Motor vibrations

One can further investigate the volume increase by using a model experiment for the particle movement of gases. The instrument for kinetic gas theory , which sets small steel spheres in movement in a see-through cylinder, shows a larger volume of moving spheres by increasing the movement frequency of the spheres. This model however has to be discussed in two respects 1. the gas particles move independently and need no vibration motor in order to move,... 

Test performance of electronics on body Determine adequate vibrations for tbe body Analyse effect of vibrations on body Placement of sensors and vibration motors Medical sportswear shop... 

Ito and Komori used a vibration technique for promoting fluid mixing and a chemical reaction in a microchannel [34]. Instantaneous velocity and concentration fields are measured using p-PIV and p-LIF techniques, respectively, whereas the concentration measurement takes place in a non-reacting flow with the dye Rhodamine B. The effects of mechanical vibration on mixing and reaction were experimentally examined. The fluids were oscillated by a small vibrating motor through two... 

Vibration Vibratory angioedema 0.5-1 min 1 Vibrating motor (vortex)... 

Toward the objective of the research, vibrotactile feedback is chosen in order to guide visually impaired people. Considering clothing system requirements and ultrasonic sensor power requirements, the type of vibration motor is selected. In order to... 

Figure 3.5 Vibration motor integrated to woven fabric to attach over hip bone area of the garment.

To integrate a vibration motor to textile structures as well as to form an electric circuit in the structure, silver-plated nylon yam with a linear resistance of <50 n/m and with a yarn count of 312/34f x 4 dtex is used. To prevent formation of short circuits in the textile-based electric circuit, conductive yams are again hidden into the stmcture with a double-woven fabric constmction as shown in Fig. 3.2. The fabric stmcture with vibration motor integrated is shown in Fig. 3.5. 

The whole smart shirt electrical circuit is designed mainly considering multiconnection of ultrasonic sensors as discussed in Section 3.3.1.4. Therefore, the schematic circuit concept of vibration motors, ultrasonic sensor, and microcontroller will first be introduced and then the schematic diagram of the whole smart shirt circuit will be given in detail. 

Fig. 3.6 shows the schematic circuit diagram of Ardunio LUyPad Vibe Board [7]. Here the GND pin of the each vibration motor is connected with the GND of the circuit. The Vcc pin of the each vibration motor is connected with the microcontroller digital outputs. 

The total removable parts for sensor and actuator connections are shown in Fig. 3.11. There are four sensors and eight vibration motors integrated to woven fabrics as described in Section 3.3.1.4. The connection of these removable parts to a main circuit in the base stracture of the interactive garment is provided by snap fasteners. 

Finally, a smart shirt with its removable parts is shown in Fig. 3.13. Sensors are positioned in front of the garment under the breast zone. Vibration motors are positioned over the wrist and hip bone area of the garment. Microcontroller and batteries are positioned along the vertical centerline of the garment. 

Parts for ultrasonic sensors, vibration motors, and batteries are designed to be attached from the inner side of the garment, and, thus, they are not visible when they are attached. However, only the microcontroller is visible on the garment when attached. In this way, the user can open and close the system easily via a button on the microcontroller. 

In order to test the system s reaction in case of obstacles during movement, the experimental set-up seen in Fig. 3.31 is used. For instance, an intelligent garment worn by the mannequin is moved with a speed of 0.6 m/s toward an obstacle (see Fig. 3.32). When the mannequin is between 3 and 2.5 m away from obstacle, there is no actuation on the vibration motors that means go straight position (Z). 

However, in the first case (Fig. 3.33(a)), when the mannequin reaches a distance of 2.5 m away from an obstacle located on the left side, only the first vibration motor on the right arm acts in order to satisfy warning action. The other vibration motors do not show any vibrations until reaching a distance of 1.25 m away from the obstacle. On the... 

Other hand, during the movement along 1.25 m and 15 cm, in addition to the first vibration motor, the second vibration motor on the right arm also shows vibration in order to present the proximity of the obstacle (see Table 3.3). Signals over the conductive yams measured by the oscilloscope at the point of connection with first, second, and third vibration motors on the left and right arms during the movement toward an obstacle located at the left side are shown in Fig. 3.33. 

Figure 3.33 Measured signals over the first, second, and third vibration motors on the left and right ams during the movement toward an obstacle located at the left.

Vibro-flotation the surrounding soil is compacted with a horizontally vibrating motor attached to the end of the probe, sometimes aided by water sprayed from the nozzle tip end. 

Anti-vibration motor mountings Impaction vanes Drum Clip-on lid... 

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