Haar39;s Lemma (1918) provides the algebraic characterization of the inclusion of polyhedral sets. This Lemma has been involved many times in automatic control of linear dynamical systems when the constraint domains...
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ISBN:
(纸本)9728865619
Haar's Lemma (1918) provides the algebraic characterization of the inclusion of polyhedral sets. This Lemma has been involved many times in automatic control of linear dynamical systems when the constraint domains (state and/or control) are polyhedrons. More recently, this Lemma has been used to characterize stochastic comparison w.r.t linear orderings of Markov chains with different state spaces. Stochastic comparison is involved in the simplification of complex stochastic systems in order to control the approximation error made. In this paper we study the positive invariance of a max-plus ellipsoid by a max-plus linear dynamical system. We remark that to derive sufficient condition for the positive invariance. As an application we propose a method to compute a static state feedback control.
This paper, we propose a new design of linear descriptor discrete time mechanical system control law by using model following control system (MFCS). In previous studies, a method of MFCS was proposed by S. Okubo [11[2...
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ISBN:
(纸本)9781424451944
This paper, we propose a new design of linear descriptor discrete time mechanical system control law by using model following control system (MFCS). In previous studies, a method of MFCS was proposed by S. Okubo [11[2]. In this paper, the method of MFCS will be extended to discrete time descriptor mechanical system. The bounded property of internal states for control system is given and utility of this control design is guaranteed. In this case, a new criterion is proposed to ensure that internal states are stable.
This paper introduces a model-based approach for diagnosing actuator faults in an underwater remote operated vehicle (ROV). The method employs structural analysis techniques to perform diagnosability analysis and to g...
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ISBN:
(纸本)9798331518509;9798331518493
This paper introduces a model-based approach for diagnosing actuator faults in an underwater remote operated vehicle (ROV). The method employs structural analysis techniques to perform diagnosability analysis and to generate residuals, aiming to detect actuator faults at an early stage and issue timely warnings. To achieve this objective, we construct the mathematical model of the underwater robot, which facilitates the development of the system's structural model. This approach yields parity equations that serve as residual generators. A key advantage of the proposed method is its ability to provide practical solutions for residual generation in nonlinear systems. The CUSUM algorithm is used to detect changes in residual signals. The underwater remote operated vehicle BlueROV2 serves as the robotic platform for experimentation.
A person usually does not consider the car sitting in their driveway to be on the leading edge of new technology. However, for most people, the personal automobile has now become their initial exposure to new intellig...
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ISBN:
(纸本)9728865600
A person usually does not consider the car sitting in their driveway to be on the leading edge of new technology. However, for most people, the personal automobile has now become their initial exposure to new intelligent computational technologies such as fuzzy logic, neural networks, adaptive computing, voice recognition and others. In this paper we will discuss the various intelligent vehicle systems that are now being deployed into motor vehicles. These intelligent system applications impact every facet of the driver experience and improve both vehicle safety and performance. We will also describe recent developments in autonomous vehicle design and demonstrate that this type of technology is not that far away from deployment. Other applications of intelligent system design apply to adapting the vehicle to the driver's preferences and helping the driver stay aware. The automobile industry is very competitive and there are many other new advances in vehicle technology that cannot be discussed yet. However, this paper provides an introduction into those technologies that have already been announced or deployed and shows how the automobile has evolved from a basic transportation device into an advanced vehicle with a host of on-board computational technologies.
It39;s very rational to have menu control and display function for oscilloscope to provide various functionality and make it user friendly. A responsive and well-structured menu design can make the system convenient...
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A radically new approach will be described for the fully distributed and dynamic management of advanced crisis relief operations and missions. It is based on the installation of a universal "social" module i...
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ISBN:
(纸本)9728865597
A radically new approach will be described for the fully distributed and dynamic management of advanced crisis relief operations and missions. It is based on the installation of a universal "social" module in many existing and massively used data processing and control devices, including (but not limited to) internet hosts, laptops, mobile robots and mobile phones. These modules can collectively interpret a special scenario language while exchanging higher-level program code with accompanying data and control in parallel. This can dynamically integrate any scattered post-disaster human and technical resources into an operable distributed system which, from one side, is effectively supervised externally, and from the other side, is capable of solving complex self-analysis, coordination, survivability, relief, and reconstruction problems autonomously.
The closer the interaction between humans and robots gets, the more the question of safety and intrinsic compliance arises. Especially in robotic systems that come into contact with humans, pneumatic muscle actuators ...
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ISBN:
(纸本)9781509060887
The closer the interaction between humans and robots gets, the more the question of safety and intrinsic compliance arises. Especially in robotic systems that come into contact with humans, pneumatic muscle actuators are increasingly of interest. Many position control approaches for joints driven by pneumatic muscle actuators have been developed and implemented, but only a few for assistive robots. For these robots, like exoskeletons or rehabilitation robots, a torque controller is mostly required. In this paper, a general discussion of a torque controller for joints driven by pneumatic muscle actuators will be given. Subsequently a so called "sensorless" approach of a torque controller will be implemented and tested. It will be shown that the torque can be controlled without using a force-torque sensor, by substituting the force-torque sensors, with a combination of pressure as well as length measurements and the static force characteristic of pneumatic muscle actuators. Furthermore, it can be seen that a non-model-based, hand-tuned proportional or proportional-integral controller can follow a given torque trajectory up to 1Hz, while using the "sensor-less" approach.
Compared with traditional robot laboratory, virtual robot laboratory integrates programming, modeling and controlling, which can assist related learning of robot courses more efficiently and directly under the conditi...
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Compared with traditional robot laboratory, virtual robot laboratory integrates programming, modeling and controlling, which can assist related learning of robot courses more efficiently and directly under the condition of saving time and equipment cost. A concept of virtual robotics laboratory based on virtual robot platform V-REP is proposed in this paper. The laboratory is divided into coordinate transformation, positive and inverse kinematics, dynamics and trajectory planning. At the same time, virtual teaching tasks of comprehensive course design for robotics is also proposed to improve students' capacity for designing virtual robots comprehensively and improve teaching quality.
During the spacecraft assembly, the assembling information of the equipment is mainly determined by viewing the 3D model and manually measuring the lines. The assembly method is with high workload and low efficiency. ...
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ISBN:
(纸本)9781538695944
During the spacecraft assembly, the assembling information of the equipment is mainly determined by viewing the 3D model and manually measuring the lines. The assembly method is with high workload and low efficiency. To solve the problem that the 3D model cannot effectively guide the assembly, the approach to use the combination of laser projection technology and 3D model can make the assembly information on the 3D model projected to the assembly surface quickly and accurately, thus to obtain assembly information intuitively. This way can improve the efficiency and level of spacecraft assembly.
Greatest difficulties arise in 3D environments when we have to deal with a scene with dissimilar objects without pose restrictions and where contacts and occlusions are allowed. This work tackles the problem of corres...
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ISBN:
(纸本)9728865600
Greatest difficulties arise in 3D environments when we have to deal with a scene with dissimilar objects without pose restrictions and where contacts and occlusions are allowed. This work tackles the problem of correspondence and alignment of surfaces in such a kind of scenes. The method presented in this paper is based on a new representation model called Depth Gradient Image Based on Silhouette (DGI-BS) which synthesizes object surface information (through depth) and object shape information (through contour). Recognition and pose problems are efficiently solved for all objects of the scene by using a simple matching algorithm in the DGI-BS space. As a result of this the scene can be virtually reconstructed. This work is part of a robot intelligent manipulation project. The method has been successfully tested in real experimentation environments using range sensors.
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