Journal articles: 'Digital signal controller'

1

Worth, Daniel. "A Method for Implementing Force-Limited Vibration Control." Journal of the IEST 40, no. 4 (July 31, 1997): 34–41. http://dx.doi.org/10.17764/jiet.2.40.4.u00q32736352n282.

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NASA/Goddard Space Flight Center (NASA/GSFC) has implemented force-limited vibration control on a controller which can only accept one profile. The method uses a personal computer-based digital signal processing board to convert force and/or moment signals into what appears to be an acceleration signal to the controller. This technique allows test centers with older controllers to use the latest force-limited control techniques for random vibration testing. The paper describes the method, hardware, and test procedures used. An example from a test performed at NASA/GSFC is used as a guide.

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Alwan, Nuha A. S., and Zahir M. Hussain. "Deep Learning Control for Digital Feedback Systems: Improved Performance with Robustness against Parameter Change." Electronics 10, no. 11 (May 24, 2021): 1245. http://dx.doi.org/10.3390/electronics10111245.

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Training data for a deep learning (DL) neural network (NN) controller are obtained from the input and output signals of a conventional digital controller that is designed to provide the suitable control signal to a specified plant within a feedback digital control system. It is found that if the DL controller is sufficiently deep (four hidden layers), it can outperform the conventional controller in terms of settling time of the system output transient response to a unit-step reference signal. That is, the DL controller introduces a damping effect. Moreover, it does not need to be retrained to operate with a reference signal of different magnitude, or under system parameter change. Such properties make the DL control more attractive for applications that may undergo parameter variation, such as sensor networks. The promising results of robustness against parameter changes are calling for future research in the direction of robust DL control.

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Tsao, Tsu-Chin. "Optimal Feed-Forward Digital Tracking Controller Design." Journal of Dynamic Systems, Measurement, and Control 116, no. 4 (December 1, 1994): 583–92. http://dx.doi.org/10.1115/1.2899256.

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This paper presents an approach for optimal digital feed-forward tracking controller design. The tracking problem is formulated as a model matching problem, in which the distance between a specified tracking reference model and the achievable tracking performance by feedforward compensation is minimized. Desired input/output characteristics, finite length preview action, tracking of specific classes of constrained signals, time domain reference signal velocity or acceleration bound, and frequency domain weighting are conveniently incorporated in the proposed controller design and their roles in tracking performance are discussed. The tracking error bound is also explicitly expressed in terms of the controller design parameters. An l1 norm optimal tracking controller is proposed as a solution to the mechanical tolerance control problem. A motion control example illustrates the design approach and several aspects of the resulting optimal feedforward controller, including the optimality of the zero phase error tracking controller.

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Mukti, Ersalina Werda, Sulistyo Wijanarko, and Anwar Muqorobin. "Replacement of Analog Automatic Voltage Regulator using Digital Technology." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 1 (February 1, 2016): 53. http://dx.doi.org/10.11591/ijece.v6i1.8814.

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Before the 90’s, many power plants in Indonesia were equipped with analog controllers and now those power plants are still in operation to produce electricity. One of those controller parts is Automatic Voltage Regulator (AVR). If a failure occurs in the AVR, the economic solution is by replacing the damaged electronic component with new component. However this method will not solve the problem if the components are not available in local market or become obsolete. Purchasing the new AVR that compatible with other controller parts cannot be done again because the analog controllers are no longer produced by the vendor. Furthermore, replacement of all the controllers with the current technology become expensive. According to this, an alternative solution is proposed in this paper by designing an AVR that compatible with other controller parts and considering the availability of the electronic components in local market. ATmega8 microcontroller is used to implement a digital AVR and employing op amp based as its signal conditioning. The result shows that the digital AVR can reduce hardware size and power consumption. The digital AVR also meets the computation rate of the computation signal.

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Mukti, Ersalina Werda, Sulistyo Wijanarko, and Anwar Muqorobin. "Replacement of Analog Automatic Voltage Regulator using Digital Technology." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 1 (February 1, 2016): 53. http://dx.doi.org/10.11591/ijece.v6i1.pp53-62.

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Before the 90’s, many power plants in Indonesia were equipped with analog controllers and now those power plants are still in operation to produce electricity. One of those controller parts is Automatic Voltage Regulator (AVR). If a failure occurs in the AVR, the economic solution is by replacing the damaged electronic component with new component. However this method will not solve the problem if the components are not available in local market or become obsolete. Purchasing the new AVR that compatible with other controller parts cannot be done again because the analog controllers are no longer produced by the vendor. Furthermore, replacement of all the controllers with the current technology become expensive. According to this, an alternative solution is proposed in this paper by designing an AVR that compatible with other controller parts and considering the availability of the electronic components in local market. ATmega8 microcontroller is used to implement a digital AVR and employing op amp based as its signal conditioning. The result shows that the digital AVR can reduce hardware size and power consumption. The digital AVR also meets the computation rate of the computation signal.

