Relevant bibliographies by topics / Control stick

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Control stick'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Control stick"

1

Jang, Min Gyu, Chul Hee Lee, and Seung Bok Choi. "Precision Motion Control of a Smart Structure Using an Enhanced Stick-Slip Model." Advances in Science and Technology 56 (September 2008): 98–103. http://dx.doi.org/10.4028/www.scientific.net/ast.56.98.

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In this paper, a smart structure for the micro position control is proposed using the piezo stack actuator. The smart structure is comprised with PZT based stack actuator, mechanical displacement amplifier and positioning devices. Based on the bridge-type flexural hinge mechanism, a displacement amplifier is designed and integrated with a piezo stack actuator to produce a desirable positioning stroke of the device. In order to achieve the high precision control performance in a positioning device, a stick-slip phenomenon should be suppressed in contacting surfaces of the device, which is generally indispensable in the mechanically connected systems and particularly obvious for the micro-scale system. Therefore, the stick-slip model is enhanced by theoretically calculating the static friction based on the statistical rough surface contact model. Then, a PID feedback control algorithm with the developed stick-slip model is formulated for achieving accurate positioning of the device. Using the proposed smart structure, simulations of precise position control under the representative operating condition of positioning are conducted to demonstrate the stick-slip suppressing and micro positioning performance.
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Endlein, T., and W. Federle. "To stick and not getting stuck — detachment control in ants." Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 146, no. 4 (April 2007): S121—S122. http://dx.doi.org/10.1016/j.cbpa.2007.01.222.

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Shi, Yunlai, Chengshu Lou, and Jun Zhang. "Investigation on a Linear Piezoelectric Actuator Based on Stick-Slip/Scan Excitation." Actuators 10, no. 2 (February 20, 2021): 39. http://dx.doi.org/10.3390/act10020039.

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To perform a high resolution and long stroke application in optical precision instruments, a linear piezoelectric actuator operated in stick-slip/scan modes for driving a linear motion table is presented. The proposed piezoelectric actuator is a piezoelectric composite structure, which includes a metal elastomer, a piezoelectric stack, and a frictional ball. The purpose of this paper is to describe the operation principle, design, and the running test and resolution test of the linear motion table driven by the proposed piezoelectric actuator. The notable feature is the flexible hinges of the actuator, including composite hinge, pre-pressure adjustment flexible hinge, and transmission flexible hinge, which are designed for decoupling the motion in the action direction of the piezoelectric stack and the direction in which the pre-pressure is applied. A prototype has been fabricated and two operation modes of the piezoelectric actuator, stick-slip and scan mode, were utilized to test the driving characteristics of the linear motion table. Experimental results show that the finest step resolutions in stick-slip mode and scan mode achieved 12 nm and 4 nm, respectively.
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Yang, Tingsong, Jiayang Liu, Xinyi Ren, Yingwei Wang, and Fengshan Du. "Research on roll profile electromagnetic control ability in optimal electromagnetic stick parameter." Metallurgical Research & Technology 118, no. 3 (2021): 305. http://dx.doi.org/10.1051/metal/2021031.

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Roll profile electromagnetic control technology (RPECT) is a new strip flatness control technology. As the control element, electromagnetic sticks have a great effect on the control ability of RPECT. To improve control ability and extend service life, effective control ratio of electromagnetic stick is presented in this paper. The ratio is designed based on the structure character of electromagnetic stick, and can be used to evaluate the key parameter of electromagnetic stick. Based on the coupled FEM, the heat flux density of the roll inner hole and the temperature distribution of electromagnetic stick are analyzed for different effective control ratios; the average contact pressure between electromagnetic stick and electromagnetic control roll is studied to evaluate the change of force roll profile; the state of roll profile and the stress state of the roll are researched to analyze the comprehensive control ability. Through the verification on the roll profile electromagnetic control experimental platform, the reasonable selection range of effective control ratio, which can be used to expand the roll profile axial affected area, is from 0.5 to 0.583. In order to increase the roll crown, the selection of ηd needs to consider the current density and the optimal selection range of effective control ratio.
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Dupont, P. E. "Avoiding stick-slip through PD control." IEEE Transactions on Automatic Control 39, no. 5 (May 1994): 1094–97. http://dx.doi.org/10.1109/9.284901.

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Reeves, N. Peter, Pramod Pathak, John M. Popovich, and Vilok Vijayanagar. "Limits in motor control bandwidth during stick balancing." Journal of Neurophysiology 109, no. 10 (May 15, 2013): 2523–27. http://dx.doi.org/10.1152/jn.00429.2012.

