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Journal articles on the topic 'Direct digital control'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Bharti, Om Prakash. "Direct Digital Control." IOSR Journal of Electrical and Electronics Engineering 7, no. 4 (2013): 06–10. http://dx.doi.org/10.9790/1676-0740610.

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2

Kelly, George E., William B. May, and Cheol Park. "Applying direct digital control." Batiment International, Building Research and Practice 14, no. 2 (1986): 114–23. http://dx.doi.org/10.1080/01823328608726729.

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3

Li, Sheng, and Jian Ruan. "DIRECT DIGITAL CONTROL FOR 2D PRESSURE CONTROL VALVE." Proceedings of the JFPS International Symposium on Fluid Power 2002, no. 5-3 (2002): 751–56. http://dx.doi.org/10.5739/isfp.2002.751.

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4

Verteshev, Sergei, and Vladimir Konevtsov. "DIRECT DIGITAL CONTROL IN A COMPLEX OF SOFTWARE DESIGN OF DIGITAL CONTROL SYSTEMS." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 3 (June 15, 2017): 332. http://dx.doi.org/10.17770/etr2017vol3.2534.

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This article provides the functionality of creating direct digital control devices in the computer-aided design of digital automatic control systems (CAD of digital ACS), in a complex of software design of digital control systems (SDSDC complex) for automated process control systems. Technical tools are defined by the international standard IEC 61131-1: 2003 (Part 1: General data). The possibility of implementing SDSDC complex in direct digital control, single-cycle and multi-cycle ladder diagrams, identification of objects of management and synthesis of digital controllers in comparison with

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5

Verteshev, Sergei, and Vladimir Konevtsov. "DIRECT DIGITAL CONTROL IN A COMPLEX OF SOFTWARE DESIGN OF DIGITAL CONTROL SYSTEMS." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 3 (June 15, 2017): 337. http://dx.doi.org/10.17770/etr2017vol3.2536.

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This article provides the functionality of creating direct digital control devices in the computer-aided design of digital automatic control systems (CAD of digital ACS), in a complex of software design of digital control systems (SDSDC complex) for automated process control systems. Technical tools are defined by the international standard IEC 61131-1: 2003 (Part 1: General data). The possibility of implementing SDSDC complex in direct digital control, single-cycle and multi-cycle ladder diagrams, identification of objects of management and synthesis of digital controllers in comparison with

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6

McGowan, John C. "A Feature Issue on Direct Digital Control Communications." Strategic Planning for Energy and the Environment 18, no. 2 (1998): 5. http://dx.doi.org/10.1080/10485236.1998.10530550.

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7

Wagner, Thomas, and John Valasek. "Digital Autoland Control Laws Using Quantitative Feedback Theory and Direct Digital Design." Journal of Guidance, Control, and Dynamics 30, no. 5 (2007): 1399–413. http://dx.doi.org/10.2514/1.27761.

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8

Ishihara, Tadashi. "Direct digital design of computed torque controllers." Journal of Robotic Systems 11, no. 3 (1994): 197–209. http://dx.doi.org/10.1002/rob.4620110306.

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9

Ostrovlyanchik, Viktor Yu, Viktor Yu Ostrovlyanchik, Vasiliy A. Kubarev, et al. "FPGA-BASED DIRECT DIGITAL CONTROL SYSTEM FOR THYRISTOR DRIVE." Mining Equipment and Electromechanics 141, no. 1 (2019): 33–39. http://dx.doi.org/10.26730/1816-4528-2019-1-33-39.

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10

Arahal, M. R., F. Barrero, M. G. Ortega, and C. Martin. "Harmonic analysis of direct digital control of voltage inverters." Mathematics and Computers in Simulation 130 (December 2016): 155–66. http://dx.doi.org/10.1016/j.matcom.2016.02.001.

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11

Pyzik, A. T. "Direct Digital Modelling and Control of the HCN Plant." IFAC Proceedings Volumes 18, no. 11 (1985): 111–14. http://dx.doi.org/10.1016/s1474-6670(17)60116-2.

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12

Song, E. H., and B. H. Kwon. "A direct digital control for the phase-controlled rectifier." IEEE Transactions on Industrial Electronics 38, no. 5 (1991): 337–43. http://dx.doi.org/10.1109/41.97553.