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Górecki, Krzysztof. "The use of Delfino digital signal controller in power inverter." ITM Web of Conferences 28 (2019): 01017. http://dx.doi.org/10.1051/itmconf/20192801017.

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This article analyzes the implementation of control algorithm for a single-phase power inverter using digital signal controller (DSC). For this purpose, a floating-point digital signal controller with a trigonometric math unit was used. The controller’s task was to control the H-bridge through a dedicated driver for power MOSFET transistors. For this task, transistors made in NexFET technology with low channel resistance were used. The H-bridge is the main power device of a single-phase, two-level power inverter powered by a 12V battery. As a modulation method, regular modulation with carrier signal using a triangular signal was used. The main aim was to show the digital signal controller’s performance in real-time control of power inverters and to present the maximum sampling frequency of the inverter that can be obtained for the example having been analyzed.

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González-Castaño, Catalina, Carlos Restrepo, Roberto Giral, Enric Vidal-Idiarte, and Javier Calvente. "ADC Quantization Effects in Two-Loop Digital Current Controlled DC-DC Power Converters: Analysis and Design Guidelines." Applied Sciences 10, no. 20 (October 15, 2020): 7179. http://dx.doi.org/10.3390/app10207179.

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This paper analyzes the presence of undesired quantization-induced perturbations (QIP) in a dc-dc buck-boost converter using a two-loop digital current control. This work introduces design conditions regarding control laws gains and signal quantization to avoid the quantization effects due to the addition of the outer voltage loop in a digital current controlled converter. The two-loop controller is composed of a multisampled average current control (MACC) in the inner current-programmed loop and a proportional-integrator compensator at the external loop. QIP conditions have been evaluated through simulations and experiments using a digitally controlled pulse width modulation (DPWM) buck-boost converter. A 400 V 1.6 kW proof-of-concept converter has been used to illustrate the presence of QIP and verify the design conditions. The controller is programmed in a digital signal controller (DSC) TMS320F28377S with a DPWM with 8.96-bit equivalent resolution, a 12-bit ADC for current sampling, and a 12-bit ADC for voltage sampling or a 16-bit ADC for voltage error sampling.

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Kahveci, H., H. I. Okumuş, and M. Ekici. "Improved brushless DC motor speed controller with digital signal processor." Electronics Letters 50, no. 12 (June 2014): 864–66. http://dx.doi.org/10.1049/el.2014.0609.

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9

Winterer, Martin. "A New Fast Controller for Digital Signal Processing (DSP) ICS." IEEE Transactions on Consumer Electronics CE-33, no. 3 (August 1987): 121–28. http://dx.doi.org/10.1109/tce.1987.290250.

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MOHAN, N., and S. S. ANG. "A digital-signal-processor based controller for a switching converter." International Journal of Electronics 77, no. 5 (November 1994): 643–56. http://dx.doi.org/10.1080/00207219408926092.

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11

Hahn, Inseob, and Mark Weilert. "Digital signal processor-based dc superconducting quantum interference device controller." Review of Scientific Instruments 72, no. 4 (April 2001): 2203–6. http://dx.doi.org/10.1063/1.1350646.

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Nagahara, Masaaki, and Yutaka Yamamoto. "Digital repetitive controller design via sampled-data delayed signal reconstruction." Automatica 65 (March 2016): 203–9. http://dx.doi.org/10.1016/j.automatica.2015.11.029.

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13

Soman, Sarun, and Sangeetha T.S. "Development of Digital Controller for DC-DC Buck Converter." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 4 (December 1, 2015): 788. http://dx.doi.org/10.11591/ijpeds.v6.i4.pp788-796.

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This paper presents a design & implementation of 3P3Z (3-pole 3-zero) digital controller based on DSC (Digital Signal Controller) for low voltage synchronous Buck Converter. The proposed control involves one voltage control loop. Analog Type-3 controller is designed for Buck Converter using standard frequency response techniques.Type-3 analog controller transforms to 3P3Z controller in discrete domain.Matlab/Simulink model of the Buck Converter with digital controller is developed. Simualtion results for steady state response and load transient response is tested using the model.

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Huba, Mikulas, Stefan Chamraz, Pavol Bistak, and Damir Vrancic. "Making the PI and PID Controller Tuning Inspired by Ziegler and Nichols Precise and Reliable." Sensors 21, no. 18 (September 14, 2021): 6157. http://dx.doi.org/10.3390/s21186157.

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This paper deals with the design of a DC motor speed control implemented by an embedded controller. The design is simple and brings some important changes to the traditional Ziegler–Nichols tuning. The design also includes a novel anti-windup implementation of the controller and an integrated noise-reduction filter design. The proposed tuning method considers all important aspects of the control, such as pre-processing of the measured signals and filtering (to attenuate the measurement noise), time delays of the process, modeling and identification of the process, and constraints on the control signal. Three important aspects of designing PI and PID controllers for processes with noisy output on Arduino-type embedded computers are considered. First, it deals with the integrated design of the input filter and the controller parameters, since both are interdependent. Secondly, the method of setting the controllers from step responses by Ziegler and Nichols is modified for the case of digital signal processing (without drawing the tangent), while it recommends the suitability of its modification in terms of the use of both integral and static models. Third, the most suitable anti-windup solution for the given controller structure is proposed. In summary, the paper shows that an appropriate design of the embedded controller can achieve excellent closed-loop performance even in a noisy process environment with limited control signals.

