tender for control system laboratory kits - 1 p, pi and pid controllers nsimulated blocks – dead time ( transportation lag ) , integrator, time constants, error detector and gain • pid controller ( configurable as p, pi, pd or pid ) proportional band: 5% to 50% ( gain 2-20 ) integral time: 10msec - 100msec derivative time: 2-20msec • built-in signal sources set value: -1v to +1v square wave: 1v p-p ( min. ) at 40hz ( typical ) triangular wave: 1v p-p ( min. ) at 40hz ( typical ) , built-in 3½ digit dvm for d.c. measurements • built-in ic regulated power supply n n 2 instrumentation amplifier trainer kit nwith two variable power supply. n n 3 lag-lead compensating network n* this unit consists of an ac signal source from 100 hz to 10 khz. n*amplitude can be varied from 1v to 10v p-p. n* electrical lead-lag network consists of different components. n*a digital voltmeter to record input voltage, output voltage and than gain. n* a digital phase angle meter indicates the angle by which phase lead / lags. n*all the components are enclosed in a powder coated ms box. n*terminals of each component are brought out to front panel with printed. n* expt will be conducted by interconnecting each component externally. experiments: to draw frequency response of a given lag-lead compensator. n n 4 ac position control nangle command ( continuous ) : obtained through a potentiometer with a calibrated dial attached. the potentiometer is supplied with a 5 volt, 50 hz source. n• angle command ( step ) : available through a toggle switch. automatic synchronisation with waveform capture circuit is provided so that the step response is stored properly. 2.2 motor unit the position control is achieved through a good quality 2-phase a.c. gear motor. the specifications of the motor are : n• operating voltage : 12v rms 50 hz per phase. n• phase current : 1.2 amp. ( approx ) n• rated speed : 90 rpm n • torque ( basic ) : 750 gm-cm ( approx. ) angular position of the motor shaft is sensed by an identical 360° rotation potentiometer attached to it, which is connected to the same 5v, 50 hz source as that used in the command potentiometer. a calibrated disk mounted on the potentiometer indicates its angular position in degrees. n 5 dc position control system: nfeatures & specifications: nposition control of a 12v, 1a d.c. gear motor ( 50 rpm ) nprovision for positive and negative tachogenerator feedback tacho constant: 2v / 1000 rpm approximately calibrated dials for reference and output position: resolution 1° servo-potentiometers with full 360° rotation mp based waveform capture / display card built-in 3½ digit dvm for signal measurements built-in step signal and ic regulated power supplies for electronic circuits separate unit for motor in a see-through cabinet 220v±10%, 50hz mains operation literature and patch cords included essential accessories - a cro n