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Why can we balance a yardstick but not a pencil on the tip of our finger? As with other physical systems, human motor control has constraints, referred to as bandwidth, which restricts the range of frequency over which the system can operate within some tolerated level of error. To investigate control bandwidth, the natural frequency of a stick used during a stick-balancing task was modified by adjusting the height of a mass attached to the stick. The ability to successfully balance the stick with the mass positioned at four different heights was determined. In addition, electromyographic signals from forearm and trunk muscles were recorded during the trials. We hypothesized that 1) the probability of successfully balancing would decrease as mass height decreased; and 2) the level of muscle activation in both agonist and antagonist would increase as the natural frequency of the stick increased. Results showed that as the mass height decreased the probability of successfully balancing the stick decreased. Changes in the probability of success with respect to mass height showed a threshold effect, suggesting that limits in human control bandwidth were approached at the lowest mass height. Also, the level of muscle activation in both the agonist and antagonist of the forearm and trunk increased linearly as the natural frequency of the stick increased. These changes in muscle activation suggest that the central nervous system adapts muscle activation to task dynamics, possibly to improve control bandwidth.
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Farida, Ida, and Komala Komala. "MENGEMBANGKAN KEMAMPUAN BERPIKIR SIMBOLIK PADA ANAK USIA DINI MELALUI MEDIA PEMBELAJARAN STIK BERGAMBAR." CERIA (Cerdas Energik Responsif Inovatif Adaptif) 2, no. 6 (September 6, 2019): 359. http://dx.doi.org/10.22460/ceria.v2i6.p359-362.

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The ability to think symbolically is the ability to formulate consepts learned by children for the provision of life in the future. The pictorial ice cream sticks media in learning activities can be used in developing childrens symbolic thinking skills. This research aims to find out the simbolic thinking ability of children. This study aims to determine the development of symbolic thinking abilities through pictorial stick media. The media of ice cream stick was chosen to be the solution of the problems that exist in, because these ice cream sticks have not been widely used as a mediun for the development of symbolic thinking skills, besides ice cream sticks are also easily available and familiar to chldren, so it expected through stick media illustrated ice cream will fasilitate researchers in developing symbolic thinking skills in children. This study uses an experimental method where the sampel in this study amounted to 26 children. Data processing using SPSS 22.0. The average gain test results between the experimental group and the control group were 7,07 for the experimental group and 6,38 for the control group. Thus it shows that pictorial ice cream sticks are able to develop symbolic numeracy skills at SPS Permata Bunda. With the application of pictorial ice cream stick learning media can increase childrens learning interest, students can be directly involved in learning can be more meaningful and meaningful for children.Kemampuan berpikir simbolik merupakan kemampuan dalam merumuskan konsep-konsep yang dipelajari anak guna bekal dikehidupan yang akan datang. Media stik eskrim bergambar dalam kegiatan pembelajaran dapat digunakan dalam mengembangkan kemampuan berfikir simbolik anak. Penelitian ini bertujuan untuk mengetahui kemampuan berpikir simbolik anak. Penelitian ini bertujuan untuk mengetahui pengembangan kemampuan berpikir simbolik melalui media stik bergambar. Media stik es krim bergambar dipilih untuk menjadi solusi dari permasalahan yang ada di SPS Permata Bunda, karena stik eskrim ini belum banyak digunakan sebagai media pengembangan kemampuan berpikir simbolik, selain itu stik eskrim juga mudah didapatkan dan tidak asing lagi bagi anak-anak, sehingga diharapkan melalui media stik es krim bergambar akan memudahkan peneliti dalam mengembangkan kemampuan berpikir simbolik pada anak. Penelitian ini meggunakan metode eksperimen dimana sampel terbagi menjadi kelompok eksperimen dan kontrol, sampel dalam penelitian ini berjumlah 26 orang anak. Pengolahan data menggunakan SPSS Versi 22.0. Hasil dari penelitian ini hasil uji postest dengan menggunakan SPSS 22.0. Hasil uji gain rata-rata antara kelompok eksperimen dan kelompok kontrol yaitu 7.07 untuk kelompok eksperimen dan 6.38 untuk kelompok kontrol. Dengan demikian menunjukkan bahwa stik es krim bergambar mampu mengembangkan kemampuan berpikir simbolik di SPS Permata Bunda. Dengan penerapan media pembelajaran stik bergambar ini dapat meningkatkan minat belajar anak, peserta didikpun dapat terlibat langsung dalam kegiatan pembelajaran, sehingga pembelajaran dapat lebih berarti dan bermakna bagi anak.
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Nam, Yoonsu, and Sung Kyung Hong. "Active stick control using frictional torque compensation." Sensors and Actuators A: Physical 117, no. 2 (January 2005): 194–202. http://dx.doi.org/10.1016/j.sna.2004.06.018.

