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a consider the motion control system that is shown by the block diagram in figure p637i giving examples of typical
consider the two quadrature pulse signals say a and b from an incremental encoder using sketches of these signals show
explain why the speed resolution of a shaft encoder depends on the speed itself what are some of the other factors that
describe methods of improving the displacement resolution and the velocity resolution in an encoder an incremental
an incremental optical encoder that has n windows per track is connected to a shaft through a gear system with gear
consider the following three types of photoelectric object counters or object detectors or limit switches1 through
figure p71 shows a schematic diagram of a stepper motor what type of stepper is this describe the operation of this
in connection with the phase windings of a stepper motor explain the following termsa unifi lar or monofilar windingb
the torque of a stepping motor can be increased by increasing its diameter for a given coil density the number of turns
when a phase winding of a stepper motor is switched on ideally the current in the winding should instantly reach the
consider a stepper motor that has two poles per phase the pole windings in each phase may be connected either in
some industrial applications of stepper motors call for very high stepping rates under variable load variable motor
define and compare the following pairs of terms in the context of electromagnetic stepper motorsa pulses and stepsb
a relatively convenient method of electronic damping uses simultaneous multiphase energization where more than one
briefly discuss the operation of a microprocessor-controlled stepper motor how would it differ from the standard setup
piezoelectric stepper motors are actuators that convert vibrations in a piezoelectric element eg pzt generated by an ac
what factors generally governa the electrical time constant andb the mechanical time constant of a motorcompare the
using sketches describe how pwm effectively varies the average value of the modulated signal explain how one could
for a dc motor the starting torque and the no-load speed are known which are denoted by ts and omegao respectively the
a schematic diagram for the servo control loop of one joint of a robotic manipulator is given in figure p726the motion
in some types of indirect-drive robotic manipulators joint motors are located away from the joints and torques are
in brushless motors commutation is achieved by switching the stator phases at the correct rotor positions eg at the
a brushless dc motor and a suitable drive unit are to be chosen for a continuous drive application the load has a
prepare a table to compare and contrast the following types of motorsa conventional dc motor with brushesb brushless
show that the rms value of a rectangular wave can be changed by phase-shifting it and adding to the original signal