7th International Workshop on Advanced Motion Control. Proceedings (Cat. No.02TH8623)
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Các bài báo tiêu biểu
Loss-function optimal control of the positioning servomotors with static torque proportional to the speed
- Trang 232-235
The maximum efficiency use of industrial purpose equipment is an actual concern
imposed by the necessity of increasing the productivity of all the equipment and
reducing the energy consumption. Taking into account this trend, in the present
paper, the authors try to determine the optimal control law of the positioning
an open-loop servo system with static torque proportional to the speed so that
t...
#Optimal control #Servomotors #Torque #Equations #Servomechanisms #Energy loss #Voltage #Electrical equipment industry #Productivity #Energy consumption
Precise torque and speed control in pure electric braking operation of AC traction in low speed range
- Trang 142-147
This paper describes a method to achieve precise torque and speed control of AC
traction in low speed range. The authors apply an instantaneous speed observer
to improve the speed information and propose a new pole assignment by analysis
in multirate-discrete-time domain. Validity of this method is verified though
various simulations.
#Velocity control #Rail transportation #Sampling methods #Open loop systems #Information analysis #Electric vehicles #Footwear #Temperature #Proposals #Vehicle detection
Initial value compensation applied to disturbance observer-based servo control in HDD
- Trang 34-39
The mode switching control (MSC) technique makes use of several controllers,
each one designed to optimize a particular control objective. The switching
between-controllers is performed at the supervisory level. MSC is often used
when the control objective is different in different operational regions as in
the HDD servo system where three different operation modes can be identified,
i.e. seek, se...
#Servosystems #State estimation #State feedback #Control systems #Servomechanisms #Informatics #Transient response #Magnetic heads #Design optimization #Closed loop systems
Optimization of unilaterally constrained telerobots
- Trang 488-493
Mobile telerobots, that are not rigidly fixed but unilaterally constrained to
the environment, operate under the risk of losing their defined position,
starting to slip away or to turn over. It is the objective to minimize this risk
by finding an optimal geometrical configuration and position of the mobile
telerobot, so that a given task is performed properly, under regard of some
mechanical const...
#Constraint optimization #Telerobotics #Torque #Mathematical model #Boundary conditions #Control systems #Mobile robots #Robot kinematics #Deformable models #Power system modeling
External disturbance rejection control based on identification of transfer characteristics from the acceleration sensor for access control of hard disk drive system
- Trang 52-56
In this paper, a new method for external disturbance rejection control which is
based on the identification of transfer characteristics from an acceleration
sensor is proposed. For hard disk drives, the external disturbance which should
be reduced is growing with widespread use of movable computers and other
independent machines. In order to reject the effect of the external disturbance,
the autho...
#Control systems #Acceleration #Sensor phenomena and characterization #Sensor systems #Access control #Hard disks #Signal design #Algorithm design and analysis #Least squares approximation #Resonance light scattering
High efficiency SVM technique for VSI
- Trang 269-274
A space vector modulation technique for voltage source inverter which takes into
account the power modules switching losses is presented in the paper. It is
based on three digital separate circuits, which generate the modulation
switching pattern by using a clock unit with three separate programmable
frequency divisors. In particular, for each leg of the inverter, the switching
frequency can be se...
#Support vector machines #Inverters #Multichip modules #Voltage #Switching loss #Digital modulation #Modulation coding #Switching circuits #Clocks #Frequency conversion
Laser proximity scanner correlation based method for cooperative localization and map building
- Trang 484-487
This article is concerned with an autonomous robot self-localization, that is
the first step of robot navigation. Only if the robot knows where it is relative
to a suitable coordinate frame, can it plan its trajectory, and plan the whole
mission. The next important part of the autonomous mobile robotic system is a
map of the environment. Many self-localization modules suppose the map of the
neighb...
#Robot kinematics #Robot sensing systems #Mobile robots #Wheels #Mathematical model #Switches #Laser modes #Laser transitions #Object detection #Least squares approximation
Supervisory fuzzy control of non-linear motion system
- Trang 341-346
High performance AC drives requiring good position command tracking and load
regulation responses are increasingly demanded in industrial applications. The
adaptive control methods that take plant disturbances suppression into account
are being used for driving either nonlinear systems or nonconstant parameters
systems. Generally, the adaptation is achieved by using the model reference
approach or...
#Fuzzy control #Robust stability #Electrical equipment industry #Adaptive control #Nonlinear systems #Parameter estimation #Control systems #Fuzzy logic #Torque control #Computational modeling
Principles and implementation of permanent magnet synchronous motor zero-speed sensorless control
- Trang 247-250
This paper presents an implementation of zero speed sensorless control for
permanent magnet synchronous machines (PMSM). The paper focuses on the
principles and practical implementation of high frequency injection technology
in a salient PMSM. The method using rotating vector, carrier frequency
excitation and heterodyning, tracking observers for position estimation is
discussed. A DSP-based drive ...
#Permanent magnet motors #Sensorless control #Stators #Frequency estimation #Inductance #Synchronous machines #Synchronous motors #Rotors #Voltage #Motion control
Neural network enhancement of closed-loop controllers for nonlinear systems
- Trang 291-295
The actual trend is to combine traditional control methods with neural networks
in parallel. This paper places the neural network inside the closed loop, in
series with the existing controller. With the neural network inside the
closed-loop, randomly initialized weights, unknown performance levels, and
multiple reinitializations are more difficult. A problem not so readily seen is
that the weights...
#Neural networks #Nonlinear control systems #Control systems #Nonlinear systems #Automatic control #Automation #White noise #Convergence #Neurofeedback #Testing