Biting prevention type fitting control system using tactile force measurement information for precision assembly work

Author(s):  
Hikaru SUZUKI ◽  
Takahito YAMASHITA ◽  
Ryosuke TASAKI
2021 ◽  
Vol 1 (2) ◽  
pp. 52-63
Author(s):  
E. V. Tuev ◽  
M.F. Kozlova ◽  
O.I. Olshevskaya

The article discusses the implementation of monitoring the efficiency of enterprises using a special subsystem of the automated control system. It is shown that the analysis within the framework of the performance monitoring subsystem in the automated control system can be carried out with the integration of all available types of measurement information, for example, telemetry, command-software, etc. A list of tasks for monitoring the functioning and operability of the monitoring object, as well as predicting the behavior of the controlled object is presented. The unified structure of the enterprise with the parameters of the functioning of its objects is highlighted, which is presented using the mathematical apparatus of the vector representation of the essence of objects. The steps of the algorithm of the performance monitoring subsystem in the automated control system are developed and the features of the application of the developed monitoring subsystem in processing enterprises are presented on the example of processing bauxite, oil and solid household waste.


2016 ◽  
Vol 20 (suppl. 2) ◽  
pp. 537-548 ◽  
Author(s):  
Paramin Neranon ◽  
Robert Bicker

With regard to both human and robot capabilities, human-robot interaction provides several benefits, and this will be significantly developed and implemented. This work focuses on the development of real-time external force/position control used for human-robot interaction. The force-controlled robotic system integrated with proportional integral control was performed and evaluated to ensure its reliably and timely operational characteristics, in which appropriate proportional integral gains were experimentally adopted using a set of virtual crank-turning tests. The designed robotic system is made up of a robot manipulator arm, an ATI Gamma multi-axis force/torque sensor and a real-time external PC based control system. A proportional integral controller has been developed to provide stable and robust force control on unknown environmental stiffness and motion. To quantify its effectiveness, the robotic system has been verified through a comprehensive set of experiments, in which force measurement and ALTER real-time path control systems were evaluated. In summary, the results indicated satisfactorily stable performance of the robot force/position control system. The gain tuning for proportional plus integral control algorithm was successfully implemented. It can be reported that the best performance as specified by the error root mean square method of the radial force is observed with proportional and integral gains of 0.10 and 0.005 respectively.


ACTA IMEKO ◽  
2017 ◽  
Vol 6 (2) ◽  
pp. 54
Author(s):  
Ryosuke Tasaki ◽  
Kazuhiko Terashima

<p class="Abstract"><span lang="EN-US">This paper presents a measurement system for molten metal’s reaction force and estimation of liquid pressure during pressing to control the iron product quality. We have developed a new type of casting process. In the process, molten metal is quickly filled into casting molds by high-speed pressing. Casting defects such as physical metal penetration is often caused by excess pressure. Hence, we have constructed a pressure control system using a mathematical model-based off-line simulation to derive the ideal feedforward control input of pressing. However, it is difficult to accurately control the pressure in cases of varying conditions such as liquid volume and temperature changes. Also, pressure measurements by using contact-type sensors directly is impossible for molten metal, because of the high temperature of the liquid, over 1400 °C. So, we have proposed a new pressure estimation method with force measurement data processing. Here, the exact reaction force from the molten metal must be accurately observed by a force sensor set between the upper mold and its elevating device. The viscosity coefficient can also be calculated on a real-time basis. The proposed force measurement system will realize an improved casting quality due to the effective feed-back control system.</span></p>


2021 ◽  
Vol 1 (2) ◽  
pp. 34-45
Author(s):  
E. V. Tuev ◽  
M.F. Kozlova ◽  
O.I. Olshevskaya

The article discusses the implementation of monitoring the efficiency of enterprises using a special subsystem of the automated control system. It is shown that the analysis within the framework of the performance monitoring subsystem in the automated control system can be carried out with the integration of all available types of measurement information, for example, telemetry, command-software, etc. A list of tasks for monitoring the functioning and operability of the monitoring object, as well as predicting the behavior of the controlled object is presented. The unified structure of the enterprise with the parameters of the functioning of its objects is highlighted, which is presented using the mathematical apparatus of the vector representation of the essence of objects. The steps of the algorithm of the performance monitoring subsystem in the automated control system are developed and the features of the application of the developed monitoring subsystem in processing enterprises are presented on the example of processing bauxite, oil and solid household waste.


2017 ◽  
Vol 14 (4) ◽  
pp. 102-109
Author(s):  
A. I. Tatarinov

System analysis is used to study the relationships between the elements of the remote control system. This allows us to evaluate the operation of any system, as a whole, as well as its individual elements, to understand the structure of the system, to identify and conduct an analysis of systemic relationships between the elements. In order to provide remote control (RC) by a mobile measuring point, as well as receiving from it measurement information and state information, it is required to analyze all aspects of information interaction with IIP. As a result of the study, it was found out that the following components should participate in the information exchange from the MMP: the mobile measuring point server, the mobile antenna system, the small reception radio-telemetry station. Also the conducted research has shown that the information interaction with MMP should be organized in the following directions: - reception of initial data (ID) by the MMP server for conducting measurement sessions; - transfer by the MMP server of information about the current state of the remote operator; - remote control of the MMP by sending commands from the MMP server to the mobile antenna system, a small receiving radio telemetry station and receiving response messages from them; - transfer by the MMP server of the registered measurement information to the remote operator after the measurement session.


Author(s):  
W. J. Abramson ◽  
H. W. Estry ◽  
L. F. Allard

LaB6 emitters are becoming increasingly popular as direct replacements for tungsten filaments in the electron guns of modern electron-beam instruments. These emitters offer order of magnitude increases in beam brightness, and, with appropriate care in operation, a corresponding increase in source lifetime. They are, however, an order of magnitude more expensive, and may be easily damaged (by improper vacuum conditions and thermal shock) during saturation/desaturation operations. These operations typically require several minutes of an operator's attention, which becomes tedious and subject to error, particularly since the emitter must be cooled during sample exchanges to minimize damage from random vacuum excursions. We have designed a control system for LaBg emitters which relieves the operator of the necessity for manually controlling the emitter power, minimizes the danger of accidental improper operation, and makes the use of these emitters routine on multi-user instruments.Figure 1 is a block schematic of the main components of the control system, and Figure 2 shows the control box.


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