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Meng, J. D., and J. E. Katz. "Using a digital signal processor as a data stream controller in digital subtraction angiography." IEEE Transactions on Nuclear Science 40, no. 2 (April 1993): 175–78. http://dx.doi.org/10.1109/23.212337.

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Misto, M., Tri Mulyono, and Bowo Eko Cahyono. "Determination of Sucrose Content in Sugarcane Liquids Through Angular Dispersion Angle Measurement." Jurnal ILMU DASAR 20, no. 2 (July 16, 2019): 89. http://dx.doi.org/10.19184/jid.v20i2.8497.

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In the sugar industry, it is important to measure the sucrose content of sugar cane so that an electronic system is needed for measurement. The system was employed an array photodiode as a sensor, red and green laser, operational amplifiers (opamp), an analog to digital converter from Arduino, and a computer. The main operation of the measurement system was conducted by the sensor and controller system in the computer. The controller was programmed with Basic program, a program that suitable for the device. The signal from array photodiode sensor is send to signal processing unit (opamp) and converted to digital signal by ADC. Then the digital code is countered by controller and displayed by monitor computer. Keywords: sugar content, array photodiode, Arduino.

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17

Marufuzzaman, Mohammad, Mamun Bin Ibne Reaz, Labonnah Farzana Rahman, and Tae Gyu Chang. "High-Speed CurrentdqPI Controller for Vector Controlled PMSM Drive." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/709635.

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High-speed current controller for vector controlled permanent magnet synchronous motor (PMSM) is presented. The controller is developed based on modular design for faster calculation and uses fixed-point proportional-integral (PI) method for improved accuracy. Currentdqcontroller is usually implemented in digital signal processor (DSP) based computer. However, DSP based solutions are reaching their physical limits, which are few microseconds. Besides, digital solutions suffer from high implementation cost. In this research, the overall controller is realizing in field programmable gate array (FPGA). FPGA implementation of the overall controlling algorithm will certainly trim down the execution time significantly to guarantee the steadiness of the motor. Agilent 16821A Logic Analyzer is employed to validate the result of the implemented design in FPGA. Experimental results indicate that the proposed currentdqPI controller needs only 50 ns of execution time in 40 MHz clock, which is the lowest computational cycle for the era.

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Wang, Xian Hai, Jin Ling Jia, Guang Jian Cheng, Hai Jun Zhang, and Wen Jun Yu. "Design and Implementation of FPGA-Based Digital PID Controller Using Distributed Arithmetic." Advanced Materials Research 433-440 (January 2012): 5659–65. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.5659.

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This paper proposes a modularized method for the design and implementation of digital PID controller using DA algorithm based on Field Programmable Gate Array (FPGA) device. It is higher integration, lower power consumption, higher processing speed and more convenient reconfiguration compared with PID controllers based on software. The PID controller is modeled by using Simulink and DSP Builder to generate a system model. The controller coefficients are tuned conveniently by simulink and then pre-written into Look-up Tables(LUTs) in model of the proposed PID controller. After modeling, the simulation wave of step response for proposed PID controller is obtained easily by simulink. And the model of digital PID based on DA is then compiled by using Signal Compiler tool in DSP Builder provided by ALTERA corporation and synthesized by using QUARTUS II platform, and then the created file is downloaded into ALTERA’s FPGA device to implement the proposed PID controller.

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Subbarao, Mopidevi, Ch Sai Babu, S. Satyanarayana, and P. Chandra Babu Naidu. "Digital Fuzzy Current Mode Controlled Integrated PFC Converter with External Ramp Compensation." Journal of Circuits, Systems and Computers 27, no. 09 (April 26, 2018): 1850147. http://dx.doi.org/10.1142/s0218126618501475.

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This paper propounded a novel method of design and realization of a digital fuzzy controlled buck integrated power factor correction (PFC) converter. It derives its advantages through the low buck capacitor voltage and single control switch (SW1), which leads to reduced complex control and price. Sub-harmonic oscillations generated in the peak current mode technique can be nullified by using the ramp signal, thereby improving the overall performance of the converter. The fuzzy logic controller (FLC) is robust and effective than the conventional linear controllers like P, PI, PID. In this paper, the digital fuzzy current mode controlled integrated PFC converter with external ramp compensation signal for 100 W load operating in the universal range of voltage (90[Formula: see text]V–265[Formula: see text]V), 50[Formula: see text]Hz has been designed and implemented using MATLAB/Simulink, verified in hardware using the TMS320F2812 digital processor board, and the results are found to be complying with international regulatory standards (IEC 6100-3-2 and IEEE 519-1992).

