Journal articles: 'SERVOMOTER CONTROLLED'

1

Yan, Guishan, Zhenlin Jin, Tiangui Zhang, and Penghui Zhao. "Position Control Study on Pump-Controlled Servomotor for Steam Control Valve." Processes 9, no. 2 (January 25, 2021): 221. http://dx.doi.org/10.3390/pr9020221.

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In steam turbine control and actuation, the steam control valve plays a key role in operability and reliability. The electrohydraulic regulating system for the steam control valve, usually called the servomotor, needs to be reliable and high performing under nonlinear excitation interference in actual conditions. Currently, electrohydraulic servo valve control technology is widely used in servomotors. Although this technology has good control performance, it still has some technical defects, such as poor antipollution ability, low energy efficiency, large volume size, and limited installation space. Aiming at the abovementioned technical shortcomings of electrohydraulic servo valve control technology, a servomotor-pump-hydraulic cylinder volume control scheme is proposed in this paper, forming a pump-controlled servomotor for the steam control valve. By analyzing the working principle of the pump-controlled servomotor position control in the steam control valve, the mathematical model of a pump-controlled servomotor for the steam control valve is established. The sliding mode variable structure control strategy is proposed, and the variable structure control law is solved by constructing a switching function. To verify the performance of the proposed control method, experimental research was conducted. The research results show that the proposed sliding mode variable structure control strategy has a good control effect, which lays the theoretical and technical foundation for the engineering application and promotion of pump-controlled servomotors for steam control valves and helps the technical upgrade and product optimization of steam turbines.

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Gao, Xiao Ding, Zhao Ming Nie, Yuan Chao Li, and Jia Jia Wang. "The Multiple AC Servomotors’ Synchronous Operation Control System Based on DSP and FPGA." Advanced Materials Research 490-495 (March 2012): 1650–54. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.1650.

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The multi AC servomotor synchronous operation control system based on DSP+FPGA and a new intelligent PI controller have been designed. The intelligent PI controller can change the structure of controller and parameters dynamically according to the running status of the system, which improves the dynamic performance of the speed control system. In terms of the condition without loading, the experiments about four AC servomotors in different revolving speed have been implemented and The results of experiments show that the system can achieve the high precision control of the operation of multiple AC servomotors synchronously.

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Nichols, Charles. "The vBow: a virtual violin bow controller for mapping gesture to synthesis with haptic feedback." Organised Sound 7, no. 2 (August 2002): 215–20. http://dx.doi.org/10.1017/s135577180200211x.

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The vBow, a virtual violin bow musical controller, has been designed to provide the computer musician with most of the gestural freedom of a bow on a violin string. Four cable and servomotor systems allow for four degrees of freedom, including the lateral motion of a bow stroke across a string, the rotational motion of a bow crossing strings, the vertical motion of a bow approaching and pushing into a string, and the longitudinal motion of a bow travelling along the length of a string. Encoders, attached to the shaft of the servomotors, sense the gesture of the performer, through the rotation of the servomotor shafts, turned by the motion of the cables. The data from each encoder is mapped to a parameter in synthesis software of a bowed-string physical model. The software also sends control voltages to the servomotors, engaging them and the cables attached to them with a haptic feedback simulation of friction, vibration, detents and elasticity.

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Ma, Hong Wen, L. Q. Wang, D. L. Chen, X. W. Hao, and H. W. Luo. "Design of a Crab-Like Octopod Robot." Applied Mechanics and Materials 10-12 (December 2007): 263–66. http://dx.doi.org/10.4028/www.scientific.net/amm.10-12.263.

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A crab-like octopod robot is introduced in this paper. The body structure of the robot is simuliar with a real crab. Each leg has three jionts which are driven by servomotors. The control system is a distributed hierarchical system with a top layer as gait generator and a bottom layer as servomotor controller. The bottom layer has enght individual control units every of which can control three servomotors using PID control method. The sensor systerm is composed of force sensors mounted at the end of the leg and a inclinometer provides pitch and roll angles of the body.

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Peng, William Z., Hyunjong Song, Dariusz Czarkowski, and Joo H. Kim. "Switched electromechanical dynamics for transient phase control of brushed DC servomotor." Chaos: An Interdisciplinary Journal of Nonlinear Science 32, no. 12 (December 2022): 123119. http://dx.doi.org/10.1063/5.0101432.

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Robotic tasks often exceed the scope of steady-state or periodic behavior, which necessitates generally-applicable models of actuators intended to generate transient or aperiodic motion. However, existing electromechanical models of servomotors typically omit consideration of the switching power converter circuits required for directional, speed, or torque control. In this study, a multi-domain framework is established for switched electromechanical dynamics in servomotor systems for their analysis and control in general aperiodic tasks including transient phases. The switched electromechanical dynamics is derived from the individual models of the internal DC motor, gear train, and H-bridge circuit. The coupled models comprehensively integrate all possible distinct switching configurations of on-state, off-state, and dead time. A combination of cycle averaging with piecewise analytical solutions of the non-smooth dynamics is introduced to handle different temporal scales from high-frequency electrical to low-frequency mechanical variables. System parameters were estimated from experimental data using a dual-servomotor test platform. The model was validated for predictive accuracy against measured data in two distinct tasks—dynamic braking of a pendulum system and sinusoidal trajectory following. The model was also used to formulate the servomotor power consumption, which was implemented for optimal control demonstration and energy analysis. In particular, the servomotor power consumption model provided true optimality (minimization) when compared with the squared rotor torque and the positive rotor mechanical power that are commonly used as proxy models. While the focus of this work is on permanent-magnet, armature-controlled brushed DC servomotors, the approach is applicable to general electromechanical systems with switching-based control.

