Brushless DC electric motor

To assure the effective performance of controller over wide range of system operations and to increase the transient stability of the system, a supplementary fuzzy logic controller (FLC) based on the Mamdani's fuzzy inference method is designed for the PI controller input. FLC generates the required small change for voltage to control the magnitude of the injected voltage. The centroid defuzzyfication technique is used is this fuzzy controller. The below fig describes the FLC structure. In this…

image processing. This is done by employing a Raspberry Pi development board and the convex hull method. The power source is a 230 V AC supply which is being converted to 12 V AC and then to DC using a rectifier circuit. This is powering the relay circuit that is being employed. A robotic arm with 2 active motors has been used to demonstrate the plenty applications that this technology could be used for. The Raspberry Pi was adopted as the environment for the above project because of its sheer…

Microhardness and microstructural analysis of friction stir welded AA5052-H34 joints B. Magamai Radja,* and T. Senthilvelana aDepartment of Mechanical Engineering, Pondicherry Engineering College, Pondicherry University, Puducherry 605 014, India Abstract Friction stir welding a novel solid state welding which gains momentum in versatile applications viz., aerospace, marine, defense equipments and automobile industries. In the present work, AA 5052-H34 weldments have been prepared by FSW…

section, the static analysis, forward kinematics and inverse kinematics for the manipulator arm will be discussed. A. Static Analysis The static analysis is very significant in manipulator’s design to roughly approximate the required torques from each motor. In our design, it is important to check the stability of the quadcopter that the manipulator is integrated on it in terms of manipulator arm center of mass shifting as function of joint angles; as mentioned before the excessive shifting of…

The Husqvarna LC221A features the All Wheel 4X4 drive in this 3-in-1 model which provides excellent power and features at an affordable price. The Husqvarna LC221A is powered by a 150cc Briggs And Stratton 625ex Series 4-Cycle Engine which is incorporates the Briggs & Stratton ReadyStart® starting system. No prime and no choke required, just pull the cord for power. This engine is lighter in weight which makes it easier to maneuver the mower. It also reduces noise levels and has less vibration…

Pop filters When recording vocalists, you will most definitely need to place a pop filter between the singer and vocal mic. A pop filter will cut down on the mini-explosions of air that happen when a singer says “B” or “P”. Don’t ever leave this job for a compressor down the line. Pop filters also serve the secret purpose of blocking all spit spray from reaching your prized vocal mic. It is not uncommon to find studios stacking two pop filters depending on the singers style. Here are a couple of…

Activity 3: Bullroarers Lesson Objective: Students will simulate the function a propeller by creating an ancient signaling device known as a bullroarer. Set-Up: Each student will need one craft stick, one index card, one rubber band and 2 paper clips. Groups of students can share measuring tape, string, markers and masking tape. Demo and discussion: Bullroarers have been used by many cultures, throughout many continents, for thousands of years. Anthropologists, scientists who study ancient…

and maintenance. High purchasing price; Lower operating cost and good energy saving which cut down operating cost. Table 2 summary of comparison between PM and induction machines losses in electric machines To investigate the efficiency of the machine, an essential part is to evaluate the losses in the motor. Losses in the machine is determined by the structure and working condition. Losses in the machines can generally be divided into two groups: electrical losses and mechanical losses.…

discuss these motors further when we get to the topic of DC motor control. * Unipolar motors, with two center-tapped coils which can be treated as four coils (see Figure One-b). These have six or eight (or sometimes five) wires, and can be controlled from a microprocessor with little more than four transistors (see Figure Two). Figure One. (a) The internal arrangement of the coils for a bipolar stepper motor. (b) The internal arrangement of the coils for a unipolar stepper motor. Wires…

3.3 MUFFLER A muffler is a device for decreasing the amount of noise emitted by the exhaust of an internal combustion engine. Muffler ssignificantly attenuating noise output from the engine. Purpose of Muffler: Performance mufflers have three goals for perfect operation. To absorb and dissipate. To move exhaust gasses, To maintain power and performance of the engine while achieving the first two goals. About Exhaust Noise Sound is simply a vibration that spreads as a wave through air. This…