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Skup, Konrad, Paweł Grudziński, and Piotr Orleański. "Application of Digital Control Techniques for Satellite Medium Power DC-DC Converters." International Journal of Electronics and Telecommunications 57, no. 1 (March 1, 2011): 77–83. http://dx.doi.org/10.2478/v10177-011-0011-1.

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Application of Digital Control Techniques for Satellite Medium Power DC-DC Converters The objective of this paper is to present a work concerning a digital control loop system for satellite medium power DC-DC converters that is done in Space Research Centre. The whole control process of a described power converter is based on a high speed digital signal processing. The paper presents a development of a FPGA digital controller for voltage and current mode stabilization that was implemented using VHDL. The described controllers are based on a classical digital PID controller. The converter used for testing is a 200 kHz, 750W buck converter with 50V/15A output. A high resolution digital PWM approach is presented. Additionally a simple and effective solution of filtering of an analog-to-digital converter output is presented.

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H. A. Gani, A. F., A. A. Bakar, A. Ponniran, M. Hussainar, and M. A. N. Amran. "Design and development of PWM switching for 5-level multiphase interleaved DC/DC boost converter using FPGA." Indonesian Journal of Electrical Engineering and Computer Science 17, no. 1 (January 1, 2020): 131. http://dx.doi.org/10.11591/ijeecs.v17.i1.pp131-140.

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<p>The continuously increasing demand for control on electric power equipment has led to the rapid technological development in various applications such as renewable energy, electric drives, and communication. Pulse Width Modulation (PWM) switching is an important technique to control the output voltage. PWM signals can either be generated using digital controller or analog controller. Digital controllers are widely used to generate PWM signals due to their reliability in solving complex algorithms within short amount of time. Multiphase boost converter is capable to overcome high input current ripple, current stress and semiconductor losses in conventional boost converter. This paper proposes a PWM switching scheme for multiphase interleaved converter using Field Programmable Gate Array (FPGA). The proposed switching scheme uses PWM switching technique that is implemented by programming Altera DE2-70 board. The duty cycle can be easily adjusted using assigned switches on the Altera board. For validation, switching frequency was set to 100 kHz, and then switching signal was observed using oscilloscope.</p>

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A. Asker, Mshari, Khalaf S. Gaeid, Nada N. Tawfeeq, Humam K. Zain, Ali I. Kauther, and Thamir Q Abdullah. "Design and Analysis of Robot PID Controller Using Digital Signal Processing Techniques." International Journal of Engineering & Technology 7, no. 4.37 (December 13, 2018): 103. http://dx.doi.org/10.14419/ijet.v7i4.37.23625.

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Recently robotic is a playing vital role in the life In our modern society, the usage of robotic arms are increasing and much of the work in the industry is now performed by robots. As robots begin to behave like humans in an intelligent manner, control system becomes a major concern. In this paper, design and analyses of the pick and place robot due to control, the forearm, wrist, desired turntable and desired bicep is introduced to construct a closed system with four degrees of freedom (4DOFs). The main performance specifications are the accuracy and stability of the input system for obtaining a good system performance. Implementation of the control system using PID parameters for stability, minimum steady state error, minimum overshoot and faster system response has been carried out. The design of two degree of freedom PID(2DoFPID) to control robotic arm along with first order low pass filter(LPF) to compensate the unwanted signal is improved. To be able to implement such a precise and effective system, feedback system has to be made to improve the overall performance specifications. The digital signal processing controller (Arduino Uno) is used as it is active, cheap , it has open source code and easy to use in the software and hardware applications.Experimental set up developed in addition to the Matlab/Simulink implementation of the complete system. The results and the communication signals test ensure smooth operation of the control system and the effectiveness of the proposed algorithm.

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He, Yi Fang, Jun Jie Li, Qi He, and Zhi Jun Li. "The Elderly Outdoor Sports Monitoring System Based on the Beidou Satellite Navigation System." Applied Mechanics and Materials 513-517 (February 2014): 671–74. http://dx.doi.org/10.4028/www.scientific.net/amm.513-517.671.

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An elderly people monitoring system based on 3-axis digital accelerometer ADXL345 and digital signal controller TMS320F28335 was designed based on 3-axis digital accelerometer ADXL345 and digital signal controller TMS320F28335. The human posture was collected from ADXL345 by the DSC28335. The FFT filtering algorithm was used to improve the detection accuracy. Then the exercise situation of the elderly people was calculated by using Pedometer algorithm. The fall information was calculated by analyzing the rate of acceleration change. The Beidou Satellite Navigation System was designed for collecting position data to protect the elderly people in different situation.

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Xu, Hong Ke, Jia Yu Yang, Ming Qiang Song, Yong Zhao Qu, and Xiao Hong Wang. "Microcontroller-Based Intelligent Traffic Signal Controller Design." Advanced Materials Research 998-999 (July 2014): 621–25. http://dx.doi.org/10.4028/www.scientific.net/amr.998-999.621.

