scholarly journals Analysis of the 2D motion of a monolith platform mechanism

2020 ◽  
pp. 1-9
Author(s):  
Mikołaj Czyrnek ◽  
Grzegorz Tora
Keyword(s):  
Motion Analysis ◽  
Angular Displacement ◽  
Planar Mechanism ◽  
The Real ◽  
Computation Procedure ◽  
Stepper Motors ◽  
Machine Theory ◽  
Two Stages ◽  
Classical Mechanism

This paper summarises the results of motion analysis of a platform mechanism with a monolith design. A four-link planar mechanism was engineered in which the platform positioning is effected via one passive link and two eccentric links actuated by stepper motors. The prototype of the device was fabricated following a computation procedure based on the classical mechanism and machine theory and FEM calculations. Testing performed on the model and on the real device revealed the presence of two points on the platform for which the resultant of two independent perpendicular displacements implemented by two stages can be obtained for small values of angular displacement.

scholarly journals A Real-Time Structure of Attitude Algorithm for High Dynamic Bodies

2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Xingcheng Li ◽  
Shuangbiao Zhang
Keyword(s):  
Real Time ◽  
Time Structure ◽  
Flow Diagram ◽  
The Real ◽  
Time Problem ◽  
Conventional Structure ◽  
High Dynamic ◽  
Two Stages ◽  
Better Than ◽  
Attitude Matrix

To solve the real-time problem of attitude algorithm for high dynamic bodies, a real-time structure of attitude algorithm is developed by analyzing the conventional structure that has two stages, and a flow diagram of a real-time structure for a Matlab program is provided in detail. During the update of the attitude matrix, the real-time structure saves every element of attitude matrix in minor loop in real time and updates the next attitude matrix based on the previous matrix every subsample time. Thus, the real-time structure avoids lowering updating frequency, though the multisubsample algorithms are used. Simulation and analysis show that the real-time structure of attitude algorithm is better than the conventional structure due to short update time of attitude matrix and small drifting error, and it is more appropriate for high dynamic bodies.

Motion Analysis of Human Lifting Works with Heavy Objects

2005 ◽  
Vol 17 (6) ◽  
pp. 628-635 ◽  
Author(s):  
Nobutomo Matsunaga ◽  
◽  
Shigeyasu Kawaji
Keyword(s):  
Motion Control ◽  
Motion Analysis ◽  
Real World ◽  
Control Strategy ◽  
Robot Control ◽  
Autonomous Robots ◽  
Biped Robot ◽  
Weight Lifting ◽  
The Real ◽  
Lower Back

Advances in robot development involves autonomous work in the real world, where robots may lift or carry heavy objects. Motion control of autonomous robots is an important issue, in which configurations and motion differ depending on the robot and the object. Isaka et al. analyzed that lifting configuration is important in realizing efficient lifting minimizing the burden on the lower back, but their analysis was limited to weight lifting of a fixed object. Biped robot control requires analyzing different lifting in diverse situations. Thus, motion analysis is important in clarifying control strategy. We analyzed dynamics of human lifting of barbells in different situations, and found that lifting can be divided into four motions.

FACE REPRESENTATION WITH GRADIENT ORIENTATIONS AND EULER MAPPING: APPLICATION TO FACE RECOGNITION

2014 ◽  
Vol 28 (08) ◽  
pp. 1456014 ◽  
Author(s):  
ZHAOKUI LI ◽  
LIXIN DING ◽  
YAN WANG ◽  
JINRONG HE
Keyword(s):  
Face Recognition ◽  
Imaginary Part ◽  
Feature Vector ◽  
Low Frequency ◽  
Subspace Learning ◽  
The Real ◽  
Face Representation ◽  
Central Pixel ◽  
Low Dimensional ◽  
Two Stages

