1st Order Controller Design (Inverse Nichols Chart)

Given {see attachment}, use the Inverse Nichols Chart to design a simple G(s) to achieve the following specifications ... *Please see attachments for complete question and chart

Linear System Stability - Bode, Nyquist, Root Locus

Please answer the attached questions regarding linear system stability (Involves: loop transfer function; Bode plot; Nyquist diagram; gain, phase and robust stability margins; positive gain root locus)

Root Locus and Root Locus Design (Gain, Controller, Location of Contoller, Required Controller Gains)

Please help me with the attached root locus design question. (Involves: plotting the root locus, determining gain, designing a proportional and integral controller, determining the location of the controller zero, and finding the required controller gain)

Finding a transfer function...REVISED

The frequency response of a linear time invariant system has been measured and can be seen in the attachment file below. A feedback element with a transfer function, H(s), is to be chosen so that the sysytem steady-state error to a unit step input is equal to 0.07. What is a suitable transfer function to achieve this??? I am having hard time to understand the procedure and finding the suitable evidence.

Simulink - Modelling

Consider the following model of a cell growth in a bio-system. The state differential equation is... a) Identify the state variable, the inputs, outputs and parameters. (See attachment for full question)