The gait movement mechanism of hexapod robot with 18-DOF (degree of freedom) is analyzed in this paper. Mainly focus on the robot walking process, it is analyzed that the kinematics characteristics, static stability, ...
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This paper deals with the position control problem of designing asymptotically stable proportional plus integral regulators with only position feedback for robot manipulators with uncertain and varying-time payload. P...
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ISBN:
(纸本)9780769538044
This paper deals with the position control problem of designing asymptotically stable proportional plus integral regulators with only position feedback for robot manipulators with uncertain and varying-time payload. Proposed is a set of output feedback N-PID regulators consisting of a linear combination of the proportional control mode, derivative control mode, nonlinear control mode shaped by a nonlinear function of position errors, linear integral control mode driven by derivative feedback, and nonlinear integral control mode driven by a nonlinear function of position errors, where the velocity feedback is replaced by a filtered position feedback. By using Lyapunov's direct method and LaSalle's invariance principle, the simple explicit conditions on the regulator gains to ensure global asymptotic stability are provided. The theoretical analysis and simulation results show that the output feedback N-PID control laws can be tuned to recover the performance of a state feedback control laws, that is, the output feedback control laws with the asymptotically stable integrators have the same fast convergence, good flexibility and strong robustness as the state feedback one, and then the same optimum response can be achieved by a set of control parameters in the whole control domain, even under the case that the payload is changed abruptly.
A recognizing and fixing by landmarks system based on the omni-directional vision image environment is designed in this paper. The principle of fish-eye lens image formation is analyzed and the general software module...
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ISBN:
(纸本)9781846260612
A recognizing and fixing by landmarks system based on the omni-directional vision image environment is designed in this paper. The principle of fish-eye lens image formation is analyzed and the general software module of this system is proposed. Based on FPGA and DSP hardware architecture developed the embedded control module, used the computer image processing algorithm to compile the processing software, realized the distortion correction of fish- eye lens image formation and the function of mobile robot recognizing and fixing by landmarks. The system can be applied to the localization and guidance of mobile robot based on landmarks under the indoor and outside semi-structured environment.
As space robots gain more and more importance in space operations, it was becoming imperative to understand their distinctive dynamics andcontrol characteristics. In the absence of external forces and moments, the li...
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ISBN:
(纸本)9781846260612
As space robots gain more and more importance in space operations, it was becoming imperative to understand their distinctive dynamics andcontrol characteristics. In the absence of external forces and moments, the linear and angular momentums of the robot were conserved, so the dynamics of flexible space robotic systems could be quite complex and their control could be difficult. The motion of flexible space robot manipulators was systematically studied in this paper. Also kinematic, dynamic were presented. The sensory feedback control and the hybrid position/force control were discussed in this paper. Examples of computer simulation of the dynamics of a space robot with three flexible links, used the hybrid position/force control approach, were considered. Simulations results show that the dynamic modeling andcontrol techniques of flexible space robot proposed in this paper are very useful.
The paper considers the design of software and hardware of automatic control system about wheeled transporting robot. The series of C8051F310 MCU is selected as CPU of control system and FAULHABER3257-024CR DC motor a...
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ISBN:
(纸本)9781846260650
The paper considers the design of software and hardware of automatic control system about wheeled transporting robot. The series of C8051F310 MCU is selected as CPU of control system and FAULHABER3257-024CR DC motor as driver for this two wheels system. Sensors of circling barrier is used to monitor obstruction, The control system realizes closed loop control taking advantage of C language, Appropriate measures of circling barrier is used. Information of reaching fixed location is feed back by colour sensors, so actions of grabing or putting down block and rotations of whirling arm, which are controled by motor with open loop, are accomplished correspondingly.
The linear model of flexible two-wheeled self-balancing robot that has been proved is used in the paper. The lumbar of robot is the spring. The discrete Hopfield neural network is used for controlling robot's post...
