Human Centered Control in Robotics and Consumer Product Design

1993 ◽  
Vol 115 (2B) ◽  
pp. 271-280 ◽  
Author(s):  
Harichiko Asada ◽  
Clifford C. Federspiel ◽  
Sheng Liu

Human factors in the control and programming of robots and electric appliances are addressed in this paper. Systems and control techniques for the enhancement of human-machine communication as well as learning and adaptation to human needs are described with exemplary case studies. First, fundamental issues and methodologies, as well as historical perspective of relevant fields, are summarized, and two case studies are then discussed. One is user-adaptable control of air conditioners, a new type of adaptive control that allows an air conditioner to learn the thermal preference of the user. The other is a user-friendly programming method for advanced robot control. A task-level adaptive control system is developed by acquiring control skills by direct communication with human experts. The importance of human-machine communication and its impact on product development are addressed from the systems and control point of view.

Author(s):  
Sujay D. Kadam ◽  
Utsav Shah ◽  
Alrick D’Souza ◽  
Prajwal Gowdru Shanthamurthy ◽  
Nidhish Raj ◽  
...  

Abstract This paper introduces the swirling pendulum, a two-link, two degree-of-freedom mechanism which is under-actuated and has an unusual non-planar coupling with axis of rotation of the two links being perpendicular to each other. The swirling pendulum mechanism, while being simple to mathematically represent and easy to physically construct, exhibits several properties like loss of inertial coupling, loss of relative degree, multiple stable and unstable equilibrium points. These properties are unique as well as interesting from dynamics and controls point of view which make the swirling pendulum an excellent test-bed for testing various ideas in control and demonstrating several notions associated with systems and control theory. In this paper, we discuss the modeling of the swirling pendulum mechanism based on Lagrange’s equation along with an analysis related to equilibrium points and their stability. We also present simulation results for regulatory as well as tracking control tasks through simulations on a non-linear model using control methods like LQR, lead compensator and system inversion-based control to demonstrate the utility of the proposed mechanism in the area of systems, control and dynamics. Furthermore, we also discuss experimental results for controls applied on a real-time hardware setup.


2013 ◽  
Vol 2013 ◽  
pp. 1-14 ◽  
Author(s):  
Margarita Rivero ◽  
Sergei V. Rogosin ◽  
José A. Tenreiro Machado ◽  
Juan J. Trujillo

The theory and applications of fractional calculus (FC) had a considerable progress during the last years. Dynamical systems and control are one of the most active areas, and several authors focused on the stability of fractional order systems. Nevertheless, due to the multitude of efforts in a short period of time, contributions are scattered along the literature, and it becomes difficult for researchers to have a complete and systematic picture of the present day knowledge. This paper is an attempt to overcome this situation by reviewing the state of the art and putting this topic in a systematic form. While the problem is formulated with rigour, from the mathematical point of view, the exposition intends to be easy to read by the applied researchers. Different types of systems are considered, namely, linear/nonlinear, positive, with delay, distributed, and continuous/discrete. Several possible routes of future progress that emerge are also tackled.


2016 ◽  
Vol 49 (6) ◽  
pp. 274-279 ◽  
Author(s):  
T. Vámos ◽  
R. Bars ◽  
D. Sik

2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Tibor Vámos ◽  
Bars Ruth ◽  
László Keviczky ◽  
Dávid Sík

System view, understanding systems and how they are controlled is an important discipline in engineering education. Nowadays considering the ever increasing knowledge, the explosion of information available at the internet, the available visual technics and software tools there is a need to revisit the content and the teaching methodology of the first control course. The IFAC Technical Committee on Control Education (9.4) is circulating a pilot survey addressing these questions. Here we present our experience related to renewing the control course. The topics of the course are given. The main ideas are explained on two levels: hopefully in an understandable way for everyone, and precisely, using mathematical tools. In the lectures some parts of the multilevel e-book, Sysbook are referred, which has been elaborated to present the main principles governing systems and control on different levels. Besides static teaching materials interactive demonstrations developed for Sysbook are also used in the lectures which enhance the effectiveness and also enjoyment of the learning process. At the last part of each lecture the students are active solving problems related to the topic of the lecture. They are motivated by the obtained extra evaluation points. Then the solutions of the problems are discussed. Computer laboratory exercises using MATLAB/SIMULINK software contribute to understanding and applying the analysis and synthesis methods discussed in the lectures. The course is supported by the recently published Springer books: Keviczky et al.: Control Engineering and Control Engineering: MATLAB Exercises. In the content of the control course a new feature is the emphasis of the YOULA parameterization method for controller design already in the first control course and showing that other controller design methods can be considered as its special cases. Nowadays in education a new teaching – learning paradigm is Open Content Development (OCD) which means active participation of the teachers and students creating an up-to-date teaching material. This project runs at the Department of Technical Education at the Budapest University of Technology and Economics since 2015 supported by the Hungarian Academy of Sciences. In the frame of vocational teacher training programs several so-called micro-contents have been developed. Utilizing the experiences of these pilot efforts the Sysbook platform has been connected to the OCD model. In a special surface Sysbook provides several case studies for systems and their control (e.g. driving, energy production and distribution, oil refinery, systems and control in the living organism, etc.). Teachers and students studying systems and control can elaborate new case studies in their areas of interest which means active application of the learned topics. After evaluation these projects can be uploaded in the student area of Sysbook. Summarizing: in the methodology of teaching a basic control course the motivation of the students can be increased by active participation in the learning process, including interactive demonstration of the principles, solving exercises at the end of the lectures and getting immediate feedback, solving analysis and synthesis problems in the computer laboratories, and developing their own case studies for Sysbook. It should be also emphasized that the examples of systems and their control should be chosen mainly from the area of the specialization of the students (electrical or software engineering, chemical engineering, biology, economics, etc.). Also it is important to provide real-time experiments in laboratory work or using distant laboratories. IFAC Repository would be also of great help reaching useful resources.