This paper proposes a simple, yet very powerful local face representation, called the Gradient Orientations and Euler Mapping (GOEM). GOEM consists of two stages: gradient orientations and Euler mapping. In the first stage, we calculate gradient orientations of a central pixel and get the corresponding orientation representations by performing convolution operator. These representation results display spatial locality and orientation properties. To encompass different spatial localities and orientations, we concatenate all these representation results and derive a concatenated orientation feature vector. In the second stage, we define an explicit Euler mapping which maps the space of the concatenated orientation into a complex space. For a mapping image, we find that the imaginary part and the real part characterize the high frequency and the low frequency components, respectively. To encompass different frequencies, we concatenate the imaginary part and the real part and derive a concatenated mapping feature vector. For a given image, we use the two stages to construct a GOEM image and derive an augmented feature vector which resides in a space of very high dimensionality. In order to derive low-dimensional feature vector, we present a class of GOEM-based kernel subspace learning methods for face recognition. These methods, which are robust to changes in occlusion and illumination, apply the kernel subspace learning model with explicit Euler mapping to an augmented feature vector derived from the GOEM representation of face images. Experimental results show that our methods significantly outperform popular methods and achieve state-of-the-art performance for difficult problems such as illumination and occlusion-robust face recognition.

On Linkage and Revaluation

1980 ◽  
Vol 15 (1) ◽  
pp. 79-105 ◽  
Author(s):  
Israel Gilad
Keyword(s):  
Tort Law ◽  
Breach Of Contract ◽  
The Real ◽  
Second Stage ◽  
Whole Process ◽  
Injured Party ◽  
Compensation For Damage ◽  
Definition Of ◽  
Two Stages

The breach of contract or commission of a civil wrong gives rise to a right of the injured party to compensation for damage caused by the violation of his right. In principle, the amount of money to be received as compensation is determined in two stages: the first stage is the establishment of the real scope of the compensable damage, i.e. the definition of the loss or detriment with respect to which the victim is entitled to compensation; the second stage is the monetary assessment of the compensable damage—translating the loss or detriment into monetary units which will reflect the financial value of such loss or damage. The whole process is governed by the higher principle ofrestitutio in integrum, i.e. restoring the victim to his former position, which in the field of tort law means restoration of the victim to his position prior to the commission of the tort, and, in the field of contracts, means bringing him to the situation in which he would have been had the agreement been honoured.

Degrees of Separation in the Phaedo

Phronesis ◽  
2003 ◽  
Vol 48 (2) ◽  
pp. 89-115 ◽  
Author(s):  
Michael Pakaluk
Keyword(s):  
The Body ◽  
Substance Dualism ◽  
The Real ◽  
Textual Evidence ◽  
Famous Argument ◽  
Two Stages ◽  
Immortality Of The Soul ◽  
Do So

AbstractIt can be shown that, if we assume 'substance dualism', or the real distinctness of the soul from the body, then the standard objections to the Cyclical Argument in the Phaedo fail. So charity would presumably require that we take substance dualism to be presupposed by that argument. To do so would not beg any question, since substance dualism is a significantly weaker thesis than the immortality of the soul. Moreover, there is good textual evidence in favor of this presumption. A closer look at the immediately preceding passage, viz. "Socrates' Defense", reveals an argument for a real distinction between soul and body, not unlike Descartes' famous argument, based on the identification of an activity in which the soul can in principle engage on its own, without assistance from the body. The argumentative project of the Phaedo, on this reading, becomes: given that the soul is really distinct, show that it is immortal. And Plato aims to do this in two stages. The three initial arguments are meant to establish merely the minimal claim that the continued existence of the soul across cycles of reincarnation is the most plausible view to take, given substance dualism; and it is left to the Final Argument to argue for something that we might regard as immortality, that is, the imperishability of the soul, come what may.

scholarly journals A Dynamic Model for Simulating Elephant-Lifting by Using a Tilting Frame

2020 ◽  
Vol 24 (5) ◽  
pp. 195-206
Author(s):  
Komsan Mianpet ◽  
Satjarthip Thusneyapan
Keyword(s):  
Dynamic Model ◽  
Motion Analysis ◽  
Standing Position ◽  
Displacement Velocity ◽  
The Real ◽  
Mechanism Model ◽  
Experimental Ethics ◽  
The Cost ◽  
Multi Body ◽  
Body Dynamic

A rigid multi-body dynamic model of an elephant was developed for motion analysis during tilt-lifting. The elephant lifting to standing position is required by veterinarians to perform surgery and bedsores treatment. The elephant mechanism dynamic model (EMDM) was developed by simplifying the skeleton to simple straight linkages connected by joints. The model consisted of 10 bones and 9 joints. A mechanical harness model (MHM) was developed. Two harnesses were attached to the tilt-frame mechanism model (FMM) and the EMDM; this assembly became the elephant dynamic during tilt-lifting model (EDTM). The developed EDTM permitted us to observe the displacement, velocity, and acceleration responses at any location on the elephant. The model allowed the virtual study of the motion, and avoided the real elephant testing; thus, the cost, time, and resources were reduced and no conflict with the animal experimental ethics. The simulation was found to be a valuable tool for engineers to design a suitable elephant bed. It permitted us to observe the operation, safety, and precaution of the equipment.

