It is my pleasure to thank all those who helped me and made my project work a success. I would like to thank my parents who made this research possible and for extending their moral support and patience. I like to thank the Principal of our Institution, Prof. Parvardhavardhani Gopalakrishnan as well as the Project coordinator, Prof. Y.G. Tharakan, for all the patience and guidance provided to me throughout the dissertation period. I take this opportunity in expressing the…
In my observation of a Kindergarten class, there were many different teaching methods used. The teacher used many visual aids, and example would be when she asked the students to draw a pig. She displayed a pig on the board that was drawn by a guest speaker, and the students were asked to replicate the drawing. The teacher I observed also used games to enhance the student’s learning. The games were not meant to be competitive, but simply there to help the students with thing such as…
from the human body. With improvement of previous processes, the human body needs to keep a relatively stable internal environment, known as homeostasis. This crucial ability of the body consists of three components support the control mechanism; the receptor, the control center, and the response. Positive feedback is one of the two loops of homeostasis and, it is the enhancement or amplification of the original stimulus by an output. This cyclic feedback continues to amplify the body’s response…
aid(t).New position and velocity of agents in each dimension could be found with calculated acceleation (Fig. 1).In this way, the GSA could present the heaviear mass or the best fitness value in the search space.
In this paper, a FLC is designed to control the convergence speed of a GSA in LPO. It is obvious that the acceleration of the agents depends on the α in G (Eq. (3)). The FLC tries to a modification in population diversity and approach progress with controlling the α.
The joints had to be such that they can be loosened and tightened at any required configuration, this obstacle was overcome by the use of wing nut at the end of the screw instead of a normal nut, and the image below shows the wing nut and bolt.
This is the most cost effective yet strong way of locking the joints compared to knobs and other clamp mechanisms.
For the Robot Arm Construction our group members had a variety of materials to choose from, these materials…
Motor & Gearbox
The mirrors are required to rotate specific angles. To be able to achieve specific angles we need a stepper motor. The stepper motor is known to divide one revolution into equal steps which is our main requirements for the rotation of the mirrors.
Figure 2-13: The Stepper Motor
The following table shows the stepper motor specifications:
Table 2-1: Stepper Motor Specifications
Current 4.2 A
Torque 8.34 N.m
The desired torque calculated to withstand the mirror…
Development of Feed Forward Control model in Simulink
To implement feed forward control. Firstly, the transfer function of the linear DC Motor model has to be obtained. Actually in our case, the input of the plant is current so the transfer function of the mathematical model in ratio of angular velocity to current has to be obtained. It is given by:
G(s)=Ω_1/I_a =R_A/K_M 1/(T_e s+1)
where T_e=(J_meq R_A)/(K_m Cϕ) is electro-mechanical time constant.
The feed forward control could be…
Student: I didn’t do so well on the division of fractions assessment. I want to complete a retake tomorrow.
Teacher: Tomorrow will work well. Be sure to get a division of fractions remedial sheet from the folder on the counter. The sheet includes important re-teaching points as well as practice problems to help you prepare for the retake.
Student (After completing retake assessment): I don’t think I did well because this isn’t the same assessment. The numbers in the problem are different.…
Are Reachers Worth “Reaching” For?
By: Jennifer Alexander, Megan Pearce, and Lisa Browne
Mechanical reachers are pieces of equipment recommended for people with decreased grip strength or range of motion. In a way, they act as an extension of one’s own arm. The purpose of a reacher is to benefit people who have disabilities and increase independence and improve their quality of life. Reachers allow people to access items that are just out of grasp, whether it be above or below. This group of…
The results focus on the effect of the personalized mus- cle geometry on the force generation in the lower limb. DistMo defines the model personalized with the PA ob- tained with the straight line approach, while CenMo describes the model personalized with the PA obtained with the centroid line approach. GenMo represents the model that used the generic values of the PA from OpenSim (PARF = 13.9◦, PAV I = 4.5◦, PAV L = 18.4◦,
PAV M = 29.6◦). The inter-model force and moment variations…