The principles and structure of a new economical pulse-type servo drive system were presented. One part is main control board for servo motor with incremental encoder, which receive pulse position command form upper c...
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ISBN:
(纸本)9781424451944
The principles and structure of a new economical pulse-type servo drive system were presented. One part is main control board for servo motor with incremental encoder, which receive pulse position command form upper controller. With the scholastic calculation in main control part of servo drive, and the dead time of PWM signals was compensated by hardware circuit, this drive system has a high performance in dynamic response and stability. Another is power board, to realize the inverter function and supply electronic power. Due to the suitable dead time of PWM inverter, the outputs variable frequency voltage of the drive is more suitable for controlling of servo motor. For the purpose of small volume, the main control part and power board were integrated. The results of time and frequency domain analyzing show that the servo drive is performance enhancement of high bandwidth control and fast response. The application of the servo drive system on a 3-axises robot is described. As highly integrated of this servo drive system, it provides an economical solution in servo motor control for robot and flexible manufacture and can be sustained without significant design effort.
This paper proposes the formula used for finding the continuous-time PIDA (Proportional-Integral-Derivative-Acceleration) controller39;s parameters based on pole placement technique. Also, provide the formulas for d...
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ISBN:
(纸本)9781538666630
This paper proposes the formula used for finding the continuous-time PIDA (Proportional-Integral-Derivative-Acceleration) controller's parameters based on pole placement technique. Also, provide the formulas for designing the discrete-time PIDA controllers for both of Tustin's method with and without frequency pre-warping. The designers can use the frequency pre-warping to get the better specification as desired. Moreover, as both of these discrete-time PIDA controllers, theirs transfer functions are proper. Then, they are easy to implement in real-time by the Observable Canonical Form of the difference equations.
A trajectory tracking control strategy using a co-reference for a rear-steered non-holonomic vehicle is presented. Given a reference moving on a path, the vehicle has to track the reference and reduce the vehicle-to-r...
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ISBN:
(纸本)9781538666630
A trajectory tracking control strategy using a co-reference for a rear-steered non-holonomic vehicle is presented. Given a reference moving on a path, the vehicle has to track the reference and reduce the vehicle-to-reference distance to the minimum possible distance. In addition, the vehicle has to maintain the change rate of the vehicle-to-reference distance non-positive at the neighborhood of the reference from any initial configuration. A class of barrier Lyapunov Function (BLF) is utilized to analyze the stability of the proposed control strategy. The co-reference is used to guide the vehicle to enter the neighborhood of the reference from the rear side of the reference. The performance of the proposed control strategy is evaluated by simulations and the results are presented.
作者:
Meijer, Bart R.Stigter, JurgenControl Laboratory
Department of Electrical Engineering Delft University of Technology P.O. Box 5031 GA DelftNL 2600 Netherlands Knowledge Based System Group
Department of Technical Mathematics and Informatics Delft University of Technology Julianalaan 132 BC DelftNL 2628 Netherlands
A flexible assembly cell is considered to be an essential building brick for flexible automation of small to medium sized order-based industries. In order to be able to respond adequately to market changes a productio...
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Results from simulations of a Planar Robot Model, when it is placed in the same plane of the action of the gravity force are reviewed in this paper. The model includes several parameters usually discarded in current m...
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ISBN:
(纸本)9789898111319
Results from simulations of a Planar Robot Model, when it is placed in the same plane of the action of the gravity force are reviewed in this paper. The model includes several parameters usually discarded in current models, such as Driving, and Non-linear Friction, for an industrial-type robotic manipulator and its actuators. When we develop more exact representations of the dynamics of a manipulator and their actuators, chaotic behavior is detected for certain parameter values of the robotic manipulator. This chaotic behavior - without external inputs - was exactly controlled by Sliding Modes.
Estimating a robot39;s reachable workspace is a fundamental problem in robotics. For simple kinematic chains within an empty environment this computation can be relatively straightforward. For mobile kinematic struc...
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ISBN:
(纸本)9789896740009
Estimating a robot's reachable workspace is a fundamental problem in robotics. For simple kinematic chains within an empty environment this computation can be relatively straightforward. For mobile kinematic structures and cluttered environments, the problem becomes more challenging. An efficient probabilistic method for workspace estimation is developed by applying a hierarchical strategy and developing extensions to a probabilistic motion planner. Rather than treating each of the degrees of freedom (DOFs) 'equally', a hierarchical representation is used to maximize the volume of the robot's workspace that is identified as reachable for each probe of the environment. Experiments with a simulated mobile manipulator demonstrate that the hierarchical approach is an effective alternative to the use of an estimation process based on the use of a traditional probabilistic planner.
作者:
Zhu HeJing ShaohongWang XiaohongJinan Univ
Room 1012Informat Bldg Jinan Shandong Peoples R China Jinan Univ
Room 1010Informat Bldg Jinan Shandong Peoples R China Jinan Univ
Room 100Informat Bldg336 Nan Xin Zhuang West Rd Jinan Shandong Peoples R China
This paper aims at the problems of low CPU utilization, poor independence between tasks and poor stability of the system, which are common in the single-threaded data acquisition system of traditional cement enterpris...
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ISBN:
(纸本)9781450365307
This paper aims at the problems of low CPU utilization, poor independence between tasks and poor stability of the system, which are common in the single-threaded data acquisition system of traditional cement enterprises, and carry out multi-threaded research and development for the data acquisition system of cement enterprises. The research and development uses the C# to complete the multi-threaded technology, uses the SQL Sever 2012 to store the data, and realizes the collection of each data in the cement enterprise under the Visual Studio 2012 development environment. This paper first introduces the research of multi-threaded technology, and then introduces the design of this multi-threaded data acquisition system software and the design of specific modules. At the end of this paper, the design of data storage table structure and the realization of its function are introduced.
A novel adaptive sliding mode control (ASMC) algorithm is derived to deal with seam tracking control problem of welding robotic manipulator, during the process of large-scale structure component welding. The controlle...
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ISBN:
(纸本)9789897580406
A novel adaptive sliding mode control (ASMC) algorithm is derived to deal with seam tracking control problem of welding robotic manipulator, during the process of large-scale structure component welding. The controllers robustness is verified by the Lyapunov stability theory, and the analytical results show that the proposed algorithm enables better high-precision tracking performance with chattering-free than classic sliding mode control (SMC) algorithm.
This paper addresses the development and applications of the control system based on the real-time operating system (RTOS) RTX which constructs an open architecture control system with real-time performance, flexibili...
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Repetitive control (RC) is an effective method to eliminate the effects of a periodic disturbance to a feedback control system. Applications of RC include an active vibration isolation mount in spacecraft, servomechan...
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ISBN:
(纸本)9781538666630
Repetitive control (RC) is an effective method to eliminate the effects of a periodic disturbance to a feedback control system. Applications of RC include an active vibration isolation mount in spacecraft, servomechanisms, and robotic manipulators. Previous work develops a repetitive controller design for non-minimum phase systems using optimization in frequency domain. The objective of the design is to minimize the maximum error merged with quadratic cost, formulated as quadratically constrained linear programming. This work studies how to make use of the Min-Max merged with quadratic cost design for minimum phase systems. An understanding of how to make design choices for the interchange between Min-Max and quadratic cost for each frequency range is developed. The performance of the proposed design choice evaluated by using a simulation of a commercial robot link shows that the design can produce an effective compensator design for minimum phase systems.
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