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Taylor, Hugh R., and Heathcote R. Wright. "Dip-stick test for trachoma control programmes." Lancet 367, no. 9522 (May 2006): 1553–54. http://dx.doi.org/10.1016/s0140-6736(06)68668-6.

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Metalis, S. A., R. N. Pennella, and S. L. Rodriquez. "Stick Control Modulations Index Pilot Mental Workload." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 39, no. 14 (October 1995): 952. http://dx.doi.org/10.1177/154193129503901444.

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Dissertations / Theses on the topic "Control stick"

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Gräsberg, Pontus, and Bill Lavebratt. "Reaction Wheel Stabilized Stick." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264481.

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Control theory can be used to make an unstable system stable. This thesis seeks to do this, where the system is a two DOF inverted pendulum with reaction wheels for stabilisation. The thesis also seeks to answer what is most important for making it stabilize for a longer period of time. It was decided that a state space controller was to be used with various sensors measuring the states. To be able to design a functioning demonstrator, a mathematical model of the system dynamics was developed. In the end the demonstrator proved to function as desired, being able to balance indefinitely. It was found that it is absolutely necessary to either give the controller a perfect set point or to implement an automatic set point.
Reglerteknik kan användas för att göra ostabila system stabila. Målet med detta projekt var att göra detta med ett system i form av en inverterad pendel med två frihetsgrader som balanseras med hjälp av två svänghjul. Projektet söker att besvara frågan om vad som är de viktigaste faktorerna för att få systemet att vara stabilt över en längre tid. En tillståndsåterkoppling användes som regulator vilket innebar att flera olika sensorer behövdes för att mäta de olika tillstånden. För att kunna konstruera en fungerande prototyp utvecklades en matematisk modell av systemet vilken användes för simulering av systemet. Till slut konstruerades en fungerade prototyp som till synes kunde balansera över oöverskådlig tid. En av de faktorer som visade sig påverka huruvida systemet uppnår stabilitet över längre tid var hur bra referenspunkt som gavs till regulatorn, det vill säga det tillstånd som regulatorn reglerar systemet mot. Det visade sig vara möjligt att implementera en självjusterande referenspunkt som gjorde systemet stabilt över tid.
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Darby, A. P. "Active control of flexible structures using inertial stick-slip actuators." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598276.

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Future space mission proposals include many large optical structures which must be capable of maintaining high shape accuracy. Typically, dimensional stability of the order of microns must be maintained over distances of tens of meters. In the past, this stability has been achieved by the use of organic composite materials, such as carbon fibre reinforced plastic (CFRP), which are thermally unresponsive, lightweight and stiff. These materials, however, are both expensive and subject to unknown changes in their properties during their space exposure lifetime. Hence, active control allows the use of more conventional engineering materials and the construction of larger and more ambitious structures. In a typical application the two main effects to be controlled are vibrations, due mainly to on-board disturbances, such as torque wheels, and quasi-static disturbances, caused by effects such as temperature gradients or initial lack-of-fit of structural members. This dissertation describes a system which provides 6DOF alignment correction of a payload mounted at the tip of a flexible structure, subject to dynamic and quasi-static disturbances, using a Stewart platform arrangement. The six legs of the platform are formed by a new type of actuator. The actuator uses a stick-slip motion, driven by an inertial mass. The dynamics of the actuator are described and its ability to control both dynamic and quasi-static disturbances is examined, experimentally. The inherently non-linear input-output response of the actuator is quantified and modelled. The flexible structure, used for experimental tests, consists of a pantographic mast. The modal parameters are identified through the use of a numerical model verified by modal tests that have been carried out on the actual structure. Important joint effects are examined and modelled. The modal model is combined with a rigid body model of the Stewart platform to produce a non-linear analytical model of the interaction between the structure and the actuators. This is used to estimate the performance and examine the stability of the closed-loop controlled system.
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Graham, Paul. "The non-stick approach to the control of marine fouling." Thesis, University of Portsmouth, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343379.

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Asimakopoulos, Spilios. "The control of salivary glands in the stick insect, carausius morosus." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0002/MQ40880.pdf.

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Arcieri, Michael Angel Santos. "Controle de vibrações mecânicas tipo "stick slip" em colunas de perfuração." Pós-Graduação em Engenharia Elétrica, 2013. https://ri.ufs.br/handle/riufs/5011.