2018 ◽  
Vol 931 ◽  
pp. 920-925
Author(s):  
Zohrab Melikyan ◽  
Naira Egnatosyan ◽  
Siranush Egnatosyan

Centralized air conditioning systems are widely used in buildings at present. In these conditioners, the outside air gets required temperature, humidity, purity, and other features, necessary for creating comfort microclimate in inside areas of houses, and by the help of fans and air ducts the processed air moves to all rooms of a building. As a result, the creation and maintenance of comfort conditions in buildings become complicated and expensive activity. From this point of view, it is becoming more expedient to install local air conditioners in each room instead of single central one for the whole building. For this reason new local air conditioner is developed.


2016 ◽  
Vol 65 (3) ◽  
pp. 541-558
Author(s):  
Jerzy Tchórzewski

Abstract The paper contains selected results of research on the Domestic Power System (DPS) as an unmanned factory. Models of the DPS system of the MISO type, obtained as a result of identification for 14 inputs and 4 outputs were presented. Particular attention was given to the identification and the assessment of the DPS development based on the systems and control theory. The obtained models of the DPS development were analyzed and discussed. The studies were obtained model of the development of the DPS, and on the basis of is knowledge of the structural and parametrical changes of system development. The model can be used to analyze the design and development of the system from the point of view of the growth of internal organization system and the transition to higher levels of control.


Author(s):  
L. Piermattei ◽  
W. Karel ◽  
A. Vettore ◽  
N. Pfeifer

High resolution 3D models produced from photographs acquired with consumer-grade cameras are becoming increasingly common in the fields of geosciences. However, the quality of an image-based 3D model depends on the planning of the photogrammetric surveys. This means that the geometric configuration of the multi-view camera network and the control data have to be designed in accordance with the required accuracy, resolution and completeness. From a practical application point of view, a proper planning (of both photos and control data) of the photogrammetric survey especially for terrestrial acquisition, is not always ensured due to limited accessibility of the target object and the presence of occlusions. To solve these problems, we propose a different image acquisition strategy and we test different geo-referencing scenarios to deal with the practical issues of a terrestrial photogrammetric survey. The proposed photogrammetric survey procedure is based on the acquisition of a sequence of images in panorama mode by rotating the camera on a standard tripod. The offset of the pivot point from the projection center prevents the stitching of these images into a panorama. We demonstrate how to still take advantage of this capturing mode. The geo-referencing investigation consists of testing the use of directly observed coordinates of the camera positions, different ground control point (GCP) configurations, and GCPs with different accuracies, i.e. artificial targets vs. natural features. Images of the test field in a low-slope hill were acquired from the ground using an SLR camera. To validate the photogrammetric results a terrestrial laser scanner survey is used as benchmark.


2018 ◽  
Vol 1 (1) ◽  
pp. 31-36 ◽  
Author(s):  
Emőd Filep ◽  
Dénes Nimród Kutasi ◽  
Lajos Kenéz

Abstract Knowledge of the surface emissivity of metals is becoming more and more important both from the material science, process modelling and control point of view. Previous research results have shown that the emissivity of most metals depends on the temperature of the surface. It has also been reported that the most important temperature region is between 300 – 1000 K degrees, where the change of the emissivity is the most intense, which is also the most significant from a process control point of view [1]. We also report temperature dependent emissivity observed during plasma nitriding of low alloy steels [2]. Related to one of our present research topics the study of the low alloy aluminum (AlMg1, AlMg3) emissivity has prooven relevant. In this article the developed emissivity estimation model is presented. In the first part a literature overview and the theoretical approach of the new method is discussed, followed by the experimental results for low alloy aluminium emissivity determination and a comparison with the results available in the literature.


Author(s):  
L. Piermattei ◽  
W. Karel ◽  
A. Vettore ◽  
N. Pfeifer

High resolution 3D models produced from photographs acquired with consumer-grade cameras are becoming increasingly common in the fields of geosciences. However, the quality of an image-based 3D model depends on the planning of the photogrammetric surveys. This means that the geometric configuration of the multi-view camera network and the control data have to be designed in accordance with the required accuracy, resolution and completeness. From a practical application point of view, a proper planning (of both photos and control data) of the photogrammetric survey especially for terrestrial acquisition, is not always ensured due to limited accessibility of the target object and the presence of occlusions. To solve these problems, we propose a different image acquisition strategy and we test different geo-referencing scenarios to deal with the practical issues of a terrestrial photogrammetric survey. The proposed photogrammetric survey procedure is based on the acquisition of a sequence of images in panorama mode by rotating the camera on a standard tripod. The offset of the pivot point from the projection center prevents the stitching of these images into a panorama. We demonstrate how to still take advantage of this capturing mode. The geo-referencing investigation consists of testing the use of directly observed coordinates of the camera positions, different ground control point (GCP) configurations, and GCPs with different accuracies, i.e. artificial targets vs. natural features. Images of the test field in a low-slope hill were acquired from the ground using an SLR camera. To validate the photogrammetric results a terrestrial laser scanner survey is used as benchmark.


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