Lab 4 Grading

Prelab: (___/40)
(A) Transfer functions and Time Constant	__/8
    V_0(s)/V_i(s) eqn			4 pts
    tau_e eqn				4 pts
(B) Transfer functions and Time Constant	__/8
    Time Domain Step response V_o(t),
    show how tau_e can be isolated	4 pts			
     calculate tau_e 			2 pts
     claculate L_a			2 pts
(C).  KV, b, c					__/8
       derive steady-state eqns 	3 pts
	average KV = 			2 pts
	b =  ,	c = 			3 pts
(D).  Omega(t) and J				__/8
 	eqn for Omega(t)		2 pts
 	explanation on how to get J 	2 tps
	J = _____Kg m2 (include a plot)	4 pts
(E).  Effect of inductance			__/8
    2nd order tf function		2 pts
    1st order tf function		2 pts
overlayed MATLAB step response for both La values	
overlayed MATLAB bode plot for both La values
					2 pts
Discussion: does inductance cause serious effects?  
What frequency ranges are the same?
					2 pts

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Lab Report: (___/90)

Part I. Calibration of Tachometer:	    (5) 
     Computing the Tachometer Gain 			___/3
     Experimental Parameters for the Tachometer. 	___/2

Part II. R_A and Back-EMF:		    (10) 
Measuring the Armature Resistance and Back-EMF		___/4
Experimental Values 					___/2
Experimental Parameters 				___/4
	
Part III. Constant and Viscous Friction Coefficients: (10) 
Measuring the constant and viscous coefficients 	___/6
Experimental Values. 					___/4

Part IV. Armature Inductance:		    (20) 
Procedure for Measuring Rs and La			___/14
Experimental Parameters					___/6
						
Part V. Rotor Moment of Inertia:	    (18) 
Procedure for measuring the moment of Inertia J		___/14
Experimental Values for J				___/4

Part VI. Conservation of Energy: 	    (12)    
    Prove that Kv=Ktau					___/6
    Prove that their SI units are equivalent		___/6

Part VII. System Transfer Function:  	    (10)
    Transfer Function จด(s)/Vi(s)			___/5

    Transfer Function จด(s)/Vi(s), 1st order approx	___/5

Part VIII. Steady-state response of non-linear system: (5)
    steady-state angular velocity for a 4 VDC Input. 	___/5


                                            ----
Total Report                                 90

Prelab                                       40
Checkout                                     20
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Total                                       150