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Mechanical vibrations are inevitable in drilling operations. Torsional stick-slip vibrations are vibrations that occur in drilling columns, which are produced by periodic variations of torque and characterized by large fluctuations in the speed of the drill bit. These vibrations are dangerous, primarily by the cyclical characteristic of the phenomenon that by the amplitude of the same, which can cause fatigue of the pipe, failures in the components of the drill string, deformations in the walls of the well, excessive wear of the drill, low rate of penetration, and collapse of the drilling process. The frequency of these unwanted oscillations can be reduced by the application of automatic control techniques. The objective of this study is to evaluate through numerical simulations, the application of conventional control techniques, such as proportional-integral control (PI), and nonlinear, as the sliding mode control (SMC) and the input-output linearization control (IOLC), to eliminate the presence of stick-slip oscillation in drilling columns. The controllers are designed primarily to maintain a constant speed of rotation system, by manipulating engine torque, thereby inferentially control the speed of the drill, thus providing optimum operation conditions, beyond preserving system stability. Results of simulations using drill string torsional models of two degrees of freedom (2-DOF) and four degrees of freedom (4-DOF) show the performance of the proposed control systems, which are analyzed and qualitatively compared.
Vibrações mecânicas são inevitáveis nas operações de perfuração. Vibrações torcionais stick-slip são vibrações que ocorrem em colunas de perfuração, as quais são produzidas pelas variações periódicas de torque e caracterizadas por grandes oscilações da velocidade da broca. Estas vibrações são prejudiciais, mais pela característica cíclica do fenômeno que pela amplitude da mesma, podendo originar fadiga da tubulação, falhas nos componentes da coluna de perfuração, deformações nas paredes do poço, desgaste excessivo da broca, baixa taxa de penetração e, inclusive, colapso do processo de perfuração. A frequência destas oscilações indesejadas pode ser reduzida pela aplicação de técnicas de controle automático. O objetivo deste trabalho é avaliar, mediante simulações numéricas, a aplicação de técnicas de controle convencional, como o controle proporcional-integral (PI), e não linear, como o controle por modos deslizantes (SMC) e o controle por linearização entrada-saída (IOLC) para eliminar a presença de oscilações stick-slip em colunas de perfuração. Os controladores são desenvolvidos principalmente para manter constante a velocidade do sistema de rotação, mediante a manipulação do torque do motor, para assim controlar inferencialmente a velocidade da broca, fornecendo desta maneira condições ótimas de operação, além de preservar a estabilidade do sistema. Resultados das simulações, usando modelos torcionais de uma coluna de perfuração de dois graus de liberdade (2-DOF) e de quatro graus de liberdade (4-DOF), mostram o desempenho dos sistemas de controle propostos, os quais são analisados e comparados qualitativamente.
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Silva, James Emanuel. "PNIPAM hydrogel micro/nanostructures for bulk fluid and droplet control." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/54252.

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Poly(N-isopropylacrylamide) (PNIPAM) belongs to a class of stimuli-responsive materials known as “smart” polymers. When cast in the form of a hydrogel, PNIPAM’s lower critical solution temperature (LCST) of 32°C serves as a threshold for volumetric change. For solution temperatures below LCST, PNIPAM hydrogels exist as swollen, hydrophilic networks of polymer and water, spontaneously expelling the bound water molecules to shrink (and become increasingly hydrophobic) as temperature increases beyond LCST. This thesis centers on PNIPAM hydrogel layers grafted along the inner diameter of glass capillaries in order to form a temperature-responsive gating mechanism that spontaneously seals for solution temperatures below LCST. Surprisingly, very thin layers (10-20µm) of PNIPAM have dramatic effects on bulk fluid flow through the capillary due to complex interactions at the swelling interface. Specifically, for the case of capillary pressure driven flow, the swelling PNIPAM interface gives rise to "stick-and-slip" motion for bulk flow. Experiments explore the extent of this phenomenon, while a theoretical framework is proposed to model how the evolving gel interface pins the contact line. Additionally, an exploratory segment of this work examines the ways in which PNIPAM hydrogel nanoarrays can be synthesized via scalable template methods. Nanostructured PNIPAM films exhibit dramatic changes in surface properties with temperature, characterized by very low contact angles (~10°) below LCST, and very high ones (~160°) above LCST. Results for several methods are presented with lessons learned to guide future development of surfaces with temperature-responsive wetting properties.
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Rosano-Matchain, Hugo Leonardo. "Decentralised compliant control for hexapod robots : a stick insect based walking model." Thesis, University of Edinburgh, 2007. http://hdl.handle.net/1842/2574.