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13

Wellstead, P. E. "Book Review: Direct Digital Control Systems: J. B. KNOWLES." International Journal of Electrical Engineering & Education 32, no. 3 (1995): 285. http://dx.doi.org/10.1177/002072099503200321.

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14

Lim, C. M., W. C. Tan, E. N. Chee, H. M. Eio, and Y. K. May. "A microcomputer based system for teaching direct digital control." Computers & Education 11, no. 4 (1987): 241–51. http://dx.doi.org/10.1016/0360-1315(87)90027-3.

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15

Booth, J. Richard, and Phaneendra B. Kondapi. "Direct digital control of environmentally isolated seafood manufacturing systems." Journal of Materials Processing Technology 61, no. 1-2 (1996): 27–33. http://dx.doi.org/10.1016/0924-0136(96)02461-2.

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16

Kapat, Santanu. "Selectively Sampled Subharmonic-Free Digital Current Mode Control Using Direct Duty Control." IEEE Transactions on Circuits and Systems II: Express Briefs 62, no. 3 (2015): 311–15. http://dx.doi.org/10.1109/tcsii.2014.2369091.

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17

Cherchas, D. B., A. Abdelmessih, and M. Townsend. "A Direct Digital Control Algorithm for Control of a Single Environmental Space." Journal of Dynamic Systems, Measurement, and Control 107, no. 4 (1985): 324–31. http://dx.doi.org/10.1115/1.3140743.

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A direct digital control algorithm for control of dry bulb temperature in a single environmental space is developed. The algorithm is based on a bilinear mathematical model, developed in the paper, of the response of the space dry bulb temperature and moisture content. The algorithm is somewhat unique in that it includes feedback and feedforward terms in a manner respecting the bilinear nature of the controlled process and as well, minimizes a practical performance index. The discrete time form of the algorithm is presented and simulation results given.

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18

Lee, Yong Hui, and Hwan Seok Kim. "Digital Controller Design to Control the Direct Current Motor System." International Journal of Control and Automation 7, no. 9 (2014): 283–88. http://dx.doi.org/10.14257/ijca.2014.7.9.24.

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19

Yalçın, Yaprak, Leyla Gören-Sümer, and Salman Kurtulan. "Robust Disturbance Attenuation in Hamiltonian Systems Via Direct Digital Control." Asian Journal of Control 18, no. 1 (2014): 273–82. http://dx.doi.org/10.1002/asjc.1019.

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20

Ollero, A., and A. J. García-Cerezo. "Direct digital control, auto-tuning and supervision using fuzzy logic." Fuzzy Sets and Systems 30, no. 2 (1989): 135–53. http://dx.doi.org/10.1016/0165-0114(89)90076-6.

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21

Ahmed, K. Anis. "In Bangladesh: Direct Control of Media Trumps Fake News." Journal of Asian Studies 77, no. 4 (2018): 909–22. http://dx.doi.org/10.1017/s0021911818002516.

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Mainstream media faces challenges in developed democracies like never before. On one hand, seemingly “free” digital (including social media) options are eroding the market for print drastically. Ads are not so much shifting from print to digital, but apparently simply disappearing. In the face of the pressures stemming from changing economics of the news business—which still has to be gathered at great expense, even if it can be distributed or shared by third parties practically for free (denying the gatherers their share of revenue)—one now encounters a new form of threat that is more politic

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22

Kim, Young-Chol, Lihua Jin, Jin-Mok Lee, and Jae-Ho Choi. "Direct Digital Control of Single-Phase AC/DC PWM Converter System." Journal of Power Electronics 10, no. 5 (2010): 518–27. http://dx.doi.org/10.6113/jpe.2010.10.5.518.

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23

Benchimol, D., K. Näsström, and XQ Shi. "Evaluation of automatic exposure control in a direct digital intraoral system." Dentomaxillofacial Radiology 38, no. 6 (2009): 407–12. http://dx.doi.org/10.1259/dmfr/22255081.

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24

ZOLGHADRI, M. R., and D. ROYE. "A FULLY DIGITAL SENSORLESS DIRECT TORQUE CONTROL SYSTEM FOR SYNCHRONOUS MACHINE." Electric Machines & Power Systems 26, no. 7 (1998): 709–21. http://dx.doi.org/10.1080/07313569808955853.