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Dondon, Philippe, and C. A. Bulucea. "An Enhanced Spice and 3D Modelling for Standard Servomotors." WSEAS TRANSACTIONS ON ELECTRONICS 12 (March 4, 2021): 9–18. http://dx.doi.org/10.37394/232017.2021.12.2.

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Servomotors are widely used and well known by hobbyists for control of small scale radio controlled boats, cars or planes. The control is done using a simple PWM signal modulation, easily compatible with a 2 or 4 channels remote control system. As hobbyists are generally simple users, a light knowledge is generally enough to drive this kind of motor. However, in some electronic applications, we need deeper information on servomotors behaviour. Unfortunately, servo manufacturers never give detailed datasheet and no information is available on various WEB sites. Thus, we present in this paper, a SPICE modelling for hobbyist servomotor. Simulation and practical experimentations are done to validate the modelling. Finally, an additional lively 3D modelling is proposed and a concrete didactical application is described before conclusion

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Momose, N., and Y. Tomizawa. "Incident-simulating device with wireless control for extracorporeal circulation crisis management drills." Perfusion 23, no. 1 (January 2008): 17–21. http://dx.doi.org/10.1177/0267659108093874.

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Incidents during extracorporeal circulation (ECC) may lead to serious consequences, and troubleshooting exercises are becoming more important. We developed an incident-simulation device operated by remote control for ECC crisis management drills, and evaluated its efficacy at a seminar for perfusionists. This compact device consists of a transmitter and a receiving system and is run by dry batteries without a personal computer. A 4-channel radio-control system is used as the transmitter, and four servomotors placed in a box as the receiving system. To simulate occlusion of 3/8” arterial and venous lines, two servomotors with a rod rotate and the rod compresses the tube. The tilt angle of the stick and the servomotor rotation are in proportion, so that the degree of occlusion is controlled. As a result, the tube lumen becomes “stenotic” and then occluded, depending on the rotation. To cut off the power, the other two servomotors, with a relay system, work as a breaker. When the rod of the servomotor rotates, a micro-switch is turned off. The present device is able to increase perfusion pressure quickly and to simulate inadequate venous drainage quietly. At a seminar for perfusionists, an instructor manipulated the transmitter to create incidents and the participants handled the events effectively. In conclusion, incidents created by this device were perceived as similar to real ECC crises and this device may be useful and educationally effective when used in crisis management drills for perfusionists and trainees.

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Dülger, L. Canan, and Ali Kireçci. "Motion Control and Implementation for an AC Servomotor System." Modelling and Simulation in Engineering 2007 (2007): 1–6. http://dx.doi.org/10.1155/2007/50586.

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This paper presents a study on trajectory tracking problem for an AC synchronous servomotor. A mathematical model for the system including AC synchronous servomotor, gearbox, and a load is developed to examine the systems dynamic behavior. The system is controlled by a traditional PID (proportional + integral + derivative) controller. The required values for the controller settings are found experimentally. Different motion profiles are designed, and trapezoidal ones are implemented. Thus, the experimental validation of the model is achieved using the experimental setup. The simulation and experimental results are presented. The tracking performance of an AC servomotor system is illustrated with proposed PID controller.

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Augustyn, Damian, and Marek Fidali. "Method of Machining Centre Sliding System Fault Detection using Torque Signals and Autoencoder." Acta Mechanica et Automatica 17, no. 3 (July 15, 2023): 445–51. http://dx.doi.org/10.2478/ama-2023-0051.

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Abstract The sliding system of machining centres often causes maintenance and process problems. Improper operation of the sliding system can result from wear of mechanical parts and drives faults. To detect the faulty operation of the sliding system, measurements of the torque of its servomotors can be used. Servomotor controllers can measure motor current, which can be used to calculate motor torque. For research purposes, the authors used a set of torque signals from the machining centre servomotors that were acquired over a long period. The signals were collected during a diagnostic test programmed in the machining centre controller and performed once per day. In this article, a method for detecting anomalies in torque signals was presented for the condition assessment of the machining centre sliding systems. During the research, an autoencoder was used to detect the anomaly, and the condition was assessed based on the value of the reconstruction error. The results indicate that the anomaly detection method using an autoencoder is an effective solution for detecting damage to the sliding system and can be easily used in a condition monitoring system.

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Su, Kuo Lan, Bo Yi Li, Jr Hung Guo, and H. H. Kevin Chau. "Motion Control of a Robot Arm." Applied Mechanics and Materials 479-480 (December 2013): 768–72. http://dx.doi.org/10.4028/www.scientific.net/amm.479-480.768.

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The article designs a seven joints robot arm using PC-based controller. The system architecture of the robot arm contains seven DC servomotors, seven driver devices and a NI motion control card. The robot arm uses proximity sensors to locate the limit position, and programs motion trajectories to finish assigned tasks. We tune the parameters of the PID controller for the robot arm, and get the nice response to control the robot arm moving to the assigned position. The user interface is developed to control each DC servomotor using Visual Basic. The paper computes the kinematic equations of the seven joints robot arm, and calculates the motion displacement of each joint using inverse kinematic equation. The controller of the robot arm can implement precision point to point motion trajectories, and programs the motion paths on the user interface. In the experimental result, users can program the word type in the user interface. The robot arm catches the pin to write the word in the plane.