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This thesis aims to transfer knowledge from insect biology into a hexapod walking robot. The similarity of the robot model to the biological target allows the testing of hypotheses regarding control and behavioural strategies in the insect. Therefore, this thesis supports biorobotic research by demonstrating that robotic implementations are improved by using biological strategies and these models can be used to understand biological systems. Specifically, this thesis addresses two central problems in hexapod walking control: the single leg control mechanism and its control variables; and the different roles of the front, middle and hind legs that allow a decentralised architecture to co-ordinate complex behavioural tasks. To investigate these problems, behavioural studies on insect curve walking were combined with quantitative simulations. Behavioural experiments were designed to explore the control of turns of freely walking stick insects, Carausius morosus, toward a visual target. A program for insect tracking and kinematic analysis of observed motion was developed. The results demonstrate that the front legs are responsible for most of the body trajectory. Nonetheless, to replicate insect walking behaviour it is necessary for all legs to contribute with specific roles. Additionally, statistics on leg stepping show that middle and hind legs continuously influence each other. This cannot be explained by previous models that heavily depend on positive feedback controllers. After careful analysis, it was found that the hind legs could actively rotate the body while the middle legs move to the inside of the curve, tangentially to the body axis. The single leg controller is known to be independent from other legs but still capable of mechanical synchronisation. To explain this behaviour positive feedback controllers have been proposed. This mechanism works for the closed kinematic chain problem, but has complications when implemented in a dynamic model. Furthermore, neurophysiological data indicate that legs always respond to disturbances as a negative feedback controller. Additional experimental data presented herein indicates that legs continuously oppose forces created by other legs. This thesis proposes a model that has a velocity positive feedback control modulated via a subordination variable in cascade with a position negative feedback mechanism as the core controller. This allows legs to oppose external and internal forces without compromising inter-leg collaboration for walking. The single leg controller is implemented using a distributed artificial neural network. This network was trained with a wider range of movement to that so far found in the simulation model. The controller implemented with a plausible biological.
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Bromfield, Michael. "Criteria for acceptable stick force gradients of a light aeroplane." Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/6861.

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During the period 1980 to 2008 there were 359 fatal accidents involving UK registered light aeroplanes of which 36% occurred in visual meteorological conditions. In all, 216 lives were lost with accidents being attributed to the pilot 'failing to maintain proper control resulting in a stall or spin'. Dissimilar fatal stallrelated accident rates are evident for aeroplane makes & models of similar design. During the course of this programme of research, flight testing of two similar aeroplane models using a case study method showed marked differences in the variation of stick force with airspeed or stick force gradient in all flight conditions. This suggested that 'control feel' was a contributory factor towards the pilot’s failure to maintain proper control. Current certification standards for light aeroplanes rely upon the subjective assessment of stick force gradients by test pilots, requiring that substantial changes in airspeed are accompanied by clearly perceptible changes in stick force with no specified minimum gradient. This programme of research has been carried out to determine acceptable criteria for stick force gradients of a light aeroplane in all flight conditions. Criteria has been determined from flight tests of aeroplanes with different in-service safety records and subjective pilot workload assessment using simulated flying tasks with different stick force gradients performed by twenty GA pilots. Simulation tests indicated that pilot mental demand increased significantly (p > 0.05) when stick force gradient was reduced to ‘zero’, representing an aeroplane with neutral longitudinal static stability. A predictive model has been developed to estimate stick force gradients for a light aeroplane in any flight condition under quasi-static, longitudinal, non-manoeuvring flight and 1-g loading conditions. The model builds upon previous published work limited to cruising flight, and enables the estimation of stick forces and gradients due to high lift devices in the climb and landing condition by consideration of the combined effects of wing loading, CG, elevator gearing, flaps and elevator trim setting. Implemented using MATLAB, the model has been validated by comparing with flight test results for the case study aeroplanes and showed mean differences of ±0.025 daN/kt. The predictive model should be used in preliminary aeroplane design to assess tendencies towards neutral stability in high workload, safety critical flight conditions such as the take-off and landing. In addition, the model should be used to analyse existing aeroplanes with comparatively low or neutral stick force gradients in safety critical flight phases and to predict the effects of changing CG and/or flap limits to increase stick force gradient and improve control feel. The combined results of these studies suggest that a minimum acceptable stick force gradient for a non-aerobatic light aeroplane in all flight conditions should be nonzero and between 0.10~0.13 daN/kt. A stable and predictable stick force variation with airspeed will ensure that any substantial deviation from trimmed airspeed is accompanied by a stick force change clearly perceptible to the pilot and also provide additional warning of the proximity to the stall. The use of specific criteria to complement qualitative test pilot opinion, will assist in confirming compliance and provide consistency with current standards for sailplanes/powered sailplanes and large commercial aeroplanes, both of which already have defined minimum acceptable gradients.
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Busse, Leif [Verfasser]. "Investigation, prediction and control of rubber friction and stick-slip : experiment, simulation, application / Leif Busse." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2013. http://d-nb.info/1032719249/34.