scholarly journals OPTIMALISASI PENGGUNAAN LEGO DALAM PEMBELAJARAN MATEMATIKA SMP UNTUK MENDUKUNG IMPLEMENTASI KURIKULUM 2013

Warta LPM ◽  
2017 ◽  
Vol 19 (2) ◽  
pp. 119-124
Author(s):  
Sri Rejeki
Keyword(s):  
Mathematics Teachers ◽  
Mathematics Teaching ◽  
Teaching And Learning ◽  
Mathematics Learning ◽  
Learning Activities ◽  
The Real ◽  
The Media ◽  
Mathematics Teaching And Learning ◽  
Two Stages ◽  
Support Students

kill about using LEGO in mathematics teaching and learning to mathematics teachers. This conducted into three stages of training and two stages of real teaching. The stages of the training were introducing the use of LEGO in mathematics teaching and learning, designing sets of teaching and learning activities using LEGO as the media, and peer teaching. The real teaching conducted in two stages of three meetings for each stages. Twelve mathematics teachers from five schools of Muhammadiyah in Surakarta were participated in this training. The teachers have technically trained with new experiences using LEGO as media in mathematics learning and have developed five sets of lesson plans for the topics of fractions, sets, proportion, linear equation with one variable, and statistics. The real teaching for the topic of fractions was conducted in two of those five schools. The results indicate the learning activities designed support students understanding and attitude in mathematics.   

Accuracy of estimating the technological and economic value of pig carcass primal cuts with an optical-needle device

2016 ◽  
Vol 96 (1) ◽  
pp. 37-44 ◽  
Author(s):  
D. Knecht ◽  
K. Duziński ◽  
D. Lisiak
Keyword(s):  
Economic Value ◽  
Longissimus Dorsi ◽  
Lean Meat ◽  
The Real ◽  
Meat Content ◽  
Precise Estimation ◽  
Current Classification ◽  
Commercial Value ◽  
Two Stages

The aim of this study was to demonstrate the possibility of using CGM-device measurements for the precise estimation of lean-meat content, the real technological and economic value of ham and loin. The experiment was carried out in two stages: the dissection (n = 136) and the industrial cutting (n = 298). Lean-meat content in carcasses was defined with a CGM device, where the thicknesses of the musculus longissimus dorsi (M2) and backfat (with the skin) (T2) were measured. The strongest correlations were achieved for the T2 measurement and the share of skin with fat or muscles in ham and loin. The strongest correlations for M2 were noted for muscle content in ham and loin. Measurements for M2 positively correlated with all the elements of the technological cutting of ham and loin, but negatively with T2 measurements, in terms of commercial value. The highest values, regardless of the point of measurement, were noted for boneless loin (loin) and ham 4D (ham). The highest estimating accuracy was noted for dissection and technological cutting of loin compared with ham. The results of the study suggest that the current classification device should be modified and improved for the evaluation of the real commercial value of the carcass.

Motion Analysis of a 2-DoF Planar Mechanism

2016 ◽  
pp. 845-854
Author(s):  
Ziming Chen ◽  
Xuedan Wei ◽  
Xiaomeng Liu ◽  
Dongliang Cheng ◽  
Peng Huang
Keyword(s):  
Motion Analysis ◽  
Planar Mechanism

scholarly journals MECHANISMS and MACHINE THEORY

2021 ◽  
Author(s):  
Mr. Stephen Leon J ◽  
Mr.Nishanth S ◽  
Dr.Rajesh Ravi
Keyword(s):  
Real Time ◽  
The Real ◽  
Introductory Course ◽  
Machine Theory ◽  
Real Time Applications ◽  
Basic Content ◽  
Synthesis Of Mechanism

This book develops the basic content for an introductory course in Mechanisms and Machine Theory. The text is clear and simple, supported by figures. Several solved practical oriented exercises problems have been included to enrich student’s knowledge on synthesis of mechanism based on the real time applications.

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