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Wang, Ming-Shyan, Ying-Shieh Kung, Edith Putanu, and Chia-Ming Chang. "Networked Controlled Brushless Servomotor Drive." Electric Power Components and Systems 40, no. 3 (January 2, 2012): 321–35. http://dx.doi.org/10.1080/15325008.2011.631083.

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Chen, Shang Liang, Dinh Hoai Nam, and Nguyen Van Thanh. "Synchronous Controller for Dual Servo Motor in Servo Press." Applied Mechanics and Materials 494-495 (February 2014): 1175–81. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.1175.

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This study shows the results of double servomotors synchronization controller (SC) for Mirco-precision servo press. Two systems are used in this study, one is the master motor and another is the slave motor. Each system is designed separately. Also, it is necessary to use the synchronous controller to minimize the synchronization error and the motion command is transmitted simultaneously to two motors. The control system for the master motor includes a feedback controller (FB) and a zero phase error tracking controller (ZPET). For the slave motor, only velocity is controlled. The feedback controller is a cascade control structure, velocity and position controller. It can make the output follows the command. In order to reduce synchronized motion error, two servomotors are synchronized by the SC. The results of simulation reveal that the performance of the overall control system is improved compare to open loop, the synchronous position error between two sliders were less than 4μmm.

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13

Jing, Sun, and Yao Yan-An. "AN INDEPENDENT ACTIVE TORQUE BALANCER USING A SERVO-CONTROLLED DIFFERENTIAL GEAR TRAIN." Transactions of the Canadian Society for Mechanical Engineering 33, no. 2 (June 2009): 329–48. http://dx.doi.org/10.1139/tcsme-2009-0024.

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This paper proposes a novel concept of active balancer for reducing the input torque fluctuations of mechanisms. A differential gear train is used in this active balancer and one of its two input shafts is driven and controlled by a servomotor. From the structural point of view, it is designed as an independent device that can be assembled and disassembled easily; from the functional point of view, it can minimize the torque fluctuations in a variety of working conditions. At first, an exact control function of the servomotor that can totally eliminate the input torque fluctuations of the mechanism is gained by an analytical method; in what follows, an optimization approach is developed to select appropriate control functions for the servomotor to balance the input torque of the working mechanism with consideration of the servomotor’s own input torque minimization; finally, an integrated method is presented for optimizing both the control function of the servomotor and the structure parameters of the differential gear train. Two numerical examples are given to illustrate the design procedure and to show its feasibility.

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Amarapini Divya and Dr.Prasadarao Bobbili. "Comparison and Speed Control of DC Motor and DC Servomotor Using IMC Based PID Controller." International Journal for Modern Trends in Science and Technology 6, no. 12 (January 1, 2021): 493–501. http://dx.doi.org/10.46501/ijmtst061295.

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IMC based PID controllers are being used to speed control of DC motor and DC servomotor in industry. As this controller offer good performance comparitive to conventional controllers like PI, PID and Ziegler Nichols frequency method controllers. This paper presents the speed control of the DC motor and DC servomotor using PI, PID, Ziegler Nichols method and IMC-PID controllers, to realize the optimization of control action. A mathematical calculation of DC motor and DC servomotor has developed and simulations are carried out in MATLAB/ Simulink environment. From the results, it is observed that time domain parameters like rise time 0.6 secs, settling time 2 secs, speed for peak over shoot 1450, peak amplitude 1, with no oscillations using IMC-PID controller on DC motor. And for DC servomotor its rise time is 0.3 seconds, settling time is 1 second, speed for peak overshoot 1450 rpm, peak amplitude 1 with absence of oscillations by using IMC-PID controller

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15

Li, Xue Ting, and An Qun Wang. "High-Sealing Microvalves for PCR." Advanced Materials Research 383-390 (November 2011): 2025–30. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.2025.

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This paper reviews several suitable microvalves for polymerase chain reaction (PCR). First, three type micro-valves in PCR chips are discussed, including pneumatic, servomotor-controlled and passive plug microvalves. Then we present our servomotor-controlled microvalves, with the structure of long passive plug. This valve had many obvious advantages such as simple fabrication and operation, perfect sealing, the ability to withstand relatively high pressure. Furthermore, the microvalve can be operated in a self-actuated mode.

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Paula, Greg. "The Rise of VSR Motors." Mechanical Engineering 120, no. 02 (February 1, 1998): 86–87. http://dx.doi.org/10.1115/1.1998-feb-6.

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This article reviews variable-switched reluctance (VSR) motors that are now entering mainstream use from jet fighters to washing machines. A VSR motor is generally used as a stepper motor and, if properly controlled, can be made to behave like a servomotor. Basically, the motor is a rotor and stator with a coil winding in the stator. VSR motors also provide other benefits. They can be programmed to precisely match the loads they serve, and their simple, rugged construction has no expensive magnets or squirrel cages like the ac induction motor. It can be difficult to give VSR motors a smooth torque profile, so they are used more often in place of variable speed motors than as servomotors. There are ways to control torque ripple, such as adding encoders and electronics to compensate, but these added controls could cost at least as much as what the motor itself would save. VSR motors work with relatively small air gaps. If the shaft is off-center, unbalanced tangential forces come into play, so shafts and bearing systems generally need to be of a higher quality than with other motors.

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17

Watanabe, K., and H. Yokote. "A microstep controller of a DC servomotor." IEEE Transactions on Instrumentation and Measurement 39, no. 6 (1990): 867–69. http://dx.doi.org/10.1109/19.65785.

