control of a spatiotemporal field with mobile agents has received considerable recent interest. A key problem in this area is the tendency of agents to become static once a local control objective is met. To overcome ...
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A globally recognised need is felt since entering the 21 st century for approaches to deal with environmental concerns such as global warming and energy issues arising from the emission of different types of fuels and...
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ISBN:
(纸本)9814291269
A globally recognised need is felt since entering the 21 st century for approaches to deal with environmental concerns such as global warming and energy issues arising from the emission of different types of fuels and consequential heat transfer. As a countermeasure, next-generation vehicles for a recycling-based society have to be energy-efficient, compact, light, low-cost and reliable. This work carries out energy analysis for a novel design of a two-wheeled vehicle with an intermediate body (IB). The IB of the vehicle is composed of two co-axial parts connected by a linear actuator and with a payload attached to the end of the upper part. The linear actuator allows the payload to move up and down along the ill of the vehicle. Based on Lagrangian dynamics, the system equations of motion are derived and an energy based control approach is developed.
Ray tracing on parallel hardware has recently benefit from significant advances in the graphics hardware and associated software tools. Despite this, the SIMD nature of graphics card architectures is only able to perf...
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Digital image processing is shifting the information analysis paradigms in a variety of systems whereas that it is becoming highly viable. Medicine has made the most of image processing by enhancing decision-making th...
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Wind energy, which is a kind of green energy, has become increasingly attracted people’s attention. Due to the characteristics of randomness and uncertainty of wind energy, in order to improve the efficiency of wind ...
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The basic evolutionary programming (BEP) method utilizes individual parent fitness to generate offspring. This is objectionable in many optimization problems, where the fitness value grows rapidly with problem dimensi...
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Previous stability analysis of the Particle Swarm Optimizer (PSO) were based on the assumption that all parameters are non-random, in effect a deterministic particle swarm optimizer. In this paper, we analyze the stab...
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Previous stability analysis of the Particle Swarm Optimizer (PSO) were based on the assumption that all parameters are non-random, in effect a deterministic particle swarm optimizer. In this paper, we analyze the stability of the particle dynamics without this restrictive assumption using Lyapunov stability analysis and the concept of passive systems for the continuous time version of the particle Swarm optimizer. Sufficient conditions for stability are derived and an illustrative example given.
The benefits of nonlinear damping in increasing the amount of energy (power) harvested by a vibration-based energy harvester (VEH) has been reported where it was revealed that more energy can be harvested using nonlin...
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This paper presents an application of a model checking framework to robotic search, particularly search problems known as pursuit-evasion that assume a smart, fast and evading target. Within the framework we can model...
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This paper presents an investigation into the development of an augmented control scheme for vibration suppression and rigid body motion control of a twin rotor multiinput multi-output system (TRMS) in hovering mode. ...
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ISBN:
(纸本)9812835768
This paper presents an investigation into the development of an augmented control scheme for vibration suppression and rigid body motion control of a twin rotor multiinput multi-output system (TRMS) in hovering mode. The augmented control scheme comprises feedforward and feedback control methods. A 4-impulse input shaper is designed and employed as a feedforward control method to pre-process the command signal applied to the system, based on the identified modes of vibration. It is then combined a hybrid feedback controller to form an augmented control scheme referred to as hybrid PD-type FLC and PID with 4-impulse input shaper (FPDPID+IS). The developed control strategy is designed and implemented within the simulation environment of the TRMS rig. Results of the response of the TRMS with the developed controller are presented in time and frequency domains. The performance of the proposed control scheme is assessed in terms of input tracking and level of vibration reduction. This is accomplished by comparing the system response with the developed controller to the one without control action in both open and closed loop configurations.
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