Robotics 2 E Part 4 ppt

... pressure in the receiver 1, T r = absolute temperature of the air in the receiver, 3.3 Electric Drives 87 and its expansion into a Fourier series becomes where r is the torque ... drive, one which must reduce the speed of a moving element until complete cessation of movement of the element is achieved, i .e. , a brake system. Such a mechanism must be able...

Ngày tải lên: 11/08/2014, 21:22

... opposite partition E, which has two channels 1 and 2. The pressure difference between these channels depends upon the position of the edge of the nozzle D relative to the inlets of ... i m 2 FIGURE 3E- 4a) the time needed to achieve a speed of the piston V= 2m/sec when the height of the mass increases; find the distance travelled by the piston. At th...

Ngày tải lên: 11/08/2014, 21:22

... illustrated by examples presented in Figures 7 .48 and 7 .49 . Here we use both the differences between the mass and geometrical centers of the details and their specific shapes. These ... to its other side. Thus, every part is handled and sooner or later achieves the desired orientation. Often the difference between the geometrical center and the center...

Ngày tải lên: 11/08/2014, 21:22

... exoskeleton; i .e. , the driver moves his limbs and the vehicle repeats these movements. Such a vehicle becomes more cumbersome as the number of legs is increased. A four-legged ... barometers are useful, for instance, in meteorological probing of the upper layers of the atmosphere). The two membranes are sealed hermetically connected along the perimeter. Th...

Ngày tải lên: 11/08/2014, 21:22

... into special vessels, keeping the vessels upright, and putting them in definite places. Both FIGURE 1.10. Kinematic example of a three- degrees-of-freedom teleoperator (see Figure 1.9). 12 ... prob- lems being tackled in the development of modern robotics. Sensitive elements able to gauge the forces, texture, or response of objects to be handled have still to be...

Ngày tải lên: 11/08/2014, 21:22

... devices). Rigorously coordinated displacements between remotely located elements are problematic. Spatially oriented displacements of different elements require specially costly means. ... serve to prevent collisions between tools or between kinematic elements and when precisely defined can be reduced. Reducing the auxiliary times can be a very effective way of raising...

Ngày tải lên: 11/08/2014, 21:22

... the system via either a special spring or the membrane itself. The higher the measured forces, pressures, or acceleration, the less accurate are the measured values. However, ... temperature t Q , and after it passes the heater its temperature rises to the value (t 0 + At). These temperatures are registered by thermoresistors (or other temperature ... pe...

Ngày tải lên: 11/08/2014, 21:22

... with one axis of symmetry. 24 6 Feeding and Orientation Devices FIGURE 7 . 24 Vibrofeeder. General view. FIGURE 7 . 24 a) General view of a vibrofeeder with its controller. This device is ... of the springs. The device is usually designed so as to be close to res- onance conditions. However, this makes the feeder very sensitive to minor differences between t...

Ngày tải lên: 11/08/2014, 21:22

... figure). The interactions between these fields move the rings together in the manner shown in part d) of Figure 8 .28 until they come into the assembled state, as in part e) . The ... assembling, use either cases c) or d), where the design is symmetrical, or case e) , where the asymmetry is emphasized to make the difference A large enough for conveni...

Ngày tải lên: 11/08/2014, 21:22

... shows the results of experimental measurements where the elongations L/L Q versus the weight lifted by the muscle for different inflation pressures were determined. These charac- teristics ... transmission. The latter are suspended freely on joints between links 2- 3, 3 -4, and 4- 5. In the same manner, cylinder C 2 pushes rods 25 and 24 . The latter mov...

Ngày tải lên: 11/08/2014, 21:22