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barcode reader code in asp.net A fourpole twophase brushless dc motor is driven in Software
182 A fourpole twophase brushless dc motor is driven QR Code Decoder In None Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications. Paint Quick Response Code In None Using Barcode encoder for Software Control to generate, create QR image in Software applications. by a mechanical source at n = 3600 rev/min The
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Printing Code 39 Full ASCII In None Using Barcode drawer for Software Control to generate, create Code 3 of 9 image in Software applications. Make EAN / UCC  13 In None Using Barcode creator for Software Control to generate, create EAN / UCC  13 image in Software applications. shorten the trapezoidal speed pro le cycle time by accelerating the motor to a maximum speed of 1,800 rev/min If we still allow 1 s for acceleration and deceleration, how long will the cycle time be Print Code 128 In None Using Barcode creation for Software Control to generate, create USS Code 128 image in Software applications. Drawing Barcode In None Using Barcode printer for Software Control to generate, create barcode image in Software applications. phase coils are excited in sequence by means of a logic circuit Find a The logic schedule for fullstepping of this motor b The displacement angle of the full step Leitcode Encoder In None Using Barcode encoder for Software Control to generate, create Leitcode image in Software applications. EAN128 Creation In None Using Barcode generation for Office Word Control to generate, create UCC128 image in Microsoft Word applications. 184 With reference to the triangular speed pro le of
Draw ECC200 In Java Using Barcode generation for Java Control to generate, create DataMatrix image in Java applications. Data Matrix Printer In Visual Basic .NET Using Barcode generation for .NET framework Control to generate, create DataMatrix image in .NET framework applications. Figure P184, determine the trapezoidal speed pro le required to move a load 05 m in 3 s
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Phase 2
Phase 4
Figure P1811
T1 T2 Time (s) 1812 A PM stepper motor is designed to provide a
Figure P184
Section 2: Step Motors 185 With reference to Example 184, design a logic
circuit that uses the logic design principles of s 13 and 14 to achieve the step sequence given in Table 184 [Hint: use a counter and logic gates] fullstep angle of 15 Find the number of stator and rotor poles 1813 A bridge driver scheme for a twophase stepping motor is shown in Figure P1813 Find the excitation sequences of the bridge operation ( ll in the blanks of the table) 186 A PM stepper motor has six poles and a bipolar
supply (ie, the current into each coil pair can be either positive or negative) Figure 189 depicts a fourpole stepper motor as an example; the motor described in this problem has two additional poles The spacing between the poles is uniform Determine the size of the smallest achievable step in degrees S1 VB S2
S3 Phase 1
S7 Phase 2
187 Derive the dynamic equation for a stepping motor
coupled to a load The motor moment of inertia is Jm , the load moment of inertia is JL , the viscous damping coef cient is D, and motor friction torque is Tf Clock state S1 S2 S3 S4 S5 S6 S7 S8 Reset 1 2 3 4 5 6 7 8
188 Sketch the rotorstator con guration of a hybrid
stepper motor capable of 18 steps [Hint: The rotor will have ve teeth] the stepping motor binary sequence of Check Your Understanding Exercise 187 189 Use a binary counter and logic gates to implement 1810 A twophase permanentmagnet stepper motor has 50 rotor teeth When the rotor is driven by an external mechanical source at = 100 rad/s, the measured open circuit phase voltage is 25 V, peaktopeak Calculate If ia = 1A and ib = 0, express the developed torque Assume the winding resistance is 01 Figure P1813
1814 A permanentmagnet stepper motor with a 15
step angle is used to directly drive a 0100 in lead screw Determine: 1811 The schematic diagram of a fourphase, twopole
PM stepper motor is shown in Figure P1811 The
Part III
Electromechanics
a The resolution of the stepper motor in steps/revolution, b The distance the lead screw travels (in inches) for each 15 step of the stepper motor, c The number of full 15 steps required to move the lead screw and the stepper motor shaft through 175 revolutions, and d The shaft speed (in rev/min) when the stepping frequency is 220 pps a The stator current b The mechanical power c The rotor speed
1821 A 1 hp, fourpole, 110V, 60Hz singlephase 4
induction motor has the following data: RS = 186 RR = 356 Xm = 535 XS = 256 XR = 256 s = 005
Section 3: SinglePhase AC Motors 1815 Determine whether the following motors are
integral or fractionalhorse power motors: a 3 hp, 900 rev/min 4 b c d 1 1 hp, 3,600 rev/min 2 3 hp, 1,800 rev/min 4 1 1 2 hp, 6,000 rev/min Find the mechanical power output
1822 A onephase, 115V, 60Hz, fourpole induction
motor has the following parameters: RS = 05 RR = 025 Xm = 35 Find the input current and developed torque when the motor speed is 1,730 rev/min XS = 04 XR = 04 1816 The spatial uctuation of the stator mmf F1 is
expressed as F1 = F1(peak) cos where is the electrical angle measured from the stator coil axis and F1(peak) is the instantaneous value of the mmf wave at the coil axis and is proportional to the instantaneous stator current If the stator current is a cosine function of time, the instantaneous value of the spatial peak of the pulsating mmf wave is F1(peak) = F1(max) cos t where F1(max) is the peak value corresponding to maximum instantaneous current Derive the expression for F1 , and verify that for a singlephase winding, both forward and backward components are present 1817 A 200V, 60Hz, 10hp singlephase induction motor operates at an ef ciency of 086 and a power factor of 09 What capacitor should be placed in parallel with the motor so that the feeder supplying the motor will operate at unity power factor 1818 A 230V, 50Hz, twopole singlephase induction motor is designed to run at 3 percent slip, Find the slip in the opposite direction of rotation What is the speed of the motor in the normal direction of rotation 1819 Determine the amount of time (in seconds) it will take for a stepper motor with a 15 step angle, operating in onephase excitation mode, to rotate through 28 rev when the pulse rate is 180 pps Note: t = / 1820 A 1 hp, 110V, 60Hz, fourpole capacitorstart 4 motor has the following parameters: RS = 202 RR = 412 Xm = 668 Find XS = 28 XR = 212 s = 005

