Electrical and Computer Engineering Homework Solutions

PLC- a Ladder diagram is required for the PLC program described below

Draw the ladder daigram for the following PLC program A batch process- which invloves filling a tank with liquid, mixing the liquid and draining the tank, is automated with a PLC. The specific sequence of events is as follows: When the start push button is pressed, a fill valve V1, opens and lets a liquid into the tank unti ...continues

Please refer to the relevant attachment

Modelling of systems using state-variable representation

Problem Set

Please see the attached file for full problem description. Please answer with full explanations. After solving the part a to part f , please discuss the energy dynamics of the question .

Problem

Please answer with full explanations . After answering the question , please also discuss the energy dynamics of the question .

Simulate the dynamic behaviour of the system

Could you please simulate the dynamic behaviour of the system using matlab and simulink for the mass -spring system? Please refer to the attachment.

Develop a state space model for a mass m on a smooth horizontal surface

Develop a state space model for a mass m on a smooth horizontal surface. Assume that the friction force acting on the mass is Bv Newtons, where v is the horizontal velocity of the mass. Your model should output (i) the horizontal displacement to the right of an arbitrary reference point on the horizontal surface x, (ii) the velo ...continues

steady state error

A system with unity feedback is shown in the attachment. Determine the steady-state error for a step input when G(s)=(10(s+4))/(s(s+1)(s+3)(s+8)).

steady-state error

A robot is programmed to have a prescribed. Consider a robot tool that is to follow a saw tooth path, as shown in the attachment. The transfer function of the plant is G(s)=(50(s+1))/(s(s+6)(s+9)) for the closed-loop system shown in the attachment. Calculate the steady state-error

Frequency response

The frequency response for a process of the for G(s)= (Ks) / ((s + a)(s^2 + 20s + 100)) is shown in the attachment. Determine K and a by examining the frequency response curve.

Phase Margin

A system has a system transfer function(see attachment), where K=6.14. What is the actual phase margin?

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