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Johannessen, Morten Krøtøy, and Torgeir Myrvold. "Stick-Slip Prevention of Drill Strings Using Nonlinear Model Reduction and Nonlinear Model Predictive Control." Thesis, Norwegian University of Science and Technology, Department of Engineering Cybernetics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9112.

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The main focus of this thesis is aspects in the development of a system for prevention of stick-slip oscillations in drill strings that are used for drilling oil wells. Stick-slip is mainly caused by elasticity of the drill string and changing frictional forces at the bit; static frictional forces are higher than the kinetic frictional forces which make the bit act in a manner where it sticks and then slips, called stick-slip. Stick-slip leads to excessive bit wear, premature tool failures and a poor rate of penetration. A model predictive controller (MPC) should be a suitable remedy for this problem; MPC has gained great success in constrained control problems where tight control is needed. Friction is a highly nonlinear phenomenon and for that reason is it obvious that a nonlinear model is preferred to be used in the MPC to get prime control. Obviously it is of great importance that the internal model used in the MPC is of a certain quality, and as National Oilwell Varco (NOV) has developed a nonlinear drill string model in Simulink, it will be useful to check over this model. This model was therefore verified with a code-to-code comparison and validated using logging data provided from NOV. As the model describing the dynamics of the drill string is somewhat large, a nonlinear model reduction is needed due to the computational complexity of solving a nonlinear model predictive control problem. This nonlinear model reduction is based on the technique of balancing the empirical Gramians, a method that has proven to be successful for a variety of systems. A nonlinear drill string model has been reduced and implemented to a nonlinear model predictive controller (NMPC) and simulated for different scenarios; all proven that NMPC is able to cope with the stick-slip problem. Comparisons have been made with a linear MPC and an existing stick-slip prevention system, SoftSpeed, developed by National Oilwell Varco.

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Books on the topic "Control stick"

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Graham, Paul A. D. The non-stick approach to the control of marine fouling. Portsmouth: University of Portsmouth, School of Pharmacy and Biomedical Sciences, 2000.

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Asimakopoulos, Spilios. The control of salivary glands in the stick insect, carausius morosus. Ottawa: National Library of Canada, 1998.

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Aiken, Edwin W. Effects of side-stick controllers on rotorcraft handling qualities for terrain flight. Moffett Field, CA: National Aeronautics and Space Administration, Ames Research Center, 1985.

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Lev, Raphael, and Espeland Pamela 1951-, eds. Stick up for yourself!: Every kid's guide to personal power and positive self-esteem. Minneapolis, MN: Free Spirit Pub., 1999.

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1951-, Espeland Pamela, and Raphael Lev, eds. Stick up for yourself!: Every kid's guide to personal power and positive self-esteem. Minneapolis, MN: Free Spirit Pub., 1990.

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Ismail. Stock control system. Manchester: University of Manchester, Department of Computer Science, 1996.

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Anderson, Sarah. Online stock control system. Oxford: Oxford Brookes University, 2002.

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plc, Kewill Systems. Micross stock control: Users guide. Walton-on-Thames: Kewill Systems, 1987.

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Lu, Han Viet. An automated stock control system. Manchester: University of Manchester, Departmentof Computer Science, 1995.

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Crampsie, B. L. J. Stock control and its cost effectiveness. Oxford: Oxford Brookes University, 1995.

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Book chapters on the topic "Control stick"

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Armstrong-Hélouvry, Brian. "Analysis of Stick-Slip." In Control of Machines with Friction, 95–124. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-3972-8_7.

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Bhuvana, Korrapati, Bodavula Krishna Bhargavi, and S. Vigneshwari. "A Safety Stick for Elders." In Advances in Systems, Control and Automations, 513–20. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8685-9_53.

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Saldivar Márquez, Martha Belem, Islam Boussaada, Hugues Mounier, and Silviu-Iulian Niculescu. "Stick-Slip Control: Lyapunov-Based Approach." In Analysis and Control of Oilwell Drilling Vibrations, 179–98. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-15747-4_11.

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Rakotondrabe, Micky, Yassine Haddab, and Philippe Lutz. "Modeling and Control of Stick-slip Micropositioning Devices." In Micro, Nanosystems and Systems on Chips, 1–30. Hoboken, NJ USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118557815.ch1.

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Leine, R. I., and D. H. van Campen. "Stick-Slip Whirl Interaction in Drillstring Dynamics." In IUTAM Symposium on Chaotic Dynamics and Control of Systems and Processes in Mechanics, 287–96. Dordrecht: Springer Netherlands, 2005. http://dx.doi.org/10.1007/1-4020-3268-4_27.

