Knowee
Questions
Features
Study Tools

The open loop transfer function of unity feedback, underdamped 0 system is given as: G(s) = K/(s(1 + Ts)) Find the values of K and T, if the Maximum Peak Overshoot of a closed loop step response is restricted to be below 110% (Mp = 0.1) of the steady state value and the settling time (within 2% band) should not exceed 0.2 seconds. Show how these constraints can be attained with the help of location of the complex-conjugate pole-pair on s-plane and shade the region of s- plane which satisfies the constraint.

Question

The open loop transfer function of unity feedback, underdamped 0 system is given as: G(s) = K/(s(1 + Ts)) Find the values of K and T, if the Maximum Peak Overshoot of a closed loop step response is restricted to be below 110% (Mp = 0.1) of the steady state value and the settling time (within 2% band) should not exceed 0.2 seconds. Show how these constraints can be attained with the help of location of the complex-conjugate pole-pair on s-plane and shade the region of s- plane which satisfies the constraint.

...expand
🧐 Not the exact question you are looking for?Go ask a question

Solution

To find the values of K and T that satisfy the given constraints, we need to analyze the open loop transfer function and the desired closed loop response.

The open loop transfer function is given as G(s) = K/(s(1 + Ts)), where K represents the gain and T represents the time constant.

To satisfy the constraint on the Maximum Peak Overshoot (Mp), we need to ensure that Mp is below 110% (0.1) of the steady state value. In an underdamped system, the Mp is determined by the damping ratio (ζ) and can be calculated using the formula Mp = exp((-ζπ)/sqrt(1-ζ^2)).

To satisfy the constraint on the settling time, we need to ensure that the response settles within a 2% band in less than 0.2 seconds.

The location of the complex-conjugate pole-pair on the s-plane affects the system's response. To satisfy the constraints, we need to choose the pole-pair location carefully.

To achieve a smaller overshoot, we need to increase the damping ratio (ζ). This can be done by increasing the value of T. By increasing T, the pole-pair moves closer to the imaginary axis, resulting in a larger damping ratio and a smaller overshoot.

To achieve a faster settling time, we need to move the pole-pair closer to the origin on the s-plane. This can be done by decreasing the value of T. By decreasing T, the pole-pair moves closer to the origin, resulting in a faster settling time.

To satisfy both constraints, we need to find the values of K and T that give us the desired damping ratio and settling time. By adjusting the values of K and T, we can find the appropriate pole-pair location that satisfies the constraints.

To shade the region of the s-plane that satisfies the constraints, we need to consider the range of values for K and T that satisfy the constraints. By varying K and T within these ranges, we can determine the shaded region on the s-plane.

Please note that the specific values of K and T that satisfy the constraints cannot be determined without further information or calculations.

This problem has been solved

Similar Questions

Given a unity feedback system that has open loop transfer function. Compute the gain value K that makes the closed-loop system have a double pole. Also compute the location of the double pole.

A unity feedback system has an open loop transfer function, G(s) =  k/s2The root locus plot isSelect one:a. Bb. Ac. Cd. D

For the unity feedback system having G(s) = ଶ଴ ሺ௦ ା ସሻ௦ ሺ௦ ା ଶሻሺ௦ ା ଵ଴ሻ .Determinei) Type of Systemii) Error coefficientsiii) Steady State error for input as 1 + 8t + ୲మଶ

Can you derive the equation of the frequency response of the closed loop control system?

Given the system of Figure 9.4(a), operating with a damping ratio of 0.174,show that the addition of the ideal integral compensator shown in Figure 9.4(b) reducesthe steady-state error to zero for a step input without appreciably affecting transientresponse. The compensating network is chosen with a pole at the origin to increase thesystem type and a zero at 0:1, close to the compensator pole, so that the angularcontribution of the compensator evaluated at the original, dominant, second-order polesis approximately zero. Thus, the original, dominant, second-order closed-loop poles arestill approximately on the new root locus.

1/1

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.