Multiaxis interferometric displacement measurement for local probe microscopy

Open Physics ◽  
2012 ◽  
Vol 10 (1) ◽  
Author(s):  
Josef Lazar ◽  
Jan Hrabina ◽  
Mojmír Šerý ◽  
Petr Klapetek ◽  
Ondřej Číp
Keyword(s):  
Position Control ◽  
Primary Standard ◽  
Displacement Measurement ◽  
Positioning System ◽  
Monitoring And Control ◽  
Design And Development ◽  
Probe Microscopy ◽  
Sample Position ◽  
Microscopy Techniques ◽  
And Control

AbstractWe present an overview of design approaches for nanometrology measuring setups with a focus on interferometry techniques and associated problems. The design and development of a positioning system with interferometric multiaxis monitoring and control is presented. The system is intended to operate as a national nanometrology standard combining local probe microscopy techniques and sample position control with traceability to the primary standard of length.

Modular CNC Design for Intelligent Machining, Part 2: Modular Integration of Sensor Based Milling Process Monitoring and Control Tasks

1996 ◽  
Vol 118 (4) ◽  
pp. 514-521 ◽  
Author(s):  
Y. Altintas¸ ◽  
W. K. Munasinghe
Keyword(s):  
Process Control ◽  
Real Time ◽  
Process Monitoring ◽  
Tool Path ◽  
Position Control ◽  
Milling Process ◽  
Machining Process ◽  
Monitoring And Control ◽  
Process Monitoring And Control ◽  
And Control

Modular integration of sensor based milling process monitoring and control functions to a proposed CNC system architecture is presented. Each sensor based process control algorithm resides in a dedicated processor in the AT bus with a modular software. The CNC system’s motion control module has been designed to accomodate rapid manipulation of feeds, cutting conditions and NC tool path which may be demanded by machining process control modules in real time. Modular integration of adaptive control of cutting forces, tool condition monitoring, chatter detection and suppression tasks are illustrated as examples. The process control and monitoring modules are serviced in the real-time multi-tasking environment within one millisecond time intervals without disturbing the position control system. The paper present constraints and guidelines in designing CNC systems which allow modular integration of user developed real time machining process control and monitoring applications.

scholarly journals THE IMPACT OF STRATEGIC LEADERSHIP ON ORGANISATIONAL AMBIDEXTERITY AT THE KING ABDULLAH II DESIGN AND DEVELOPMENT BUREAU (KADDB)

2021 ◽  
Vol 5 (3) ◽  
pp. 20-38
Author(s):  
Hamza Alzawahrah ◽  
Maha Alkhaffaf
Keyword(s):  
Data Collection ◽  
Strategic Leadership ◽  
Environmental Scanning ◽  
Monitoring And Control ◽  
Design And Development ◽  
Strategic Direction ◽  
And Control ◽  
The Impact ◽  
Leadership Dimensions ◽  
Development Department

This study aimed at identifying the impact of strategic leadership dimensions, such as defining strategic direction, investing strategic capabilities, and implementing balanced organisational supervision, on the organisational ambidexterity dimension at the King Abdullah II Design and Development Bureau (KADDB). The sample consisted of the directors at top and middle management at KADDB, totalling 92 directors. Further, a questionnaire was used as a tool for data collection through Google Forms for the convenience of data collection and edition. 86 valid questionnaires were retrieved before the analytical descriptive approach was used, and, following this, data analysation and hypotheses tests were carried out according to the descriptive statistic measures and statistical analysis program Smart PLS v. 3. The results indicated high relative importance of the strategic leadership and organisational ambidexterity at KADDB, and, notably, a statistically significant impact of strategic leadership was approved on organisational ambidexterity at KADDB at the significant level (P ≤ 0.05). This significant impact was approved for all the dimensions of strategic leadership except for the dimension ‘promoting human capital’. In light of the findings, the researchers recommended that KADDB should: improve organisational ambidexterity and its activities (exploration and exploitation) by organising special steering committees for this purpose within the business development department at KADDB; pay more attention to environmental scanning; balance the patterns of results-based monitoring and control; empower employees; and, finally, improve the current recruitment, promotion, and reward systems.

scholarly journals Cartesian Aerial Manipulator with Compliant Arm

2021 ◽  
Vol 11 (3) ◽  
pp. 1001
Author(s):  
Alejandro Suarez ◽  
Manuel Perez ◽  
Guillermo Heredia ◽  
Anibal Ollero
Keyword(s):  
Dynamic Models ◽  
Position Control ◽  
Force Sensor ◽  
Monitoring And Control ◽  
End Effector ◽  
Robotic Arms ◽  
Revolute Joints ◽  
Angular Deflection ◽  
Compliant Joint ◽  
And Control

This paper presents an aerial manipulation robot consisting of a hexa-rotor equipped with a 2-DOF (degree of freedom) Cartesian base (XY–axes) that supports a 1-DOF compliant joint arm that integrates a gripper and an elastic linear force sensor. The proposed kinematic configuration improves the positioning accuracy of the end effector with respect to robotic arms with revolute joints, where each coordinate of the Cartesian position depends on all the joint angles. The Cartesian base reduces the inertia of the manipulator and the energy consumption since it does not need to lift its own weight. Consequently, the required torque is lower and, thus, the weight of the actuators. The linear and angular deflection sensors of the arm allow the estimation, monitoring and control of the interaction wrenches exerted in two axes (XZ) at the end effector. The kinematic and dynamic models are derived and compared with respect to a revolute-joint arm, proposing a force-position control scheme for the aerial robot. A battery counterweight mechanism is also incorporated in the X–axis linear guide to partially compensate for the motion of the manipulator. Experimental results indoors and outdoors show the performance of the robot, including object grasping and retrieval, contact force control, and force monitoring in grabbing situations.

Challenges on Coordination for Cyber-Physical Systems

2013 ◽  
Vol 347-350 ◽  
pp. 2942-2946
Author(s):  
Meng Sun
Keyword(s):  
Physical World ◽  
Cyber Physical Systems ◽  
Complex Interaction ◽  
Monitoring And Control ◽  
Design And Development ◽  
Physical Systems ◽  
Analysis Design ◽  
New Challenges ◽  
And Control

Cyber-physical systems integrate computing and communication with monitoring and control of physical entities. The complex interaction with the physical world makes coordination models and languages very important for the analysis, design and development of cyber-physical systems. This paper discusses several new challenges on coordination models and languages in the context of the emerging phenomenon of cyber-physical systems.

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