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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Drive and Control
Journal Basic Information
Journal DOI :
Korea Society of Fluid Power & Construction Equipments
Editor in Chief :
Volume & Issues
Volume 12, Issue 4 - Dec 2015
Volume 12, Issue 3 - Sep 2015
Volume 12, Issue 2 - Jun 2015
Volume 12, Issue 1 - Mar 2015
Selecting the target year
Robust Control System Design for Robot Motion Regeneration under Disturbance Input
Dang, Dac-Chi. ; Kang, C.N. ; Kim, Y.B. ;
Journal of Drive and Control, volume 12, issue 3, 2015, Pages 1~10
DOI : 10.7839/ksfc.2015.12.3.001
In this paper, the authors propose a method to easily recognize and reproduce the robot motion made by an operator. This method is targets for applications similar to painting and welding, and it is based on a process of that identifies a family of plants, by control design and by conducting an experimental evaluation. In this study, the models and controllers for all joints of 3DOF robot system are obtained individually. And a robust control system for motion control of the individual joints is designed based on
control framework. An experimental comparison is made between the proposed control method and existing PID control method. And the results indicate that the proposed designing method is more efficient and useful than conventional method.
A Study on Modeling of Pneumatic System for an IDC Device
Nguyen, C.T. ; Le, Q.H. ; Jeong, Y.M. ; Yang, S.Y. ;
Journal of Drive and Control, volume 12, issue 3, 2015, Pages 11~17
DOI : 10.7839/ksfc.2015.12.3.011
An intelligent deburring control (IDC) device is used to control the constant force for a deburring tool mounted on the end-effector of a robotic arm. This device maintains a constant contact force between the deburring tool and the workpiece in order to provide a good deburring performance. In this paper, we build a mathematical model in Matlab/Simulink to estimate the force control mechanism of the pneumatic system for the IDC device. The Simulink blocks are built for each separate part and are linked into an integrated simulation system. Such a model also relies on the effects of the flow rate through the valve, air compressibility in the cylinder, and time delay in the pressure valve. The results of the simulation are compared to a simple experiment in which convenient math modeling is performed. These results are then used to optimize the mechanical design and to develop a force control algorithm for the pneumatic cylinder.
Development of Power Distribution Control Strategy for Plug-in Hybrid Electric Vehicle using Neural Network
Sim, K.H. ; Lee, S.J. ; Lee, J.S. ; Namkoong, C. ; Han, K.S. ; Hwang, S.H. ;
Journal of Drive and Control, volume 12, issue 3, 2015, Pages 18~24
DOI : 10.7839/ksfc.2015.12.3.018
The plug-in hybrid electric vehicle has a high fuel economy and can be driven long distances. Its different modes include the electric vehicle, hybrid electric vehicle, and only engine operating mode. A power management strategy is important to determine which mode should be selected. The strategy makes the vehicle more efficient using appropriate power sources for driving. However, the strategy usually needs a driving speed profile which is future driving cycle. If the profile is known, the strategy easily determines which mode is driven efficiently. However, it is difficult to estimate the speed profile for a real system. To address this problem, this paper proposes a new power distribution strategy using a neural network. The average speed and driving range are used as input parameters to train the neural network system. The strategy determines a limit for the use of the battery and the desired power is distributed between the engine and the motor simultaneously. Its fuel economy can increase by improving the basic strategy.
Investigation of Moving Angle of Power Take off Mechanism on the Efficiency of Wave Energy Converter
Do, H.T. ; Nguyen, M.T. ; Phan, C.B. ; Lee, S.Y. ; Park, H.G. ; Ahn, K.K. ;
Journal of Drive and Control, volume 12, issue 3, 2015, Pages 25~35
DOI : 10.7839/ksfc.2015.12.3.025
The hydraulic power-take-off mechanism (HPTO) is one of the most popular methods in wave energy converters (WECs). However, the conventional HPTO with only one direction motion has a number of drawbacks that limit its power capture capability. This paper proposes an adjustable moving angle wave energy converter (AMAWEC) and investigates the effect of the moving angle on the performance of the wave energy converter to find the optimal moving angle in order to increase the power capture capability as well as energy efficiency. A mathematical model of components from a floating buoy to a hydraulic motor was modeled. A small scale WEC test rig was fabricated to verify the power capture capability and efficiency of the proposed system through experiments.
Autonomous Vehicle Driving Control Considering Tire Slip and Steering Actuator Performance
Park, C.H. ; Gwak, G.S. ; Jeong, H.U. ; Hong, D.U. ; Hwang, S.H. ;
Journal of Drive and Control, volume 12, issue 3, 2015, Pages 36~43
DOI : 10.7839/ksfc.2015.12.3.036
An autonomous vehicle control algorithm based on Ackerman Geometry is known to be reliable in low tire slip situation. However, vehicles at high speed make lateral errors due to high tire slip. In this paper, considering the tire slip of vehicles, the steering angle is determined based on the Ackerman Geometry and is supplemented tire slip angle by the Stanley steering algorithm. In addition, to prevent the tire slip, the algorithm, which restricts steering if a certain level of slip occurs, is used to reduce the lateral error. While many studies have been extended to include vehicle slip, studies also need to be carried out on the tire slip depending on hardware performance. The control algorithm of autonomous vehicles is compensated considering the sensor noise and the performance of steering actuator. Through the various simulations, it was found that the performance of steering actuator was the key factor affecting the performance of autonomous driving. Also, it was verified that the usefulness of steering algorithm considering the tire slip and performance of steering actuator.
Study on Bandwidth Frequency of Servovalve based on Metering Cylinder
Kim, S.D. ; An, Wen-Long ; Jeon, S.H. ;
Journal of Drive and Control, volume 12, issue 3, 2015, Pages 44~51
DOI : 10.7839/ksfc.2015.12.3.044
In this study, a metering cylinder was constructed, and the velocity obtained from the linear velocity transducer (LVT) of the cylinder piston was used to evaluate the dynamic performance of an electro-hydraulic servovalve. Frequency response experiments involving the spool displacement and piston velocity (LVT signal) were conducted with different input signal amplitudes, hydraulic pipe diameters, and supply pressures. The spool displacement signal accurately reflected the performance of the servovalve. Meanwhile, the -3 dB bandwidth frequency of the LVT signal was similar to the spool displacement signal, except for a small-amplitude input signal, and the
phase lag bandwidth frequency showed some differences.
Development and Verification of Analytical Model of a Pilot Operated Flow Control Valve for 21-ton Electric Excavator
Kim, D.M. ; Nam, Y.Y. ; Seo, J.H. ; Jang, J.S. ;
Journal of Drive and Control, volume 12, issue 3, 2015, Pages 52~59
DOI : 10.7839/ksfc.2015.12.3.052
An electro hydraulic poppet valve (EHPV) and a variable orifice poppet are assembled in a single block, which is referred to as a RHINO but is also generally called a pilot-operated flow control valve. In this study, we analyzed the structure and the operating principle for a RHINO applied in a 21-ton electric excavator system. The RHINO was experimentally tested to measure the dynamic responses and the pressure energy loss. In this test, we investigated the variation in the conductance coefficient according to the increase in the supply pressure under a constant current and a variation in the flow rate according to the increase in the current. Then, the geometrical shapes and the spring stiffness of the RHINO were considered to develop an analysis model. The characteristics (current-force and hysteresis) for the solenoid based on the experimental data were reflected in the analysis model that was developed, and the reliability of the analysis model was also verified by comparing the experimental and analytical results. The developed model is thus considered to be reliable for use in a wide range of applications, including optimum design, sensitivity analysis, parameter tuning, etc.