Robotics 2 E Part 3 docx

... 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

... 5 38 12 29 18 41 8 5 38 13 32 21 44 8 6 43 14 32 21 44 9 6 43 16 41 22 59 9 8 57 18 44 29 67 10 8 60 19 51 29 73 11 10 70 20 51 29 73 11 10 70 22 57 32 83 13 10 76 24 64 33 92 13 10 84 26 70 35 ... 70 20 3 30 29 197 54 140 70 20 3 30 29 197 57 146 76 21 6 32 30 20 6 64 159 95 24 1 44 32 222 70 20 3 121 27 3 60 41 28 6 Triangular Plate Referre...

Ngày tải lên: 11/08/2014, 21:21

... 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

... 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 ... selected. (Because resistance welding depends on the specific electrical resistance of the materials being treated, bronze obviously has a lower resis- tance than steel. The lower .....

Ngày tải lên: 11/08/2014, 21:22

... 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 ... 34 0°K s 2 = 2. 40 meters, [f2] T 3 = 400°K s 3 = 2. 76 meters. [f3] 3. 3 Electric Drives 83 When there is no resistance torque, i .e. , a v = a 2 = 0 we obtain For th...

Ngày tải lên: 11/08/2014, 21:22

... cases the rest of the parameters stay unchanged.) FIGURE 3E- 6a) FIGURE 3E- 7 Exercises 1 13 Calculate the time needed to lift the mass (for both cases separately) from the moment ... 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 in...

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

... otherwise shaped, identical ends (examples 2, 3, 7). These parts have only one degree of freedom orientation. Indeed, one must bring the symmetry axis of the part in line with one ... usually designed so as to be close to res- onance conditions. However, this makes the feeder very sensitive to minor differences between the excitation and natural frequencies. The...

Ngày tải lên: 11/08/2014, 21:22

... flat details due to the difference between the center of mass and the geometric center. 27 0 Feeding and Orientation Devices FIGURE 7. 53 Active orientation of needle-like details. FIGURE ... 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 cente...

Ngày tải lên: 11/08/2014, 21:22

... the upper end of the tray is used to remove the defective aneroids. Only aneroids that pass this gate reach the selection process. Here, according to remembered value S 2 , 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 convenient...

Ngày tải lên: 11/08/2014, 21:22