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With the road traffic congestion problems become more and more serious, and the current traffic lights don’t possess the function of revising timely and flexible, it can't meet the requirements of real-time controlling and make the traffic in intersection more efficient. The design of Microcontroller-based traffic signal controller fixes this problem. It based on STC90C51 as CPU solutions; LED lights and digital pipe were used as display module; 8 independent keyboards were used as the only manual input device; Software used the C programming language. The intelligent traffic light system covered the multi-phase and multi-period. So we could choose two-phase/four-phase/six-phase according to the particular road and traffic condition. Besides, it took the special status of emergency vehicles into account. It also had a manual input keyboard so that you could adjust the signal at any time. This design can effectively improve the traffic congestion problem.

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Huang, Shu Wei, and Dan Li Wen. "Distributed Intelligent Control System Design Based on CAN Bus." Applied Mechanics and Materials 336-338 (July 2013): 1241–44. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.1241.

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The hydraulic drive valve intelligent control system was discussed. Two grades, the field cell and the remote control cell, were used in the distributed control system. The communications of the system were implemented by Controller Area Network (CAN). At the first grade, single-chip microcomputer (SCM) acted as the control chip. The sampling pressure signal in pipeline was transformed into the output digital control signal by the controller. The digital direction valve acted as a transformation unit which converts the electric signal to mechanical action in the hydraulic circuit. The control process was realized by the digital signal directly acting on the step electrical motor. At the second grade, the industrial-control computer with a favorable man-machine conversation interface was used to realize monitor function.

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Huang, Shan Yun, Zhao Bo Chen, and Feng Chen Tu. "Intelligent Driver for Magneto-Rheological Damper Based on Digital Signal Controller." Applied Mechanics and Materials 462-463 (November 2013): 788–93. http://dx.doi.org/10.4028/www.scientific.net/amm.462-463.788.

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A novel intelligent driver based on digital signal controller (DSC) has been put forward for magneto-rheological (MR) damper. The working principles of MR damper were described, as well as the hardware circuit scheme of signal condition and MR damper driver etc. on account of TMS320F28335 DSC. A hierarchical control algorithm was designed and the studies for the performance of the driver were conducted. The results suggest that the driver could provide accurate drive current for MR damper, and meanwhile the respond time is less than 2ms, which can meet the drive requirements of MR damper.

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del Campo, I., J. R. González de Mendívil, and J. M. Tarela. "Development of a fuzzy logic controller on a digital signal processor." Microprocessing and Microprogramming 39, no. 2-5 (December 1993): 277–80. http://dx.doi.org/10.1016/0165-6074(93)90105-t.

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Kim, Min-Sung, Kwang-Yong Ko, Choul-Ki Lee, Jun-Ha Jeong, and Nak-Won Heo. "Development of a Communication Protocol for a Digital Traffic Signal Controller." Journal of The Korea Institute of Intelligent Transport Systems 12, no. 3 (June 30, 2013): 1–10. http://dx.doi.org/10.12815/kits.2013.12.3.001.

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Kim, Min-Sung, Kwang-Yong Ko, Choul-Ki Lee, Jun-Ha Jeong, and Nak-Won Heo. "Development of a Communication Protocol for a Digital Traffic Signal Controller." Journal of The Korea Institute of Intelligent Transport Systems 12, no. 3 (June 30, 2013): 1–10. http://dx.doi.org/10.12815/kits.2013.12.3.1.

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Ko, Sejin, Jaekwan Lee, Sangmin Park, Gwang-Yong Gho, and Ilsoo Yun. "A Study on the Development of the Digital Traffic Signal Controller." Journal of The Korea Institute of Intelligent Transport Systems 18, no. 6 (December 31, 2019): 43–59. http://dx.doi.org/10.12815/kits.2019.18.6.43.

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Goh, Yin Lee, Agileswari K. Ramasamy, Farrukh Hafiz Nagi, and Aidil Azwin Zainul Abidin. "Digital Signal Processor Based Over-current Relay Using Fuzzy Logic Controller." Electric Power Components and Systems 39, no. 13 (August 24, 2011): 1437–51. http://dx.doi.org/10.1080/15325008.2011.584111.

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Gurubasavaraj, K. H. "Implementation of a self-tuning controller using digital signal processor chips." IEEE Control Systems Magazine 9, no. 4 (June 1989): 38–42. http://dx.doi.org/10.1109/37.24838.

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Bui, Ngoc Thang, Duc Tri Phan, Thanh Phuoc Nguyen, Giang Hoang, Jaeyeop Choi, Quoc Cuong Bui, and Junghwan Oh. "Real-Time Filtering and ECG Signal Processing Based on Dual-Core Digital Signal Controller System." IEEE Sensors Journal 20, no. 12 (June 15, 2020): 6492–503. http://dx.doi.org/10.1109/jsen.2020.2975006.

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Sankai, Yoshiyuki, Tetsuya Nii, and Shinichi Kariya. "Robot Objective Parallel Calculation and Real-time Control Using a Digital Signal Processor." Journal of Robotics and Mechatronics 10, no. 6 (December 20, 1998): 505–14. http://dx.doi.org/10.20965/jrm.1998.p0505.

