In this paper we have shown how to simplify an algorithm for the two stage design of linear feedback controllers by reducing computational requirements. the algorithm is further simplified for linear discrete-time sys...
详细信息
ISBN:
(纸本)9780791846209
In this paper we have shown how to simplify an algorithm for the two stage design of linear feedback controllers by reducing computational requirements. the algorithm is further simplified for linear discrete-time systems with slow and fast modes (multi-time scale systems or singularly perturbed systems) providing independent and accurate designs in slow and fast time scales. the simplified design procedure and its very high accuracy are demonstrated on the eigenvalue assignment problem of a steam power system.
this paper presents the design and simulation of an indirect adaptive robust controller (IARC) for the rotatory drilling motion used in oil and gas exploration operations. To eliminate drill string vibrations, such as...
详细信息
ISBN:
(纸本)9780791846186
this paper presents the design and simulation of an indirect adaptive robust controller (IARC) for the rotatory drilling motion used in oil and gas exploration operations. To eliminate drill string vibrations, such as stick-slip, and achieve better control of drill bit rotating motion, an IARC controller was designed to compensate nonlinear friction torque directly and address system uncertainties during drilling. Simulation results are presented to illustrate the effectiveness of the designed IARC controller.
Electrospinning produces submicron fibers for a variety of applications using a wide range of polymers. Achieving the desired fiber diameter, maximizing productivity, and minimizing variation are important production ...
详细信息
ISBN:
(纸本)9780791846186
Electrospinning produces submicron fibers for a variety of applications using a wide range of polymers. Achieving the desired fiber diameter, maximizing productivity, and minimizing variation are important production objectives. this paper addresses several important areas needed to develop a general electrospinning control approach including: developing a correlation between measurements, process conditions, and the resulting fiber diameter, developing a method to determine an operating regime that meets manufacturing objectives, and identifying process dynamics for controller design.
Around a benchmark open-loop unstable LTI plant with a single delay, we design controllers that create marginal stability of the closed loop at a pre-defined delay margin value (tau) over bar. these controllers theref...
详细信息
ISBN:
(纸本)9780791846209
Around a benchmark open-loop unstable LTI plant with a single delay, we design controllers that create marginal stability of the closed loop at a pre-defined delay margin value (tau) over bar. these controllers therefore guarantee system stability for all delays less than (tau) over bar. Case studies covering various scenarios are presented.
Piezoelectric fuel injection provides a high bandwidth response that can be utilized in a common rail system to control injection during rate shaping. A model-based control is necessary to compensate for the nonlinear...
详细信息
ISBN:
(纸本)9780791846209
Piezoelectric fuel injection provides a high bandwidth response that can be utilized in a common rail system to control injection during rate shaping. A model-based control is necessary to compensate for the nonlinearities, including the non-smoothness, in a piezoelectric fuel injector Since the injector has a high order a dynamic surface control was developed and simulated in MATLAB. In this paper a stability analysis of the dynamic surface control is performed and show the stability and the guarantee of tracking performance.
Certain heavy-lifting applications require the coordinated movement of multiple cranes. Such tasks dramatically increase the complexity of crane operation, especially when the payload has a non-uniform shape. this pap...
详细信息
ISBN:
(纸本)9780791846209
Certain heavy-lifting applications require the coordinated movement of multiple cranes. Such tasks dramatically increase the complexity of crane operation, especially when the payload has a non-uniform shape. this paper studies the dynamic behavior of a dual-hoist bridge crane moving triangular payloads. Simulations and experiments are used to develop an understanding of the dynamic response of the system. Various inputs and system configurations are analyzed, and important response characteristics are highlighted.
An adaptive sliding mode spacecraft attitude controller is derived in this paper. It has the advantage of not requiring knowledge of the inertia of the spacecraft, and rejecting unexpected external disturbances, with ...
详细信息
ISBN:
(纸本)9780791846193
An adaptive sliding mode spacecraft attitude controller is derived in this paper. It has the advantage of not requiring knowledge of the inertia of the spacecraft, and rejecting unexpected external disturbances, with global asymptotic position and velocity tracking. the sliding manifold is designed using optimal control analysis of the quaternion kinematics. the sliding mode control law and the parameter adaptation law are designed using Lyapunov stability. Numerical simulations are performed to demonstrate boththe nominal and the robust performance.
It is often very difficult for humans to control cranes due to their inherent oscillatory nature and sluggish response. Tasks are made even harder when the operator moves around the workspace and changes his/her orien...
详细信息
ISBN:
(纸本)9780791846209
It is often very difficult for humans to control cranes due to their inherent oscillatory nature and sluggish response. Tasks are made even harder when the operator moves around the workspace and changes his/her orientation. Traditionally, the driving axes on cranes have been independent of operator orientation and location. When the operators change the direction they are facing, their "Forward" direction is not consistent with "Forward" on the crane control interface. this paper describes two novel ways to reduce this problem and shows their effectiveness in a human operator study.
this paper develops three novel hybrid control techniques addressing fast energy equipartition for cyber-physical network systems, and discusses the future application of the proposed approaches to power network syste...
详细信息
ISBN:
(纸本)9780791846209
this paper develops three novel hybrid control techniques addressing fast energy equipartition for cyber-physical network systems, and discusses the future application of the proposed approaches to power network systems. the proposed hybrid distributed controller architectures are designed to mimick the dynamic behavior of thermodynamicsystems to achieve the robust performance of cyber-physical network systems. the proposed controller architectures are constructed in such a way that each controller has a one-directional energy transfer from a plant to itself and exchanges energy with its neighboring controllers. Energy-based resetting laws and power-based resetting laws are utilized in the hybrid controllers. then, the hybrid control techniques are applied to power network systems, and simulation studies are carried out to show the efficacy of the proposed approaches.
In this paper, we consider the problem of formation control of multi-agent systems where the desired formation is dynamic. this is motivated by applications, such as obstacle avoidance, where the formation size and/or...
详细信息
ISBN:
(纸本)9780791846186
In this paper, we consider the problem of formation control of multi-agent systems where the desired formation is dynamic. this is motivated by applications, such as obstacle avoidance, where the formation size and/or geometric shape needs to vary in time. Using a single-integrator model and rigid graph theory, we propose a new control law that exponentially stabilizes the origin of the nonlinear, inter-agent distance error dynamics and ensures tracking of the desired formation. the extension to the formation maneuvering problem is also discussed. Simulation results for a five-agent formation demonstrate the control in action.
.jpg?site=8fa65c6403e3f8b5b3923814eda18bd0)
暂无评论