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Zhang, Yunzhi, Xianmin Zhang, and Qinghua Lu. "The Vibration Control of Stick-Slip Actuated Precision Positioning Structure." In Lecture Notes in Electrical Engineering, 1057–67. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2875-5_86.

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Rosano, Hugo, and Barbara Webb. "The Control of Turning in Real and Simulated Stick Insects." In From Animals to Animats 9, 150–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11840541_13.

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Doghmane, Mohamed Z., Abdelmoumen Bacetti, and Madjid Kidouche. "Stick-Slip Vibrations Control Strategy Design for Smart Rotary Drilling Systems." In Artificial Intelligence and Renewables Towards an Energy Transition, 197–209. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-63846-7_20.

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Watanabe, Kazumi. "Wave Radiation from a Stick-Slip-Like Source Motion (SH-Wave)." In Advanced Dynamics and Model-Based Control of Structures and Machines, 205–13. Vienna: Springer Vienna, 2011. http://dx.doi.org/10.1007/978-3-7091-0797-3_24.

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Balasubramaniam, Ramesh. "On the Control of Unstable Objects: The Dynamics of Human Stick Balancing." In Advances in Experimental Medicine and Biology, 149–68. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-5465-6_8.

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Conference papers on the topic "Control stick"

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Leong, Yoke Peng, and John C. Doyle. "Understanding robust control theory via stick balancing." In 2016 IEEE 55th Conference on Decision and Control (CDC). IEEE, 2016. http://dx.doi.org/10.1109/cdc.2016.7798480.

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Bencsik, Laszlo, and Tamas Insperger. "Periodic Control in a Stick Balancing Problem." In ASME 2019 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/detc2019-97979.

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Abstract Understanding the human balancing is a fundamental question. Investigation of simple tasks can help in this challenging problem. In order to describe the nature of the underlying control mechanism, first of all, the balancing force has to be determined. As a second step one can identify the behaviour of the controller. There are two main problems in the model of the whole control process of balancing, time-delay is unknown and the exact mathematical definition of the control goal is also not known. The explanation for this latter issue the classical inverted pendulum model has 2DoF but only one control forces exists, thus it can be handled as a typical underactuated mechanical system. In under-actuated systems the task of inverse dynamics is not well defined. Some degrees-of-freedom cannot directly be controlled, and the corresponding generalized coordinates depend on the system dynamics only. In this study we model the control mechanism as a time periodically (i.e. clock-driven) switched controller. We investigate the stability properties of the closed-loop system. We show a periodically switched controlled which can be a possible model of human balancing.
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Dong, Yiqun, Lidong Zhang, Yijun Zhang, and Jianliang Ai. "Attitude Protection Control for Side Stick-operated Aircraft." In AIAA Infotech@Aerospace (I@A) Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-5043.

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Liyu Cao and H. M. Schwartz. "Stick-slip friction compensation for PID position control." In Proceedings of 2000 American Control Conference (ACC 2000). IEEE, 2000. http://dx.doi.org/10.1109/acc.2000.876666.

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Nagy, Dalma J., László Bencsik, and Tamás Insperger. "Modelling Stick Balancing by Applying Switching-Type Control." In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22419.

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Abstract In today’s aging society special attention is devoted to the research of human balance control. Our research group focuses on understanding the control mechanism of the brain during balancing from an engineering point of view. The model of stick balancing is derived and the dynamical behaviour of the mechanical system is investigated numerically. The control force is modelled as a PD controller with predictor feedback without implementation uncertainty, which allows perfect delay compensation. However, the sensory dead zone of human perception is also accounted for in the model and thus, a delayed switching-type controller is applied. After deriving the mechanical model, numerical analysis is carried out in order to investigate the effect of time delay and the size of sensory dead zones.
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Durham, Wayne. "Control stick logic in high angle-of-attack maneuvering." In Guidance, Navigation, and Control Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1994. http://dx.doi.org/10.2514/6.1994-3683.

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Yoshihiko Takahashi and Hirofumi Takagi. "Joy stick operation speed of intelligent robotic wheelchair." In 2007 International Conference on Control, Automation and Systems. IEEE, 2007. http://dx.doi.org/10.1109/iccas.2007.4406832.

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Barhoumi, Toumadher, and Dongsuk Kum. "Automated Schematic Design of Power-Split Hybrid Vehicles With a Single Planetary Gear." In ASME 2014 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/dscc2014-6086.