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Issa, A., and A. Aldair. "Learning the Quadruped Robot by Reinforcement Learning (RL)." Iraqi Journal for Electrical and Electronic Engineering 18, no. 2 (October 6, 2022): 117–26. http://dx.doi.org/10.37917/ijeee.18.2.15.

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In this paper, a simulation was utilized to create and test the suggested controller and to investigate the ability of a quadruped robot based on the SimScape-Multibody toolbox, with PID controllers and deep deterministic policy gradient DDPG Reinforcement learning (RL) techniques. A quadruped robot has been simulated using three different scenarios based on two methods to control its movement, namely PID and DDPG. Instead of using two links per leg, the quadruped robot was constructed with three links per leg, to maximize movement versatility. The quadruped robot-built architecture uses twelve servomotors, three per leg, and 12-PID controllers in total for each servomotor. By utilizing the SimScape-Multibody toolbox, the quadruped robot can build without needing to use the mathematical model. By varying the walking robot's carrying load, the robustness of the developed controller is investigated. Firstly, the walking robot is designed with an open loop system and the result shows that the robot falls at starting of the simulation. Secondly, auto-tuning are used to find the optimal parameter like (KP, KI, and KD) of PID controllers, and resulting shows the robot can walk in a straight line. Finally, DDPG reinforcement learning is proposed to generate and improve the walking motion of the quadruped robot, and the results show that the behaviour of the walking robot has been improved compared with the previous cases, Also, the results produced when RL is employed instead of PID controllers are better.

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19

Lee, J. J. "Adaptive tracking controller of DC servomotors." IEEE Transactions on Consumer Electronics 37, no. 4 (1991): 905–12. http://dx.doi.org/10.1109/30.106957.

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20

Dote, Y. "Fuzzy Neural Position Controller for Servomotors." IFAC Proceedings Volumes 25, no. 29 (October 1992): 183–88. http://dx.doi.org/10.1016/s1474-6670(17)50564-9.

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He, Kai, and Ru Du. "A Simple Parameter Calibration Method for a Novel Controllable Mechanical Metal Forming Press." Materials Science Forum 505-507 (January 2006): 943–48. http://dx.doi.org/10.4028/www.scientific.net/msf.505-507.943.

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This paper introduces a novel controllable mechanical metal forming press, which is a 2-DOF planar mechanism driven by a large constant speed motor and a small servomotor. The constant speed motor provides the main power while the servomotor tunes the trajectory and velocity of the punch in order to realize the controlled punch motion. The new press needs high accuracy, repeatability and resolution to guarantee the controlled punch motion. Improving manufacturing and assembly process could help it, but sometimes is very difficult and not feasible. Therefore parameter calibration has a significant effect on the accuracy, repeatability and resolution of the press. In this work, a simple parameter calibration method is presented without using complex and precise metrology system. Experiment results indicate that this kind of calibration method is fast, easy, accurate and cost effective.

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Guenfaf, L., and S. Allaoua. "Performance Studies of Linear Quadratic AMD Controller for Civil Engineering." Applied Mechanics and Materials 346 (August 2013): 95–100. http://dx.doi.org/10.4028/www.scientific.net/amm.346.95.

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In this paper a Linear Quadratic Regulator (LQR) with and without actuator dynamic model for an electric-type active mass driver (AMD) system for structural vibration control has been developed. The electric-type active mass driver (AMD) system is composed primarily of an electric servomotor and a ball screw, the electrical AMD system is free from noise problems, oil leakage, and labor-intensive maintenance that commonly are associated with hydraulic AMD systems. The desired stroke amplification of the mass and the power demand of the servomotor can be adjusted via the ball screw pitch, which affects the effectiveness and efficiency of the system. The AMD system performances without and with introduction of the actuators dynamic model are explored. The reductions of the peak responses can reach as high as 65% if the actuator is properly chosen. And the proposed system is recommended for practical implementation.

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Kojima, Hiroyuki, Hiroyuki Mitomo, Yuuki Wada, and Kenji Sakamoto. "Study on a Two-Link Horizontal Bar Gymnastics Robot with Passive Joint (Motion Control Using Feedforward Control Based on Inverse Dynamics)." Journal of Robotics and Mechatronics 4, no. 6 (December 20, 1992): 466–71. http://dx.doi.org/10.20965/jrm.1992.p0466.

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This paper describes a motion control method of a twolink horizontal bar gymnastics robot with a passive joint by the use of a feedforward control based on inverse dynamics. A direct current servomotor is placed only at the second joint, and the first link is controlled by the coupling forces and the moments between the active and passive joints. The dynamic behavior of the robot is described by the use of a system with two equations of motion. In the design of the control system, the feedforward control angle of the first joint is first obtained by numerical simulation with the first equation of motion for a desired second joint angle. Then, the feedforward control torque of the servomotor is computed by applying inverse dynamics to the second equation, and the feedforward control voltage is obtained in consideration of the electric circuit of the servomotor. Furthermore, experimental results are given, and the effectiveness of the present motion control method is confirmed.

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Tong, Jing Lin, Bo Li, and Xiao Bo Wang. "The Motion Control System of Servomotor Based on CAN Bus." Applied Mechanics and Materials 163 (April 2012): 260–63. http://dx.doi.org/10.4028/www.scientific.net/amm.163.260.