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25

Grunwald, Scott L., and Robert F. Stengel. "Design and flight testing of digital direct side-force control laws." Journal of Guidance, Control, and Dynamics 8, no. 2 (1985): 188–93. http://dx.doi.org/10.2514/3.19958.

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26

WANG, CHANG-LI, and PETER C. YOUNG. "Direct digital control by input-output, state variable feedback: theoretical background." International Journal of Control 47, no. 1 (1988): 97–109. http://dx.doi.org/10.1080/00207178808905999.

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27

Vishnerevsky, Vladimir Tadeushevich, Igor Sergeyevich Stasenko, Aleksey Anatolyevich Korneyev, and Gennady Sergeyevich Lenevsky. "DIRECT DIGITAL CONTROL IN THE ELECTRIC DRIVE SYSTEM WITH DISTRIBUTED PARAMETERS." Вестник Белорусско-Российского университета, no. 2 (2014): 123–31. http://dx.doi.org/10.53078/20778481_2014_2_123.

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28

Rodríguez-Ponce, Rafael, and Francisco Gustavo Mota-Muñoz. "Microcontroller-Based Direct Torque Control Servodrive." Journal of Robotics 2020 (February 8, 2020): 1–11. http://dx.doi.org/10.1155/2020/9152494.

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Robot technology has become an integral part of the automotive industry in several tasks such as material handling, welding, painting, and part assembly. Therefore, the knowledge and skills to control the electric motors in these manipulators are essential for undergraduate electrical engineering students. Currently, the digital signal processor (DSP) is the core chip in industrial motor-control drives; however, the implementation of DSP control algorithms can be quite challenging for an experienced programmer, even more so for the novice. Considerable research has been done on this topic, alt

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29

Krim, Saber, Soufien Gdaim, Abdellatif Mtibaa, and Mohamed Faouzi Mimouni. "FPGA-Based Implementation Direct Torque Control of Induction Motor." International Journal of Power Electronics and Drive Systems (IJPEDS) 5, no. 3 (2015): 293. http://dx.doi.org/10.11591/ijpeds.v5.i3.pp293-304.

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<p>This paper proposes a digital implementation of the direct torque control (DTC) of an Induction Motor (IM) with an observation strategy on the Field Programmable Gate Array (FPGA). The hardware solution based on the FPGA is caracterised by fast processing speed due to the parallel processing. In this study the FPGA is used to overcome the limitation of the software solutions (Digital Signal Processor (DSP) and Microcontroller). Also, the DTC of IM has many drawbacks such as for example; The open loop pure integration has from the problems of integration especially at the low speed and

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30

Guo, Jian, Jie Zhu, Jiu Liu, and Li Zhou. "A Novel Method to Calculate Frequency Control Word of Direct Digital Synthesizer." Advanced Materials Research 267 (June 2011): 433–37. http://dx.doi.org/10.4028/www.scientific.net/amr.267.433.

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When designing signal generator with adjustable frequency based on direct digital synthesis technology (DDS), it is very important to calculate the frequency control word. To address the shortcoming of large computation, low efficiency of frequency setting, more storage space occupied or significant cumulative errors of frequency setting when calculating frequency control word with traditional methods, a novel calculation way for frequency control word is researched in this paper. This new method does not need large computation and more space and simultaneously it can decrease the error greatl

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31

Frattini Fileti, Ana M., and Jaão A. F. Rocha Pereira. "A direct digital control experiment for graduate and undergraduate chemical engineering students." Computers & Chemical Engineering 24, no. 2-7 (2000): 1491–95. http://dx.doi.org/10.1016/s0098-1354(00)00541-x.

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32

Murran, Miguel A., and Homayoun Najjaran. "Direct current pulse train actuation to enhance droplet control in digital microfluidics." Applied Physics Letters 101, no. 14 (2012): 144102. http://dx.doi.org/10.1063/1.4756914.

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33

Sung, Raymond C. W., Jonathan R. Corney, David P. Towers, et al. "Direct writing of digital images onto 3D surfaces." Industrial Robot: An International Journal 33, no. 1 (2006): 27–36. http://dx.doi.org/10.1108/01439910610700702.

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34

Li, Qiang, David Zhang, and Ibrahim Kucukkoc. "Order acceptance and scheduling in direct digital manufacturing with additive manufacturing." IFAC-PapersOnLine 52, no. 13 (2019): 1016–21. http://dx.doi.org/10.1016/j.ifacol.2019.11.328.

