1. The Nyquist plot of a transfer function G(s) is shown in Figure 1. (a) Suppose G has two unstable open loop poles. When G(s) is placed in a unity feedback loop, is the closed loop system stable or unstable? Explain. (b) Suppose G has one unstable open loop pole. When G(s) is placed in a unity feedback loop, is the closed loop system stable or unstable? Explain. Imaginary Axis 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 1 Nyquist Diagram -1 -2 -1.5 -0.5 0 0.5 Real Axis Figure 1: Nyquist plot for Problem 1.

1. The Nyquist plot of a transfer function G(s) is shown in Figure 1. (a) Suppose G has two unstable open loop poles. When G(s) is placed in a unity feedback loop, is the closed loop system stable or unstable? Explain. (b) Suppose G has one unstable open loop pole. When G(s) is placed in a unity feedback loop, is the closed loop system stable or unstable? Explain. Imaginary Axis 0.8 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -0.8 1 Nyquist Diagram -1 -2 -1.5 -0.5 0 0.5 Real Axis Figure 1: Nyquist plot for Problem 1.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

In the control system below, calculate the necessary control poles and PD controller parameters (Kp and KD) so that the settling time can be ts=2sec and the maximum overshoot Mp= 0.05 (5%) according to the 5% criterion.
Would it be b,d, and c? 2. Which of the following are characteristics of a closed loop control systems? Select allthat apply.a) Low sensitivity to changes in system parametersb) Higher accuracyc) Good regulation against disturbancesd) Reliabilityd) Slower response to inputs.
(c) In analyzing load torque of a drive system, several components need to be taken into consideration. State and briefly discuss each component of load torque.
In swimming pools and water tanks, the water level needs to be controlled. To manage the water level, a water level controller device is used. The aim of water level controller is to adjust water flow and improve the functioning. For the water level closed loop system shown in figure Q4, analyze the following basic components of the system: (1) Controlled variable (ii) Reference variable (ii) Comparison element (iv) Error signal (v) Control unit Hollow ball Lever Water input Pivot
For the P-only control , briefly explain changes in controller gain and offset (steady-state error) when PB (Proportional Band) (i) increases (ii) decreases
1. Consider one of the advanced driver assistance system(ADAS) called as adaptive cruise control(ACC). This system is designed for following a safe distance with front the vehicle. Answer the following questions. i) Explain how the ACC system works. What are the minimum required sensors? ii) Draw the block diagram of the ACC system. What is the refer- ence signal, what is the control signal, what is the output? iii) Discuss the controller's behavior in terms of transient, steady state response. What about the stability? If the controller is unstable, how does the ACC system behave?
5. Below which is not a statement from an open loop control system is.... a. Less stable and less preciseb. Harder to makec. Relatively little power requirementsd. Impossible to obtain on an open systeme. stability is not the main problem
Explain the criteria involved in designing a controller, elaborate the general parameters ?
Significance of Tracking in control systems. Could an example with temperature control for a human occupied building be provided?
Make a drawing/design of a block diagram of a synchronous sequential machine with its parts labelled. List the procedures used to draw/design the synchronous sequential machine.
In swimming pools and water tanks, the water level needs to be controlled. To manage the water level, a water level controller device is used. The aim of water level controller is to adjust water flow and improve the functioning. For the water level closed loop system shown in figure Q4, analyze the following basic components of the system: (i) Controlled variable (ii) Reference variable (iii) Comparison element (iv) Error signal (v) Control unit Hollow ball Lever Water input Pivot Figure Q4 εεεε
Note: Please do not handwritten.