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This paper introduces the hardware and the communication software design of control system based on Controller Area Network bus. The control system can realize to control the motion of servomotor through high speed C8501F040 single chip microcomputer with Controller Area Network bus and special motion controller - LM628. This system possesses characteristics such as simple structure, high reliability and high performance/price ratio. Key words: CAN bus, LM628, Motion Control System, Communication software

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Yao, Wu-Sung. "Modeling and stabilization of eccentric gravity machinery." Advances in Mechanical Engineering 10, no. 1 (January 2018): 168781401775178. http://dx.doi.org/10.1177/1687814017751782.

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In general, eccentric gravity machinery is a rotation mechanism with eccentric pendulum mechanism, which can be used to convert continuously kinetic energy generated by gravity energy to electric energy. However, a stable rotated velocity of the eccentric gravity machinery is difficult to be achieved only using gravity energy. In this article, a stable velocity control system applied to eccentric gravity machinery is proposed. The dynamic characteristic of eccentric gravity machinery is analyzed and its mathematical model is established, which is used to design the controller. A stable running velocity of the eccentric gravity machinery can be operated by the controlled servomotor. Due to disturbances being periodic, repetitive controller is installed to velocity control loop. The stability performance and control performance of the repetitive control system are discussed. The iterative algorithm of the repetitive control is executed by a digital signal processor TI TMS320C32 floating-point processor. Simulated and experimental results are reported to verify the performance of the proposed eccentric gravity machinery control system.

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Mustafa A. Khamis. "Design and Simulation of Self Tuning Controller for DC Servo Motor." Diyala Journal of Engineering Sciences 6, no. 4 (December 1, 2013): 107–19. http://dx.doi.org/10.24237/djes.2013.06408.

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This paper presents an adaptive controller which improves the tracking performance between the plant and the desired response to obtain model following (the plant response completely follow the desired response). The DC servo motor is used (with fixed and variable load) as the plant response for the adaptive controller and the type of the controller that designed in this paper is indirect self-tuning controller STC with the parameters estimation. The parameters estimation is obtained by using the Least Square Estimation method and the model following is achieved by pole placement design method. Matlab program is used to design and simulation the controller and the simulation results show that the tracking error is reduced until becomes zero. At this point the DC servomotor response is closed to the desired response by the proposed controller as applied to the dc servomotor, also when the gain or the load of the DC servo motor is changed the output response of the STC is closed to the desired response after some time due to the estimation process, and the best value of the forgetting factor is less than one.

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Ajel, Ahmed R., Huda M. Abdul Abbas, and Mohannad Jabbar Mnati. "Position and speed optimization of servo motor control through FPGA." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 1 (February 1, 2021): 319. http://dx.doi.org/10.11591/ijece.v11i1.pp319-327.

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We have put our model in this paper in which we will be controlling the speed and direction of the servomotor through FPGA. So, as to guarantee the precision from the check control procedure, we have made a project in which the document provides the control plane associated with servo motor depending on Altera DE1 board gentle primary processor as program controller. The system utilizes FPGA since the primary gadget, as well as within Quartus II 10.0 program atmosphere. The associated control components aremade to type a good executable control program in which speed and direction will be controlled the servo motor performance. The particular handle signs from your handle method are usually separated and amplified which results in the push to appreciate the particular handle with the servo motor. Based on the features associated with Altera, it is expounded through 2 facets of equipment’s hardware as well as a software program that supplies an answer for that style associated with the servo control system. This particular document utilizes the actual PID control formula to manage the actual common screening device to attain versatile as well as precise control reasons. The actual equipment execution from the PID control formula is put in place through FPGA; precise as well as effective control program is built to enhance the speed and performance of the servomotor through FPGA.

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Strefezza, Miguel, and Yasuhiko Dote. "Neuro-Fuzzy Proportional-Integral-Differential Controller for Alternate Current Servomotor." Integrated Computer-Aided Engineering 2, no. 2 (April 1, 1995): 87–95. http://dx.doi.org/10.3233/ica-1995-2201.

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Hussien, Ayad Q., and Amjed J. Hamidi. "Speed Control of Hydrulic Motor System with Swashplate DC-Controlled Pump." Advanced Materials Research 403-408 (November 2011): 4828–40. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.4828.

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A swash plate pump-controlled hydraulic motor system has been presented in this work. The flow rate of the hydraulic motor system and then the output speed could be controlled by adjusting the swash plate angle. Actuating the swash plate using DC servomotor could enhance dynamic performance of the pump, and then better improve the performance of overall hydraulic motor system. In this study, another speed control configuration has been introduced and the angular velocity of hydraulic motor has been controlled using both PI (proportional and integral) and FL (fuzzy logic) controllers.

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Avram, Georgia Cezara, Florin Adrian Nicolescu, Radu Constantin Parpală, and Constantin Dumitrascu. "Experimental Research to Evaluate Thermal Behavior of a Brushless Driving Servomotor for Linear Motion NC Axis Experimental Stand." Applied Mechanics and Materials 762 (May 2015): 55–60. http://dx.doi.org/10.4028/www.scientific.net/amm.762.55.