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35

Prisyazhnyuk, Nikolay N. "Microprocessor System of Automatic Control with the Direct Digital Control for Asynchronous Two-phase Actuating Motor." Journal of Automation and Information Sciences 32, no. 4 (2000): 93–97. http://dx.doi.org/10.1615/jautomatinfscien.v32.i4.120.

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36

UDDIN, MOHAMMED RAFIQ, GAZI MAEEN -UR- RASHID, and MD SHAHIDUL ISLAM. "MICROCONTROLLER BASED LIGHT CONTROL." International Journal of Software Engineering and Knowledge Engineering 15, no. 02 (2005): 319–24. http://dx.doi.org/10.1142/s021819400500235x.

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A microcontroller-based control system is a direct outgrowth of the extensive advances in the Integrated Circuit design and microelectronic device processing technology. This has led to the development of new forms of technologies. This paper presents a technique of microcontroller based control system for controlling the lights of a room. Using the technique, according to the intensity of the sunlight in a room, the states of light of that room will change. Therefore we need to collect data or information from the environment using light sensors to control lights. The microcontroller collects

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37

KOBAYASHI, Kunio, Sanroku SATO, and Tetsuzi SATO. "A Study on Acceleration Waveform Control of an Electrohydraulic Servovibrator using Direct Digital Control (Linear-Model-Following-Control System)." JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry 35, no. 3 (1992): 438–45. http://dx.doi.org/10.1299/jsmec1988.35.438.

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38

Moanes, Mohamed, Hassan Youness, and Mahmoud Khaled. "Direct mapping of digital PID control algorithm to a custom FPGAbased MPSoC, the parallel digital PID (PDPID) controller." International Conference on Electrical Engineering 8, no. 8th (2012): 1–10. http://dx.doi.org/10.21608/iceeng.2012.30572.

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39

Markovic, N. S., O. Markovic, and E. S. Henderson. "The power of the biomarker for cervical cancer control." Journal of Clinical Oncology 24, no. 18_suppl (2006): 11001. http://dx.doi.org/10.1200/jco.2006.24.18_suppl.11001.

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11001 Background: At ASCO 2001, the Cervical Acid Phosphatase - Papanicolaou Test (CPT) was introduced as a biomarker-based technology as a potential in vitro diagnostic device. At ASCO 2004 and 2005, we reported results from clinical trials on 2,000 subject/specimens. In a setting of standard cervical cancer screening, the safety and effectiveness of CPT (MarkPap® Test) was compared with control Pap smear and LBP. The favorable results motivated us to expand this translational research in areas where this biomarker is crucial: self-sampling and digital evaluation. We report a pilot study desi

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40

Capuano, A., M. Dell'Isola, N. Massarotti, and L. Vanoli. "A metrological analysis of a (Direct Digital Control) DDC-based air conditioning system." Energy and Buildings 29, no. 2 (1999): 155–66. http://dx.doi.org/10.1016/s0378-7788(98)00042-5.

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41

Jia, Zhao-Min, Xu-Hai Yang, Bao-Qi Sun, Xiao-Ping Zhou, Bo Xiang, and Xin-Yu Dou. "Direct Digital Frequency Control Based on the Phase Step Change Characteristic between Signals." Chinese Physics Letters 34, no. 9 (2017): 090601. http://dx.doi.org/10.1088/0256-307x/34/9/090601.

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42

YOUNG, PETER, M. A. BEHZADI, C. L. WANG, and ARUN CHOTAI. "Direct digital and adaptive control by input-output state variable feedback pole assignment." International Journal of Control 46, no. 6 (1987): 1867–81. http://dx.doi.org/10.1080/00207178708934021.

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43

R. N, Ponnalagu, Boby George, and Jagadeesh Kumar V. "Dual Slope Direct Digital Converter for Bridge Connected Resistive Sensors." International Journal on Smart Sensing and Intelligent Systems 7, no. 5 (2020): 1–5. http://dx.doi.org/10.21307/ijssis-2019-070.

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44

Kesoulis, M., D. Soudris, C. Koukourlis, and A. Thanailakis. "Systematic methodology for designing low power direct digital frequency synthesisers." IET Circuits, Devices & Systems 1, no. 4 (2007): 293. http://dx.doi.org/10.1049/iet-cds:20060029.

