel speeds level. A small coupling force is used to take advantage of the desynchronization on the membrane potentials when different inputs (external currents) are applied to each neuron. In this way, a greater sensitivity to any detection is obtained and a strategy of lateral avoidance is generated. On the other hand, a dynamic coupling is used to establish a strategy of frontal avoidance. Additionally, the performance of the proposed controller is numerically illustrated by means of computer simulations.
This work studies the parameter identification of a hybrid model with Particle Swarm Optimization. A hybrid model is based on selection functions that allow the switching between simple mathematical expressions in ord...
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ISBN:
(纸本)9781665400299
This work studies the parameter identification of a hybrid model with Particle Swarm Optimization. A hybrid model is based on selection functions that allow the switching between simple mathematical expressions in order to describe a complex behavior. In this work two performance functions are proposed to perform the identification: The former considers a switching between functions on their structure. The latter implements function penalty functions in order to avoid the evaluation of the selection functions. These functions test for the parameter identification of a Shape Memory Alloy model under a numerical simulation. The quality of the computed estimates is tested using statistical tools to assure repeatability and to verify the influence of the performance functions.
This paper deals with the development of a strategy to stabilize a Planar Vertical TakeOff and Landing Aerial Vehicle powered by a tether system. The tether system consists of a ground station which provides power thr...
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ISBN:
(纸本)9781665400299
This paper deals with the development of a strategy to stabilize a Planar Vertical TakeOff and Landing Aerial Vehicle powered by a tether system. The tether system consists of a ground station which provides power through a suspended cable to the aerial vehicle. Giving a position reference, the ground station computes the optimal cable length reference, which minimizes the tension force acting on the vehicle due to the cable weight. The optimal cable length is commanded by an automatic winch that retracts/releases the cable forming a catenary curve shape between the ground station and the aerial vehicle. This automatic procedure allows to reduce the disturbances in the vehicle since over-tensions in the cable are avoided. We used a state feedback controller with a tension compensator to control the vehicle altitude as well as its horizontal position, while the vehicle attitude and the winch dynamics are controlled by local state feedback controllers. Finally, in order to demonstrate the effectiveness of the proposed strategy we conducted simulation tests.
With the rapid development of modern science, digital twin technology based on a new generation of information technology, with the help of artificial intelligence and big data computing, has been widely used in profe...
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Railway transportation is a vital mode of transit in India, with almost 80% of all transportation carried out by railways. However, to ensure safe and secure train operations, regular maintenance and inspection of rai...
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To enhance the control accuracy of strip thickness in the non-stationary process of cold continuous rolling, a PSO-GA-RBF based prediction model for the non-stationary roll gap is proposed. This model combines big dat...
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This paper focuses on bridge inspections performed by intelligent unmanned aerial vehicles (UAV). For this, small data loggers are placed by the UAVs at the bridge, which have to be removed later. In our previous work...
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In this paper are solved problems concerning the control of ostensible positive linear systems. The desired control goal is achieved by designing a composed system matrix representation, where the constructive procedu...
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ISBN:
(纸本)9783031100475;9783031100468
In this paper are solved problems concerning the control of ostensible positive linear systems. The desired control goal is achieved by designing a composed system matrix representation, where the constructive procedure is given to its formation. The method is flexible and allows to obtain the state control with the gain matrix being strictly positive. The design is computationally simple, since it reduces to the solution of a feasibility LMI problem. Numerical simulation is presented to illustrate the validity of the proposed method.
This paper depicts the difference among using PI, PID and DOB (disturbance observer) controllers utilized in synchronization of two DC motors. It is observed that the DOB controller provides significantly faster respo...
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Vehicle accidents have a significant impact on society, and they have a number of detrimental repercussions on individuals, families, and communities. Vehicles are an essential part of everyone’s daily lives in the m...
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