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Open-loop controller

About: Open-loop controller is a research topic. Over the lifetime, 16148 publications have been published within this topic receiving 224014 citations. The topic is also known as: non-feedback controller & open-loop control law.


Papers
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Patent
15 Apr 2002
TL;DR: In this article, a closed-loop control system that remotely controls a device over a distributed communications system includes a device that is connected to the distributed communication system and that generates super-media feedback signals.
Abstract: A closed-loop control system that remotely controls a device over a distributed communications system includes a device that is connected to the distributed communications system and that generates super-media feedback signals. A computer is connected to the distributed communications system and includes a controller that provides super-media feedback. The computer generates and transmits command signals using the controller to the device and outputs the super-media feedback signals to the controller. The closed-loop control system is event-based to ensure stability and synchronization of the closed-loop system.

141 citations

Patent
16 Nov 2000
TL;DR: In this paper, a hand operated controller or converter for allowing hand inputs to be converted or translated into electrical outputs, the controller structured with a plate or platform moveable relative to a base or housing about two mutually perpendicular axes generally parallel to the platform to effect a plurality of sensors for defining output signal based on movement of the platform.
Abstract: A hand operated controller or converter structured for allowing hand inputs to be converted or translated into electrical outputs, the controller structured with a plate or platform moveable relative to a base or housing about two mutually perpendicular axes generally parallel to the platform to effect a plurality of sensors for defining output signal(s) based on movement of the platform The sensors each have an electrically active activator spatially separated from an electric contact surface A tactile feedback motor with shaft and offset weight is mounted as a component of the controller for providing vibration to be felt by a hand operating the controller In some embodiments the sensors are pressure sensitive variable output sensors

141 citations

Journal ArticleDOI
TL;DR: The design concepts, configuration, and performance of the motor, controller, and drive system developed for this high-performance electric vehicle, designated as the IZA, are described.
Abstract: We have, in accordance with new concepts, undertaken the development of a high-performance electric motor vehicle, designated as the IZA. The main performance features of the IZA are a maximum speed of 176 km/h, a range of 548 km per charge at a constant speed of 30 km/h, and acceleration from 0 to 400 m in 18 s. We have developed a direct driving in-wheel motor and controller in order to achieve high performance characteristics. The in-wheel motor is composed of an outer rotor with a rare earth permanent magnet (Sm-Co) and an inner stator. The motor drive controller consists of a three-phase inverter and a microprocessor-based controller. The maximum output and maximum torque of each total drive system, including motor and inverter, are 25 kW and 42.5 kg/spl middot/m, respectively, and the total efficiency of the drive system is over 90% at the rated speed. The performance of the motor, controller, and drive system have been confirmed by numerous simplex and vehicle transit tests. This paper describes the design concepts, configuration, and performance of the motor, controller, and drive system developed for this high-performance electric vehicle.

141 citations

Proceedings ArticleDOI
02 Jul 2007
TL;DR: In this article, a new controller-tuning scheme for linear time-invariant single-input single-output (SISO) systems is proposed based on the correlation approach, which uses a single set of input/output data taken in open-loop or closed-loop operation.
Abstract: Data-driven controller tuning for the model-reference control problem is investigated. A new controller-tuning scheme for linear time-invariant single-input single-output systems is proposed. The method, which is based on the correlation approach, uses a single set of input/output data taken in open-loop or closed-loop operation. A specific choice of instrumental variables makes the correlation criterion an approximation of the model-reference control criterion. The correlation criterion and the controller parameters are asymptotically not affected by noise. Although for finite data length the criterion is biased, a bias analysis shows that it generally improves the controller robustness. The effectiveness of the proposed method is illustrated via a simulation example.

141 citations

Journal ArticleDOI
TL;DR: In this article, a radial basis function neural network controller (RBFNN) is proposed for UPFC to improve the transient stability performance of a power system. But the performance of the new single neuron controller is evaluated using both single-machine infinite-bus and three-machine power systems subjected to various transient disturbances.
Abstract: This paper presents the design of radial basis function neural network controllers (RBFNN) for UPFC to improve the transient stability performance of a power system. The RBFNN uses either a single neuron or multi-neuron architecture and the parameters are dynamically adjusted using an error surface derived from active or reactive power/voltage deviations at the UPFC injection bus. The performance of the new single neuron controller is evaluated using both single-machine infinite-bus and three-machine power systems subjected to various transient disturbances. In the case of three-machine 8-bus power system, the performance of the single neuron RBF controller is compared with a BP (backpropagation) algorithm based multi-layered ANN controller. Further it is seen that by using a multi-input multi-neuron RBF controller, instead of a single neuron one, the critical clearing time and damping performance are improved. The new RBFNN controller for UPFC exhibits a superior damping performance in comparison to the existing PI controllers. Its simple architecture reduces the computational burden thereby making it attractive for real-time implementation.

140 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202371
2022124
202167
202079
201998
2018155