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45

Li, Xian Feng, Xiao Peng Wang, Xin Da Qi, Yan Wang, and Ping Yu. "LABTM Control System Based on FPGA." Applied Mechanics and Materials 300-301 (February 2013): 1604–9. http://dx.doi.org/10.4028/www.scientific.net/amm.300-301.1604.

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This paper presents the digital PI control method for design and simulation of a high precision limited angle brushless torque motor control system in Field Programmable Gate Array device (FPGA). The direct drive structures which are widely applied in many servo control fields. Matlab Xilinx System Generator® toolbox based on Fixed-Point Arithmetic is used to design the digital PI controller using DSP architecture, plot the responses of the control system and generate the VHDL source code. The control system model consists of a digital PI, a real LABTM, and a real absolute Inductosyn, encoder

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46

Singh, Bhoopendra, Shailendra Jain, and Sanjeet Dwivedi. "Direct Torque Control Induction Motor Drive with Improved Flux Response." Advances in Power Electronics 2012 (September 10, 2012): 1–11. http://dx.doi.org/10.1155/2012/764038.

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Accurate flux estimation and control of stator flux by the flux control loop is the determining factor in effective implementation of DTC algorithm. In this paper a comparison of voltage-model-based flux estimation techniques for flux response improvement is carried out. The effectiveness of these methods is judged on the basis of Root Mean Square Flux Error (RMSFE), Total Harmonic Distortion (THD) of stator current, and dynamic flux response. The theoretical aspects of these methods are discussed and a comparative analysis is provided with emphasis on digital signal processor (DSP) based cont

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47

Zhu, Fa Ming, and Sheng Li. "Application of Direct Actuated Digital Servo Valve in Electrohydraulic Static Loading System." Applied Mechanics and Materials 130-134 (October 2011): 4098–101. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.4098.

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Structure static testing is an important means to study the static characteristic of complex engineering structure. Electrohydraulic stactic loading system is the singnificant equipment of the testing. With its function of transfering low-power electrical singal to large-power hydraulic output quickly and precisely, the servo valve plays a key role in an electrohydraulic servo control system and dominates to a large extent the performance of the whole control system. Conventional electrohydraulic servo or proportional control is subject to the nonlinearites of their electro-mechanical interfac

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48

Poulin, Kevin C., and Rimas Vaicaitis. "Vibrations of Stiffened Composite Panels With Smart Materials." Journal of Vibration and Acoustics 126, no. 3 (2004): 370–79. http://dx.doi.org/10.1115/1.1760566.

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A numerical study of the use of electrorheological (ER) fluids and piezoelectric (PZT) actuators to control random vibrations of stiffened composite panels is presented. Active control of stiffness and damping is provided by the ER fluids and direct feedback control is provided by the PZT’s. New forms of transfer matrices are developed to include the effects of these smart materials. The modal equations of an equivalent uniform panel are converted into state-space form and digital stochastic feedback control is implemented. PZT direct feedback control is compared with digital stochastic feedba

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49

Abbas, Najimaldi M. "Squirrel cage induction motor predictive direct torque control based on multi-step delay compensation." International Journal of Applied Power Engineering (IJAPE) 10, no. 3 (2021): 244. http://dx.doi.org/10.11591/ijape.v10.i3.pp244-252.

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The squirrel cage induction motor direct torque control main problems due to torque and large stator flux pulsation. In this an improved model predictive direct torque control algorithm considering multi-step delay compensation is proposed. At each sampling moment, predict the stator flux linkage and torque at the next moment under each voltage vector. The optimal voltage vector deviation from the stator flux linkage reference value and torque reference value are selected as the minimum objective function. Aiming at the problem of one-shot delay in digital control systems, a multi-step predict

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50

Li, Yuesong. "Steady-state modelling and performance of a rotary direct drive digital valve." Measurement and Control 53, no. 3-4 (2020): 311–19. http://dx.doi.org/10.1177/0020294019866852.

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A rotary direct drive digital valve driven by a stepper motor was proposed. By analysing its working principle, the steady-state mathematical model reflecting the relationship between the pressure, the flow and the angular displacement was deduced. Based on this mathematical model, the models of the null valve coefficients, the zero leakage flow and the steady-state flow torque were given. The simulation shows that the relationship between the pressure and the flow of the rotary valve is nonlinear; however, under a constant load pressure, the flow characteristics and the steady-state flow torq

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