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We propose an objective parallel computation/control method, developing the following to solve conventional problems and installing a controller on a robot with links decomposed to objects: 1) parallel calculation for twodimensional link dynamics, 2) downsizing of a high-speed controller using a digital signal processor (DSP), 3) a common robot control library, and 4) parallel calculation control of a multilink system. Evaluating parallel computation/control using the DSP, we verified fine compact controller efficiency in real-time control of multi-DOF systems and control performance comparing overall system control by linear quadratic optimal control.

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Slavov, Ts, J. Kralev, and P. Petkov. "Design and Implementation of Cascade LQR Controller for Stabilization of Two-Wheeled Robot." Information Technologies and Control 14, no. 1 (March 1, 2016): 35–47. http://dx.doi.org/10.1515/itc-2016-0020.

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Abstract In this paper the developed two-wheeled robot and cascade LQR controller, Kalman filters, PI and PID controllers are presented. The cascade LQR controller stabilizes the two-wheeled robot in upright position. The PID controller ensures good tracking of wheel position reference and the PI controller steers two-wheeled robot rotation around the vertical axis. A software in MATLAB®/Simulink environment intended for design and generation of control code which is embedded in a Texas Instruments Digital Signal Controller is developed. Simulation and experimental results of system performance are given that confirm the efficiency of the control system developed.

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Li, Yu Sen, and Ying Sun. "Design of Process Controller Based on PCI Interface and CPLD Technology." Advanced Materials Research 614-615 (December 2012): 1562–65. http://dx.doi.org/10.4028/www.scientific.net/amr.614-615.1562.

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In order to realize the sensor signal acquisition and analysis of data, according to data acquisition system design ideas of the PCI bus, applying to CPLD complex programmable controller and CH365 interface chip and combined with the actual needs of data collection ,designed a kind of low cost, high speed process controller. CPLD realizes data cache control and the control of reading. This design can gather 16 roads analog signals and real-time pulse signal of 8 roads on the same time, which includes a 16-bit digital output channel and a 32-bit counter, could be used in the real-time control.

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Juang, Jih Gau, and Zong Ru Yu. "Application of Embedded System to Intelligent Control Based on CMAC-SoPC." Applied Mechanics and Materials 58-60 (June 2011): 2251–56. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.2251.

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This paper presents a control problem of a twin rotor MIMO system (TRMS) based on the system on programmable chip (SoPC). The control system utilizes the cerebellar model articulation controller (CMAC) as a compensator for PID control. The CMAC has fast learning capability that can provide real time compensation for PID controller. In the hardware implementation, HCTL-2016 is used to encode AB phase voltage into digital signals. Verilog HDL is utilized to encode program that can receive and trigger signals from HCTL-2016 on Altera Nios II FPGA. By coding the programmable chip control signal can be passed to the controller. The processed signal is converted by a D/A converter and is transferred into voltage. The command signal is then sent back to the TRMS to control its movement. Experimental results show that the hybrid CMAC-PID can control the TRMS to reach desired position and track specified trajectory efficiently.

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Zhang, Zi Sheng, Dao Liu, Bo Feng Liu, Xiao Dong Shi, and Zhi Qiang Liu. "Temperature of Transformer Controller Based on TMS320C6713." Advanced Materials Research 823 (October 2013): 555–58. http://dx.doi.org/10.4028/www.scientific.net/amr.823.555.

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In order to improve the level of automation and realize remote control of the transformer temperature control system, a fast remote automatic control system that based on the chip TMS320C6713 was designed by us. Using four temperature sensors (Pt100) tow amplifier and analogy to digital (A/D) convertor detect deal with the signal of the temperature of winding and environmental. According with the temperature of transformer to control the cooling device switch on or off, the service life of the radiator was extended. In the design the digital signal processor (DSP) chip is communication with the central control room through the RS-485 bus, which makes the remote transformer temperature monitor into reality. In addition, this system is more versatility and reliability than the traditional device.

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Kalyanraj, D., and S. Lenin Prakash. "Design and Digital Implementation of Constant Frequency Hysteresis Current Controller for Three-Phase Voltage Source Inverter Using TMS320F2812." International Journal of Emerging Electric Power Systems 15, no. 1 (January 18, 2014): 13–23. http://dx.doi.org/10.1515/ijeeps-2013-0141.

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Abstract A constant frequency hysteresis current control technique for a three-phase voltage source inverter (VSI) has been developed for AC drives, power quality and renewable energy applications. This paper presents a digital implementation of a constant frequency hysteresis current control technique for a three-phase VSI feeding an inductive load, using digital signal controller TMS320F2812. The limitations of variable frequency hysteresis control have been discussed and overcoming these limitations by means of digital implementation has been proposed. The complete design procedure of the proposed technique has been presented with an illustrative example. The three-phase VSI feeding an inductive load has also been simulated by using MATLAB and the simulation results have been presented. The hardware results of hysteresis current controlled three-phase VSI feeding an inductive load have been presented. Also the performance analysis of the hysteresis current controller has been presented. Operation of this controller has also been explained with a help of phase plane trajectory of hysteresis controller.