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This paper presents the works carried out by the authors in the field of structural and functional optimization of industrial robot's numerically controlled (NC) axes. The study includes the results obtained in the research stage of the experimental measurements performed to evaluate the electrical servomotor's thermal behavior using a thermal (infrared) imaging camera. The analyzed servomotor is a brushless servomotor integrated in an experimental stand for linear motion NC axis experimental research, existing in the MMS department from EMTS faculty. Supplementary to the driving servomotor, the experimental stand includes a belt drive transmission, a ball screw - bearings assembly and a driven element guided by ball rail system. This experimental research phase is part of the doctoral thesis of first author and was conducted in order to validate the mathematical models developed in the PhD thesis. Thus, experimental results presented in the paper have been used to validate first mathematical models for electric motor's preliminary selection and checking, (performed by determining the total reflected inertia of the mechanical system on motor shaft level) as well as the mathematical models for final selection and checking (by evaluating the servomotor's thermal energy dissipation, and servomotor's internal and external maximum operating temperature). Second, the experimental results have been used to validate the assisted simulation for structural and functional optimization of industrial robot's NC axes based on both servomotor and drive's thermal behavior analysis, performed in the thesis by means of a dedicated commercial software package.

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Nicolescu, Florin Adrian, Georgia Cezara Avram, Andrei Mario Ivan, and Adrian Theodor Mantea. "Computer Assisted Selection of Servomotor Driving System for Linear Motion NC Axis Experimental Stand." Applied Mechanics and Materials 762 (May 2015): 61–66. http://dx.doi.org/10.4028/www.scientific.net/amm.762.61.

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The paper presents the works performed by the authors in the field of structural and functional optimization numerically controlled (NC) axes. The study includes two computing applications developed by second author of the paper in a PhD thesis related on NC axes’ structural and functional optimization. The first computing application is used for calculating the total reflected inertia of a linear motion NC axis (total inertial loads' reducing on the driving motor's shaft level). The second computing application is used for both preliminary selection of the driving servomotor (by checking first the accomplishment of the kinematic criterion) and a secondary selection of the electric motor (by checking in a second stage the accomplishment of the static and dynamic criterion). By mean of both software applications optimal matching of servomotor driving system with available NC axis mechanical structure may be determined. The analyzed linear motion NC axis is part of an experimental stand (existing in the MMS department from EMTS faculty), that supplementary to the driving servomotor, includes a belt drive transmission, a ball screw - bearings assembly and a driven element guided by ball rail system.

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Hernandez Arieta, A., R. Katoh, H. Yokoi, and Y. Wenwei. "Development of a Multi-DOF Electromyography Prosthetic System Using the Adaptive Joint Mechanism." Applied Bionics and Biomechanics 3, no. 2 (2006): 101–11. http://dx.doi.org/10.1155/2006/741851.

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This paper describes an electrically powered prosthetic system controlled by electromyography (EMG) signal detected from the skin surface of the human body. The research of electrically powered prosthetic systems is divided into two main subjects. One is the design of the joint mechanism. We propose the use of an adaptive joint mechanism based on the tendon-driven architecture. This mechanism includes mechanical torque–velocity converters and a mechanism to assist the proximal joint torque by distal actuators. The other subject is the recognition of the EMG signal. For the discrimination of many patterns and nonlinear properties of the EMG signal, we propose a controller based on a simple pattern recognition information process. The system also drives 12 servomotors to move the adaptive joint mechanism. In this paper, we show the proposed system and describe the mechanical design of the prosthetic hand. The experimental results show that the electrically powered devices can be controlled using the proposed method.

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Sahib, Mouayad A., Bestoun S. Ahmed, and Moayad Y. Potrus. "Application of Combinatorial Interaction Design for DC Servomotor PID Controller Tuning." Journal of Control Science and Engineering 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/576868.

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Combinatorial optimization has been used in different research areas. It has been employed successfully in software testing fields to construct minimum set of combinations (i.e., in terms of size) which in turn represents the minimum number of test cases. It was also found to be a successful approach that can be applied to solve other similar problems in different fields of research. In line with this approach, this paper presents a new application of the combinational optimization in the design of PID controller for DC servomotor. The design of PID controller involves the determination of three parameters. To find optimal initial PID parameters, different tuning methods have been proposed and designed in the literature. The combinatorial design is concerned with the arrangement of finite set of elements into combinatorial set that satisfies some given constraints. Consequently, the proposed method takes the interaction of the input parameters as a constraint for constructing this combinatorial set. The generated sets are then used in the proposed tuning method. The method proved its effectiveness within a set of experiments in a simulated environment.

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Shtessel, Yuri B., Malek Ghanes, and Roshini S. Ashok. "Hydrogen Fuel Cell and Ultracapacitor Based Electric Power System Sliding Mode Control: Electric Vehicle Application." Energies 13, no. 11 (June 1, 2020): 2798. http://dx.doi.org/10.3390/en13112798.

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Control of a perturbed electric power system comprised of a hydrogen fuel cell (HFC), boost and boost/buck DC–DC power converters, and the ultra-capacitor (UC) is considered within an electric vehicle application. A relative degree approach was applied to control the servomotor speed, which is the main controllable load of the electric car. This control is achieved in the presence of the torque disturbances via directly controlling the armature voltage. The direct voltage control was accomplished by controlling the HFC voltage and the UC current in the presence of the model uncertainties. Controlling the HFC and UC current based on the power balance approach eliminated the non-minimum phase property of the DC–DC boost converter. Conventional first order sliding mode controllers (1-SMC) were employed to control the output voltage of the DC–DC boost power converter and the load current of the UC. The current in HFC and the servomotor speed were controlled by the adaptive-gain second order SMC (2-ASMC). The efficiency and robustness of the HFC/UC-based electric power systems controlled by 1-SMC and 2-ASMC were confirmed on a case study of electric car speed control via computer simulations.

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Abidaoun H. shallal, Rawaa A. Karim, and Osama Y. Al-Rawi. "A Novel Method for Tuning PID Controller." Diyala Journal of Engineering Sciences 6, no. 1 (March 1, 2013): 62–74. http://dx.doi.org/10.24237/djes.2013.06106.

