The openloop transfer function of a ufb control system is
The position, velocity and acceleration error constants are respectively
The openloop transfer function of a unit feedback system is
The position, velocity and acceleration errorconstants are respectively
If a type 0 system is subjected to step input, what is its effect on steady state error?
The forwardpath transfer function of a unity feedback system is
The system has 10% overshoot and velocity error constant K_{v} =100.
The value of a is
For the system shown in fig.the steady state error component due to unit step disturbance is 0.000012 and steady state error component due to unit ramp input is 0.003. The values of K_{1} and K_{2} are respectively
If R (s) = 0
Error in output due to disturbance
Error due to ramp input
The transfer function for a single loop nonunity feedback control system is
The steady state error due to unit step input is
E(s) = R(s)  C(s) H(s)
For the system of fig. the total steady state error due to a unit step input and a unit step disturbance is
where and
The forward path transfer function of a ufb system is
If a unit ramp is applied, the minimum possiblesteadystate error is
Using RouthHurwitz Criterion, system is stable for 0 < K < 2000
The forwardpath transfer function of a ufb system is
The system has r(t) = t^{3} applied to its input. Thesteady state error is
Consider a unity feedback system with forward transfer function given by
The steadystate error in the output of the system for a unitstep input is _________ (up to 2 decimal places).
A system has position error constant K_{p }= 3. The steady state error for input of 8tu(t) is
System is zero type
The forward path transfer function of a unity feedback system is
For input of 60u(t) steady state error is
For ufb system shown in fig. the transfer function is
If input is 30t^{2} , then steady state error is
The forwardpath transfer function of a ufb control system is
The steady state errors for the test input 37tu(t) is
In the system shown in fig. r(t) = 1 + 2t , t > 0. The steady state error e(t) is equal to
The system is type 2. Thus to step and ramp input error will be zero.
A ufb control system has a forward path transfer function
If the system is subjected to an input r(t) = 1 + t + 1/2 t^{2} , t > 0the steady state error of the system will be
Correct Answer : C
Explanation : R(s) = (1/s)+(1/s^{2}) + (1/s^{3})
E(s) = R(s) / {1 + G(s)} = 1/10s
ess = lim sE(s) = 0.1
The system shown in fig. has steadystate error 0.1 to unit step input. The value of K is
Block diagram of a position control system is shown in fig.
If K_{t} = 0 and K_{a}= 5, then the steady state error tounit ramp input is
Block diagram of a position control system is shown in fig.
If the damping ratio of the system is increased to 0.7 without affecting the steady state error, then thevalue of K_{a }and K_{t} are
The equivalent openloop transfer function
A system has the following transfer function
The type and order of the system are respectively
The s has power of 4 and denominator has order of 7. So Type 4 and Order 7.
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