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Selvaraj, Santthosh, Erkan Bayram, and Renato Nega. "Comparison of System-Level Design Approaches on Different Types of Digitally-Controlled Ring-Oscillator." Technologies 9, no. 2 (May 19, 2021): 38. http://dx.doi.org/10.3390/technologies9020038.

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This paper presents a comparative study between two different implementations of digitally-controlled-oscillators (DCOs), whcih is the DAC-based and the digital controller-based DCO in TSMC 65 nm CMOS technology. This paper focuses on ring-oscillator architectures due to their high stability against PVT. The DAC-based oscillator implements a differential architecture, and the digital controller-based architecture operates in a single-ended signal. The SFDR of the DAC-based DCO is 77.2 dBc and controller-based DCO is 56.8 dBc at 125 MHz offset. The Monte-Carlo simulation gives a deviation of 7.4% and 8.5% for the DAC-based and controller-based DCO, respectively. The phase noise performance of the DAC-based DCO and controller-based DCO is −78.9 dBc/Hz and −81.3 dBc/Hz at 1 MHz offset, respectively. The implementations are given and compared according to their performance based on post-layout simulation results.

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Cho, Sungjoon, Ho-Sung Kang, Kyo-Beum Lee, and Ji-Yoon Yoo. "Performance Improvement of a Grid-Connected Inverter under Distorted Grid Voltage Using a Harmonic Extractor." Electronics 8, no. 9 (September 16, 2019): 1038. http://dx.doi.org/10.3390/electronics8091038.

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This paper introduces an improved current control strategy for a grid-connected inverter system operating under distorted grid voltage conditions. Although existing current controllers for grid-connected inverters have proportional integral gains with suitable bandwidth, low-order harmonic components can be generated by distorted grid voltages. The proposed improved current controller is established in a synchronous reference frame that rotates at harmonic frequency. The input signals for the harmonic current controller should contain only the specific harmonic components requiring suppression. Therefore, the proposed current controller uses a harmonic extractor to distinguish current signals from fundamental and specific harmonic components. The harmonic extractor retains only the relevant harmonic components for individual current controllers with high harmonic signal ratios. This paper introduces two different strategies to extract specific harmonic components for the current controller. The proposed control strategy does not require any additional hardware filter circuits and can be implemented easily by designing a suitable digital filter. When using the proposed method, grid current quality is significantly improved compared to conventional methods that do not include harmonic extractors. The effectiveness of the proposed method is verified through simulations and practical experiments.

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Han, Mangi, and Youngmin Kim. "Efficient Implementation of Multichannel FM and T-DMB Repeater in FPGA with Automatic Gain Controller." Electronics 8, no. 5 (April 29, 2019): 482. http://dx.doi.org/10.3390/electronics8050482.

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In this study, we implemented a high-performance multichannel repeater, both for FM and T-Digital Multimedia Broadcasting (DMB) signals using a Field Programmable Gate Array (FPGA). In a system for providing services using wireless communication, a radio-shaded area is inevitably generated due to various obstacles. Thus, an electronic device that receives weak or low-level signals and retransmits them at a higher level is crucial. In addition, parallel implementation of digital filters and gain controllers is necessary for a multichannel repeater. When power level is too low or too high, the repeater is required to compensate the power level and ensure a stable signal. However, analog- and software-based repeaters are expensive and they are difficult to install. They also cannot effectively process multichannel in parallel. The proposed system exploits various digital signal-processing algorithms, which include modulation, demodulation, Cascaded Integrator Comb (CIC) filters, Finite Impulse Response (FIR) filters, Interpolated Second Ordered Polynomials (ISOP) filters, and Automatic Gain Controllers (AGCs). The newly proposed AGC is more efficient than others in terms of computation amount and throughput. The designed digital circuit was implemented by using Verilog HDL, and tested using a Xilinx Kintex 7 device. As a result, the proposed repeater can simultaneously handle 40 FM channels and 6 DMB channels in parallel. Output power level is also always maintained by the AGC.

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Shin, Hojoon, Euihoon Chung, and Jung-Ik Ha. "Cost-Effective High-Performance Digital Control Method in Series-Series Compensated Wireless Power Transfer System." Electronics 9, no. 11 (October 26, 2020): 1772. http://dx.doi.org/10.3390/electronics9111772.

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This paper proposes a control method for a digital signal processor based series-series (SS) compensated wireless power transfer system. In the control method, load resistance and mutual inductance are identified simultaneously, and output voltage can be estimated by using only the primary side voltage and current without direct feedback from the secondary side circuit. Since this estimation method requires a complex mathematical calculation procedure, a digital signal processor is used in this system. One of the major disadvantages of using a digital controller in this system is a limitation of sampling rates. Therefore, in this paper, several current reconstruction methods with limited sampling rates are investigated and applied. As a result, this controller not only reduces the cost of the system but also shows good estimation performance within the limited digital controller unit resource. The proposed control concept is verified by experimental results with a 48W laboratory prototype.