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ISBN:
(纸本)9783642108167
The linear model of flexible two-wheeled self-balancing robot that has been proved is used in the paper. The lumbar of robot is the spring. The discrete Hopfield neural network is used for controlling robot's posture based on association study. Study of biological control method to realize flexible robot posture control in the adaptive, self-organizing capacity, the reasonable energy function is defined for the non-linear and strong coupling robot, then design the Hopfield controller, used the dynamic function of flexible robot, which satisfied the need of robot's dynamic process. Analyze the convergence of the controller. Simulation experiments show the effectiveness of the method and proved the stability of system. Validity and rationality of the system controller designed are verified through the performance experiments of the prototype and analyzed the experiment result in detail. The robot like the human being not only structure, but also physiological intelligence.
Small size unmanned helicopter has found diverse applications for both civil and military missions. In order to develop a flight robot based on a small size unmanned remotely controlled helicopter, a flight control sy...
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ISBN:
(纸本)9780769536347
Small size unmanned helicopter has found diverse applications for both civil and military missions. In order to develop a flight robot based on a small size unmanned remotely controlled helicopter, a flight control system is presented in this paper. The hardware and software of the system are designed. The design goal is to have the helicopter achieve stable hover. As the kernel of the system, the flight control strategies are described which based on artificial neural network and human operator's skill. The processed flight data are used to train and validate a multilayer artificial neural network offline, and then the trained artificial neural network is reconstructed in the flight control system for control strategies.
The proceedings contain 240 papers. The topics discussed include: an algorithm to segment the ventless tire mold;model and tool integration for modern diesel engine management system development;a novel distributed ad...
ISBN:
(纸本)9781424446070
The proceedings contain 240 papers. The topics discussed include: an algorithm to segment the ventless tire mold;model and tool integration for modern diesel engine management system development;a novel distributed admission control mechanism in mobile ad hoc network;delay-range-dependent stability for static recurrent neural networks with time-varying delays;statistical feature representations for automatic wood defects recognition research and applications;study on legal affairs about e-insurance;a hybrid neural network and freight volumes application;the research of information management system for evaluating admitting new party member in college;a result of the wireless communication;chaos of a class of Hopfield neural networks;research and implementation of part-of-speech tagging based on hidden Markov model;intelligent referee system in robot-soccer games based on conditional event algebra;and context modeling and reasoning based on certainty factor.
The proceedings contain 240 papers. The topics discussed include: an algorithm to segment the ventless tire mold;model and tool integration for modern diesel engine management system development;a novel distributed ad...
ISBN:
(纸本)9781424446070
The proceedings contain 240 papers. The topics discussed include: an algorithm to segment the ventless tire mold;model and tool integration for modern diesel engine management system development;a novel distributed admission control mechanism in mobile ad hoc network;delay-range-dependent stability for static recurrent neural networks with time-varying delays;statistical feature representations for automatic wood defects recognition research and applications;study on legal affairs about e-insurance;a hybrid neural network and freight volumes application;the research of information management system for evaluating admitting new party member in college;a result of the wireless communication;chaos of a class of Hopfield neural networks;research and implementation of part-of-speech tagging based on hidden Markov model;intelligent referee system in robot-soccer games based on conditional event algebra;and context modeling and reasoning based on certainty factor.
A motion planning strategy, a dissymmetrical T-shaped peg into a C-shaped slot, is proposed based on medial axis diagram knowledge and force controltechnology. It is very important to understand the assembly environm...
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ISBN:
(纸本)9783642108167
A motion planning strategy, a dissymmetrical T-shaped peg into a C-shaped slot, is proposed based on medial axis diagram knowledge and force controltechnology. It is very important to understand the assembly environment in the process of the active assembly operation. The assembly environment can be understood based on the analysis of the geometrical and force conditions. The medial axis diagram is used to analyze the geometric constraint relations of the parts during the robot assembly, and by which, the whole process of the complex assembly operation can be planned. As a result, the robot can understand the almost environment information based on the planning knowledge. Due to the uncertainties in the assembly process, the force sensing and force control are executed for apperceiving the precise physical relations. Combining the medial axis diagram knowledge-based with force sensing and force control strategy, the assembly task of T-shaped peg into C-shaped slot can be completed high efficiently, and it can be used for references to the study of the robot assembly.
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