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Proportional integral derivative (PID) control is the most commonly used control algorithm in the industry today. PID controller popularity can be attributed to the controller’s effectiveness in a wide range of operation conditions, its functional simplicity, and the ease with which engineers can implement it using current computer technology . In this paper,the Dc servomotor model is chosen according to his good electrical and mechanical performances more than other Dc motor models , discuss the novel method for tuning PID controller and comparison with Ziegler - Nichols method from through parameters of transient response of any system which uses PID compensator

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Gohari, Mohammad, Zahra Soleymanian, Fahimeh Foroutan, and Mona Tahmasebi. "Design Controller and Fibrication of 5R Parallel Robot For biopsy operation." International Journal of Applied Mathematics, Computational Science and Systems Engineering 4 (December 31, 2022): 93–97. http://dx.doi.org/10.37394/232026.2022.4.12.

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odays, robots are used instead of labors in dangerous environments for long term by more accuracy. Some of them are made as serial arms and rest of them has parallel, configuration. In design of robot, after main configuration, kinematic and dynamic analysis are main steps. By having them controller design is possible. Also, kinematic inverse and dynamic inverse analysis is essential for main processes. parallel robots are employed widely in many applications due to their properties related to geometry. 5R robot is one of them which is utilized in sorting and engraving. Current paper presents a PI controller for this robot which was designed by coupling SolidWorks and MATLAB software to simulate kinematic of robot. It will be used in medicine injection in next work. Finally, a test rig of robot was fabricated in lab for accuracy assessment. It includes two servomotors which is controlled by Arduino as DAQ. The stability of robot in terms of trajectory control was reach properly.

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HIKITA, Hiromitsu, Takehito NODA, Naohiko HANAJIMA, Mitsuhisa YAMASHITA, Takashi SHIRAISHI, and Takumi ITO. "Auto-Tuning of Digital Controllers for DC servomotors." Journal of the Japan Society for Precision Engineering 67, no. 3 (2001): 466–72. http://dx.doi.org/10.2493/jjspe.67.466.

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Suyitno, A., J. Fujikawa, H. Kobayashi, and Y. Dote. "Variable-structured robust controller by fuzzy logic for servomotors." IEEE Transactions on Industrial Electronics 40, no. 1 (1993): 80–88. http://dx.doi.org/10.1109/41.184824.

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Lei, Xiao Bao, Feng Xie, and Ji Wen Zhao. "Design of a 5-Axis CNC Machine Tool Applied to Dental Restoration." Key Engineering Materials 568 (July 2013): 75–80. http://dx.doi.org/10.4028/www.scientific.net/kem.568.75.

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In this work, a 5-axis machine tool used for dental restorations is designed. In view of the fact that its special characteristics of the applications, the mechanical structure and main part of the machine tool have been designed and chosen with careful calculation. The machine tool is equipped with a high speed electro-spindle driven by computerized velocity and can rotate at a maximum speed of 60,000 rpm, which driving unite is equipped with servomotor and optical grating for its better motion precision control. Meanwhile, by using the motion controller card, the machine is controlled with a closed-loop numerical control system. Based on the theory of multi-body system, and through analyzing the matrix of the position transformation and the displacement transformation, a model for positioning errors is put forth for error compensation in programming way. The grinding programs enable exact copies of the object to be fabricated. The satisfactory results show this machine tool has excellent performances.

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Matsumura, Takashi, Yasuharu Hayase, Jerome Blanchet, Naoki Iioka, and Ryo Kato. "Surface Texturing in Micro Parametric Machining." International Journal of Automation Technology 10, no. 1 (January 4, 2016): 30–40. http://dx.doi.org/10.20965/ijat.2016.p0030.

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Parametric machining is applied to fabricate micro-scale textures on surfaces by rotating the workpiece and tool. Periodic circular textures are controlled by only four parameters: the distance from the rotation center of the workpiece to that of the tool holder, the rotation radius of the tool in the tool holder, and the angular velocities of the workpiece and the tool holder. The textures to be machined are controlled by simulating the trajectory of the tool on the workpiece. A texturing machine was developed with two servomotors and three stepping motors, where the rotations of the servomotors were synchronized. Some examples are shown to verify the presented texturing in cutting tests. Because functional surfaces should be controlled by the surface structure, a model is presented to simulate the surface profiles of the textures. The orientation of the cutting tool with respect to the cutting direction is discussed in terms of the surface structure and the surface finish. The cutting load is estimated with the indentation and the shearing components in a simplified force model.

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Dhaouadi, Rached, Mohannad Takrouri, and Ishaq Hafez. "High Precision Sinusoidal Position Tracking of a Voice-Coil Linear Servomotor Using Resonant Control." Electronics 12, no. 4 (February 15, 2023): 977. http://dx.doi.org/10.3390/electronics12040977.

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This paper presents a new sinusoidal position-tracking control scheme with a resonant controller for linear motor drive systems. The sinusoidal tracking controller is designed without any added algorithm for system identification and requires only approximate values of the mechanical parameters. Therefore, the controller is simple and robust to parameter variations. The proposed sinusoidal tracking resonant-based controller (STRC) is designed to track reference positions using a cascade control structure with an inner current/force control with hysteresis current control followed by a speed control loop with a resonant controller, and an outer position loop with a proportional and velocity-feedforward controller. The stability of the cascade feedback scheme and its parameter tuning are analyzed using the Routh–Hurwitz criterion. The performance of the proposed control scheme is validated using simulations and experiments on a voice-coil linear stage. The proposed STRC strategy is characterized by ease of implementation and shows excellent performance with fast response and high accuracy at different frequencies with a maximum error of 0.58% at 0.25 Hz.

