Homework Answers
![>> num= [0.6 1.2 -1.8]; >> den=[1 -0.2 0]; >> a=tf(num, den) 0.6 3^2 + 1.2 3 - 1.8 3^2 - 0.2 s Continuous-time transfer funct](http://img.homeworklib.com/questions/e28f7670-c0fc-11eb-8679-770481db5755.png?x-oss-process=image/resize,w_560)
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Sketch the Nyquist diagram, find real-axis crossing, and check stability for the system below R(s) 1.s(s-1)...
For the unity feedback system in the below figure, 1. EGO) R(s)) C(s) G(s)K (s 1) (s + 4) a) Sket...
For the unity feedback system in the below figure, 1. EGO) R(s)) C(s) G(s)K (s 1) (s + 4) a) Sketch the bode plot with Matlab command bode0 b) Plot the nyquist diagram using Matlab command nyquist(0, find the system stability c) Find phase margin, gain margin, and crossover frequencies using Matlab command margin(0 and find the system stability
For the unity feedback system in the below figure, 1. EGO) R(s)) C(s) G(s)K (s 1) (s + 4) a) Sketch...
Problem 2: For a unity feedback system where the plant is defined as G(s) K s(s+3)(s...
Problem 2: For a unity feedback system where the plant is defined as G(s) K s(s+3)(s +5) a. Sketch the Nyquist Counter path and Nyquist diagram. Clearly show the real and imag- inary axis intercept points and the low and high frequency asymptotes. (10 pts) b. Using the Nyquist criterion, obtain the range of K in which the system can be stable, unstable, and also find the value of gain K for marginal stability. (7 pts) c. Calculate the frequency...
The open loop transfer function of an electro-mechanical system with unity feedback is: 24K G(s) S(s+2)(s +6) The Nyquist diagram of G(s) has a shape similar to the one shown below Nyquist diagram Cl...
The open loop transfer function of an electro-mechanical system with unity feedback is: 24K G(s) S(s+2)(s +6) The Nyquist diagram of G(s) has a shape similar to the one shown below Nyquist diagram Cl When K -1, calculate both the frequency and the gain at which the plot crosses the real axis Hence state the gain margin or critical gain Kc for this system. If K is chosen as K-0.2Kc, show that the gain G(jo) l at a frequency ω-1.308...
3) (30 points) Find the range of K for the unity feedback system below, but also points and calculate any asymptotes & jw-crossing value. 14. Sketch the root locus and find the range of K for...
3) (30 points) Find the range of K for the unity feedback system below, but also points and calculate any asymptotes & jw-crossing value. 14. Sketch the root locus and find the range of K for stability for the unity feedback system shown in Figure P8.3 for the following conditions: [Section: 8.5 G(s) = Ke-2+2) 1,
3) (30 points) Find the range of K for the unity feedback system below, but also points and calculate any asymptotes & jw-crossing value....
imaginary axis crossing points, respectively (l any).] 9.3 The figure below shows a feedback control system with internal rate compensation r(s) y(s) S(s +2) Bs (a) Set K1-2 and K2-5 and sketch th...
imaginary axis crossing points, respectively (l any).] 9.3 The figure below shows a feedback control system with internal rate compensation r(s) y(s) S(s +2) Bs (a) Set K1-2 and K2-5 and sketch the root locus with β the varied parameter where β> 0 (b) Can system be a marginally stable? if it is not marginally stable please explain why (c) Determine the value of B such that the closed loop system is critically damped.
imaginary axis crossing points, respectively (l...
b) The Nyquist plot of a unity feedback control system is as shown in Figure Q5(b)....
b) The Nyquist plot of a unity feedback control system is as shown in Figure Q5(b). Nyqulst Diagram x 10 1.5 1- System: N Real: -9.08e-005 0.5- Imag: -5.62e-006 Frequency (rad/sec): -104 -0.5 -15 -1.5 0.5 0.5 1.5 1 2.5 3.5 Real Axis x 10 Figure Q5(b) K If the transfer function of the system is given as G(s) (s+10)(s+50)(s+150) determine the following: The closed loop stability of the system using Nyquist Stability Criterion. i) ii) Gain margin and phase...
Question 1 Sketch the polar plot and use the Nyquist criterion to investigate the stability of...
Question 1 Sketch the polar plot and use the Nyquist criterion to investigate the stability of the system whose open loop transfer functions are 10 0 0. 100(1+3D) (3+D)(1+2D) 1602 (1+4D) (D+1)(D+100)
Exercise 1: Plot the Nyquist diagram of 10 G(s) = $? + 2s + 2 and...
Exercise 1: Plot the Nyquist diagram of 10 G(s) = $? + 2s + 2 and deduce the stability of the unity feedback system with the open-loop TF equal to G. Find the stability margins. Compute analytically gain and phase margins. Plot the Bode asymptotic diagram. How can we estimate the values for gain and phase margins graphi- cally?
EEL 4652 Control Systems 1 (Fall 2018) Homework 4 Nyquist Stability Criterion + Frequency Domain Design...