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Hu, Jwusheng, and Masayoshi Tomizuka. "A Digital Segmented Repetitive Control Algorithm." Journal of Dynamic Systems, Measurement, and Control 116, no. 4 (December 1, 1994): 577–82. http://dx.doi.org/10.1115/1.2899255.

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This paper presents the structure and analysis of the segmented discrete-time repetitive controller. The repetitive controller is designed to reject periodic disturbance and/or track periodic reference signal with known period. Resulted from the Internal Model Principle, the repetitive control law is applied to the entire control path. However, when crucial segments within a control path are of concern, the segmented repetitive control law, which applies control actions only to those segments, can be utilized to save the memory space. It is shown that such a segmented repetitive control system is stable if the original nonsegmented one is stable.

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Soliman, Hisham M., Ashraf Saleem, Tarek A. Tutunji, and Serein Al Ratrout. "Robust digital pole-placer for electric drives based on uncertain diophantine equation and interval mathematics." Transactions of the Institute of Measurement and Control 40, no. 8 (May 11, 2017): 2546–59. http://dx.doi.org/10.1177/0142331217705589.

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In this paper, a novel robust digital controller design is proposed and implemented for induction motor speed control. The objective is to design a robust output feedback controller that places the closed-loop poles in a specified region in order to achieve the desired dynamic performance for a system with variable load. The design is carried out in the frequency domain by solving the uncertain Diophantine equation using interval mathematics and non-linear optimization method. In order to capture the load variations, the characteristic equation is relaxed and enlarged from a fixed-point to an interval set. A simple model-based design methodology is adopted in this work and implemented experimentally using a Hardware-in-the-Loop environment. The proposed design is simulated and then validated using real induction drive system. The proposed controller is compared with two other controllers: the auto tuned PID and a least-square-based robust controller. Experimental results show that the designed robust controller provides a better dynamic response than conventional controllers used in the industry when the motor’s load is varied. These results validate the proposed design as the plant’s output follows the reference signal with minimal overshoot and settling time.

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Li, Yan Zhe, Duo Wang Fan, and Yang Zhao. "Control on Arc Source Device during Arc Ion Plating." Advanced Materials Research 204-210 (February 2011): 2113–16. http://dx.doi.org/10.4028/www.scientific.net/amr.204-210.2113.

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A controller based on DSP (Digital signal processor) is built during Arc Ion Plating. The purpose of controller is to realize real-time and flexible control on Arc Source Device. It is shown that by using DSP, Arc Source Device can be controlled and protected online. As a result, not only can Arc Source Device change output current according to the order from upper monitor momentarily, but also the faulty or failed Arc Source Device can be isolated rapidly.

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Singh, Sachin, and Sanjeev Singh. "Position Sensorless Control for PMBLDC Motor Drive Using Digital Signal Processor." Journal of Circuits, Systems and Computers 25, no. 07 (April 22, 2016): 1650077. http://dx.doi.org/10.1142/s0218126616500778.

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This paper presents a complete position sensorless control scheme for permanent magnet brushless DC motors (PMBLDCMs) using back-EMF sensing method. The controller is designed in such a way that it provides smooth shifting from open-loop speed-up mode to back-EMF sensing mode at any speed, especially at very low speeds, i.e., less than 2% of the rated speed. The proposed scheme is a simple and cost effective implementation of back-EMF sensing method, which does not require any filtering or phase shift to generate commutation pulses. The proposed controller is designed and modeled for a PMBLDCM rated at 4600[Formula: see text]rpm, 310[Formula: see text]V and 2.2[Formula: see text]N[Formula: see text]m torque and its performance is simulated in MATLAB/SIMULINK environment. The obtained simulation results are validated on a prototype developed in the lab using a digital signal processor (DSP) namely TI 2812 DSP in a wide range of speeds in position sensorless mode.

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Flaxer, Eli, and Sharly Fleischer. "Differential chopping controller with high-resolution and accuracy using digital signal processor." Review of Scientific Instruments 90, no. 7 (July 2019): 076106. http://dx.doi.org/10.1063/1.5098847.

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Limketkai, B., J. Granger, M. Weilert, and Inseob Hahn. "Multiple channel superconducting quantum interference device controller using a digital signal processor." Review of Scientific Instruments 73, no. 11 (November 2002): 4010–13. http://dx.doi.org/10.1063/1.1511805.

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Wu, Ya-Jie, Chi-Seng Lam, Man-Chung Wong, Sai-Weng Sin, and Rui Paulo Martins. "A Reconfigurable and Extendable Digital Architecture for Mixed Signal Power Electronics Controller." IEEE Transactions on Circuits and Systems II: Express Briefs 65, no. 10 (October 2018): 1480–84. http://dx.doi.org/10.1109/tcsii.2018.2860903.

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Journal articles on the topic 'Digital signal controller'

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