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Breaz, Radu Eugen, and Octavian Bologa. "Researches Regarding the Use of Fuzzy Controllers within CNC Feed Drives." Applied Mechanics and Materials 772 (July 2015): 229–34. http://dx.doi.org/10.4028/www.scientific.net/amm.772.229.

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This paper presents some simulation based upon a dynamic model of a feed-drive within the structure of a CNC machine tool. A DC servomotor was considered as actuation device for the feed drive. For a given set of parameters for the position controller, two fuzzy types of fuzzy controllers were tested by means of simulation. The first fuzzy controller was a proportional one, with one input and one output, while the second one was a two variables one, with two inputs and one outputp.

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HARA, Susumu. "Power-Assist Controller Design Permitting Abnormality Detection by Means of DC Servomotor." Transactions of the Japan Society of Mechanical Engineers Series C 72, no. 722 (2006): 3310–16. http://dx.doi.org/10.1299/kikaic.72.3310.

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Karunadasa, J. P., and A. C. Renfrew. "Design and implementation of microporcessor based sliding mode controller for brushless servomotor." IEE Proceedings B Electric Power Applications 138, no. 6 (1991): 345. http://dx.doi.org/10.1049/ip-b.1991.0042.

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Shieh, Ming-Yuan, and Tzuu-Hseng S. Li. "Design and implementation of integrated fuzzy logic controller for a servomotor system." Mechatronics 8, no. 3 (April 1998): 217–40. http://dx.doi.org/10.1016/s0957-4158(97)00052-4.

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Wu, Wei Bin, Tian Sheng Hong, Xu Xiang Chen, Shi Ting Yang, and Kai Cheng Chen. "Research of System of Trailer Axle’s Function Test." Applied Mechanics and Materials 44-47 (December 2010): 941–45. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.941.

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Axle is one of the most important parts related to the safety of trailer’s operation on the railroad. In China, the checking of axles is mainly through visual inspection and hammer examinations. The construction of an automation hardware system was simulated by Pro/E, including support, guide rail, sensor, AC servomotor and servo driver conformed to the model. Next, for controlling the operation of the entire system, LabVIEW was used to write a program and to control the rotation of servomotor. The pressure heads controlled by linkage system were utilized to load the axle; meanwhile, through the PCI of NI, the data of pressure and displacement was collected. After calibration, the relative error of pinpointing sensor was 5.207%, and the average relative error was about 1.4%. Analyzed by SPSS, the voltage-load formula's correlation coefficient R is greater than 0.994, while the significance is less than 0.05, showing the regression of great significance. Finally, the capabilities of the simulated axle, such as fatigue, stiffness, intensity and stress, were analyzed carefully.

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Wu, Jian Xin, Xiang Dong Qi, Yan Wang, and Di Wu. "ADAMS MATLAB Co-Simulation of Dynamics Parallel Manipulator." Advanced Materials Research 295-297 (July 2011): 2125–28. http://dx.doi.org/10.4028/www.scientific.net/amr.295-297.2125.

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Electromechanical coupling dynamic of parallel manipulator is a multi-input, multi-output, non linearity, tight coupling, and complex electromechanical system, but now there isn’t have a mature model of Parallel manipulator dynamic and methods of Simulation calculation. In this following passage, aiming at 3PUU parallel manipulator, we establish dynamic model In ADAMS software; design the servo controller in MATLAB and setting to the control parameters. The co-simulation results computer simulation validate the rationality of modeling of electromechanical coupling dynamics and show the optimal control of the mechanism’s displacement and torque of the servomotor by controller.

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Nakajima, Shin-ichi, Toyohiko Hayashi, and Hiroshi Kobayashi. "Development of 2-D Jaw Movement Simulator (JSN/S1)." Journal of Robotics and Mechatronics 10, no. 6 (December 20, 1998): 499–504. http://dx.doi.org/10.20965/jrm.1998.p0499.

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Human mastication is performed by coordinated activities of several jaw muscles. To clarify functions of these muscles, we developed a jaw movement simulator (JSN/Sl) consisting of a 2 degrees of freedom (2DOF) mechanism and five muscle actuators able to reproduce jaw movements on a sagittal plane. The actuator is a cable-tendon driven by a DC servomotor controlled by a compliance control scheme to obtain viscoelastic muscle characteristics. To simulate life-like clenching, we controlled occlusal position and force by incorporating position and force sensors, using neural network learning control. Occlusal force successfully converged to a desired value through learning. Tension patterns of muscle actuators during clenching well coincided with human jaw activities.

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Senapati, Arnob. "Speed Performance Analysis and Control of DC Servomotor Using Linear & Nonlinear Controller." International Journal for Research in Applied Science and Engineering Technology 6, no. 1 (January 31, 2018): 1338–47. http://dx.doi.org/10.22214/ijraset.2018.1206.

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Al-Harthi, Mosleh. "Design of a Fuzzy-Based PID Controller for a DC Servomotor Position Control." Menoufia Journal of Electronic Engineering Research 17, no. 2 (July 1, 2008): 125–38. http://dx.doi.org/10.21608/mjeer.2008.65212.

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Journal articles on the topic 'SERVOMOTER CONTROLLED'

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