EEL 4652 Control Systems 1 (Fall 2018) Homework 4 Nyquist Stability Criterion + Frequency Domain Design Problem 1: Nyquist Plots and Closed-Loop Stability A unity feedback closed-loop system has a forward transfer function of KG(s). Sketch the Nyquist plot for each of the G(s) cases listed below, and then find if the closed loop system is stable and if not - how many RHP closed loop poles there are. Find it for all the relevant ranges of K for -o0SKo,...
The Nyquist plot of a plant P in a unity feedback system is shown below. It is know that P has on...
The Nyquist plot of a plant P in a unity feedback system is
shown below. It is know that P has one pole with a non-negative
real part.
6.13 The Nyquist plot of a plant P in a unity feedback system is shown below. It is known that P has one pole with non-negative real part 1. What is the number of poles of P with zero real part? 2. What is the number of unstable poles of P? 3....
For the unity feedback system in the below figure, 1. EGO) R(s)) C(s) G(s)K (s 1) (s + 4) a) Sketch the bode plot with Matlab command bode0 b) Plot the nyquist diagram using Matlab command nyquist(0, find the system stability c) Find phase margin, gain margin, and crossover frequencies using Matlab command margin(0 and find the system stability
For the unity feedback system in the below figure, 1. EGO) R(s)) C(s) G(s)K (s 1) (s + 4) a) Sketch...
Problem 2: For a unity feedback system where the plant is defined as G(s) K s(s+3)(s +5) a. Sketch the Nyquist Counter path and Nyquist diagram. Clearly show the real and imag- inary axis intercept points and the low and high frequency asymptotes. (10 pts) b. Using the Nyquist criterion, obtain the range of K in which the system can be stable, unstable, and also find the value of gain K for marginal stability. (7 pts) c. Calculate the frequency...
The open loop transfer function of an electro-mechanical system with unity feedback is: 24K G(s) S(s+2)(s +6) The Nyquist diagram of G(s) has a shape similar to the one shown below Nyquist diagram Cl When K -1, calculate both the frequency and the gain at which the plot crosses the real axis Hence state the gain margin or critical gain Kc for this system. If K is chosen as K-0.2Kc, show that the gain G(jo) l at a frequency ω-1.308...
3) (30 points) Find the range of K for the unity feedback system below, but also points and calculate any asymptotes & jw-crossing value. 14. Sketch the root locus and find the range of K for stability for the unity feedback system shown in Figure P8.3 for the following conditions: [Section: 8.5 G(s) = Ke-2+2) 1,
3) (30 points) Find the range of K for the unity feedback system below, but also points and calculate any asymptotes & jw-crossing value....
imaginary axis crossing points, respectively (l any).] 9.3 The figure below shows a feedback control system with internal rate compensation r(s) y(s) S(s +2) Bs (a) Set K1-2 and K2-5 and sketch the root locus with β the varied parameter where β> 0 (b) Can system be a marginally stable? if it is not marginally stable please explain why (c) Determine the value of B such that the closed loop system is critically damped.
imaginary axis crossing points, respectively (l...
b) The Nyquist plot of a unity feedback control system is as shown in Figure Q5(b). Nyqulst Diagram x 10 1.5 1- System: N Real: -9.08e-005 0.5- Imag: -5.62e-006 Frequency (rad/sec): -104 -0.5 -15 -1.5 0.5 0.5 1.5 1 2.5 3.5 Real Axis x 10 Figure Q5(b) K If the transfer function of the system is given as G(s) (s+10)(s+50)(s+150) determine the following: The closed loop stability of the system using Nyquist Stability Criterion. i) ii) Gain margin and phase...
Question 1 Sketch the polar plot and use the Nyquist criterion to investigate the stability of the system whose open loop transfer functions are 10 0 0. 100(1+3D) (3+D)(1+2D) 1602 (1+4D) (D+1)(D+100)
Exercise 1: Plot the Nyquist diagram of 10 G(s) = $? + 2s + 2 and deduce the stability of the unity feedback system with the open-loop TF equal to G. Find the stability margins. Compute analytically gain and phase margins. Plot the Bode asymptotic diagram. How can we estimate the values for gain and phase margins graphi- cally?
EEL 4652 Control Systems 1 (Fall 2018) Homework 4 Nyquist Stability Criterion + Frequency Domain Design Problem 1: Nyquist Plots and Closed-Loop Stability A unity feedback closed-loop system has a forward transfer function of KG(s). Sketch the Nyquist plot for each of the G(s) cases listed below, and then find if the closed loop system is stable and if not - how many RHP closed loop poles there are. Find it for all the relevant ranges of K for -o0SKo,...
The Nyquist plot of a plant P in a unity feedback system is
shown below. It is know that P has one pole with a non-negative
real part.
6.13 The Nyquist plot of a plant P in a unity feedback system is shown below. It is known that P has one pole with non-negative real part 1. What is the number of poles of P with zero real part? 2. What is the number of unstable poles of P? 3....
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