Control theory

optimization in future. Other renewable technology can be analyzed for the same system and cost comparison is one of the best work that can be done in view of market potential. The impact of DFIG i.e. doubly fed induction generator and different controls of wind turbines can be studied as integration of these combinations can make the system more…

There are three novels that had an argument about their experiences dealing with education. Those three novels were “Kenyon Commencement Address” by David Foster Wallace, “How Teachers Make Children Hate Reading” by John Holt, and “Why Colleges Shower Their Students with A’s” by Brent Staples. These authors had their own opinions or experiences with education that they didn’t agree with. David Foster Wallace believes a person tries to adjust their natural settings and alter the selfish thoughts…

Locking mechanism 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. Materials For the Robot Arm Construction our group members had a variety of materials to choose from, these materials…

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. Nomenclature t…

Dimension: Quality of Feedback Focus of dimension: Assesses the degree to which the teacher provides feedback that expands learning and understanding and encourages continued participation. Summary of strengths: Scaffolding: There were a few examples of teachers providing children with the necessary help to allow them to succeed or complete a task. For example, a child was having difficulty opening up a cheese wrapper. The teachers provided assistance by giving verbal (push it up, hold it…

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.…

Results 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…

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…

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…

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 Angle 1.8° Torque 8.34 N.m The desired torque calculated to withstand the mirror…