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Most of the previous research in the field of power-split hybrid electric vehicles focused on the powertrain topology optimization. However, depicting a given or found topology in the form of schematic diagram, required for the advanced steps of vehicles’ design, has not yet been studied. In this paper, we propose a systematic approach to automatically generate all feasible stick diagrams for all twelve split-hybrid powertrain topologies with a single planetary gear (PG). The stick diagram is a simplified cartoon layout that schematically illustrates the connections, arrangements, and positions of the powertrain components. The proposed process is divided into three steps. First, we introduce the placement diagram, which specifies the position of the components with respect to the planetary gear. Secondly, for each placement diagrams, all positioning diagrams are generated where the relative location of each component is determined. The use of positioning diagrams guarantees dealing with all the possible arrangements. Lastly, the feasible stick diagrams are selected by filtering out infeasible ones from the entire pool of candidate stick diagrams using a set of feasibility rules. The proposed method is used for several topologies, such as Toyota Prius and GM Volt, and it is found that the patented stick diagrams are a subset of all the feasible stick diagrams. Therefore, one can systematically generate all the feasible stick diagrams for any given single PG powertrain topology using the proposed design methodology.
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Heck, B. S., and A. A. Ferri. "Analysis of stick-slip motion in Coulomb damped systems." In Proceedings of 16th American CONTROL Conference. IEEE, 1997. http://dx.doi.org/10.1109/acc.1997.609025.

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Harris, Matthew W., Behçet Açıkmeşe, and Eric van Oort. "LMI Based Control of Stick-Slip Oscillations in Drilling." In ASME 2014 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/dscc2014-6164.

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This paper investigates control of stick-slip oscillations in drilling from a linear matrix inequality perspective. Stick-slip oscillations include a period of no angular motion at the bit caused by a large static friction torque followed by a period of rapid angular motion at the bit caused by a build up of torque in the drilling pipe. Many of the model parameters are uncertain but belong to convex sets, and the friction torques are not easily modeled. The linear matrix inequality approach facilitates design of state feedback controllers in the presence of polytopic uncertainties and can be optimized to reject disturbance effects relative to outputs. Results indicate that the linear matrix inequality approach leads to a simple controller, successfully alleviates the stick-slip problem, and is robust to uncertainties.
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Reports on the topic "Control stick"

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Whitaker, C. N., and R. E. Zimmerman. Delethalized Cyclic Control Stick. Fort Belvoir, VA: Defense Technical Information Center, July 1986. http://dx.doi.org/10.21236/ada173931.

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Coldsnow, Matthew, Prospero Uybarreta, Dennis Rippy, Alan Driver, and Christopher Kirkland. Limited Investigation of Active Feel Control Stick System (Active Stick). Fort Belvoir, VA: Defense Technical Information Center, June 2009. http://dx.doi.org/10.21236/ada516721.

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Acosta-Henao, Miguel, Laura Alfaro, and Andrés Fernández. Sticky Capital Controls. Cambridge, MA: National Bureau of Economic Research, April 2020. http://dx.doi.org/10.3386/w26997.

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Chari, Anusha, Paige Ouimet, and Linda Tesar. Acquiring Control in Emerging Markets: Evidence from the Stock Market. Cambridge, MA: National Bureau of Economic Research, November 2004. http://dx.doi.org/10.3386/w10872.

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Aigner, John D., Katlin Mooneyham, Christopher McCullough, and Thomas Kuhar. Control of Brown Marmorated Stink Bug with Insecticide-Treated Window Screens. Blacksburg, VA: Virginia Cooperative Extension, January 2021. http://dx.doi.org/10.21061/ento-177np_ento-400np.

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Hubbard, R. Glenn, and Darius Palia. Benefits of Control, Managerial Ownership, and the Stock Returns of Acquiring Firms. Cambridge, MA: National Bureau of Economic Research, April 1995. http://dx.doi.org/10.3386/w5079.

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Wang, Wensheng. Advanced SOFC quality control and the role of manufacturing defects on stack reliability. Office of Scientific and Technical Information (OSTI), March 2018. http://dx.doi.org/10.2172/1430240.

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Aidun, Cyrus K. Improving paper machine efficiency through on-line control of stock delivery, headbox and forming hydrodynamics. Office of Scientific and Technical Information (OSTI), September 1999. http://dx.doi.org/10.2172/761133.

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Cyrus K. Aidun. Improving paper machine efficiency through on-line control of stock delivery, headbox and forming hydrodynamics. Quarterly report. Office of Scientific and Technical Information (OSTI), February 2000. http://dx.doi.org/10.2172/764760.

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Bebchuk, Lucian, Reinier Kraakman, and George Triantis. Stock Pyramids, Cross-Ownership, and the Dual Class Equity: The Creation and Agency Costs of Seperating Control from Cash Flow Rights. Cambridge, MA: National Bureau of Economic Research, February 1999. http://dx.doi.org/10.3386/w6951.

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