If I don't study what I need for my exam

[drowsy estuary]

Things I need to study for:
Equations of motion for:

• Electrical Circuits: Op-Amps and Circuits
• Rotational Systems: E.g. Pendulum system, or component that pivots about some axis e.g. theta
• Electromechanical: DC Motors
• Small Angle Approximation and when to use this
• Lagrangian and when to use this (unsure if any of these systems really require, I know maglev systems covered this)
• Setting up Block Diagrams for each of them. What are the 3 rules when setting them up?
• An example of a SISO system, clearly noting the input, output, plant, controller, feedback, disturbances (if there are any)
• Know all the possible rules for block diagram manipulation
• Process for algebraic manipulation to determine the transfer function of a system
• Differentiate when to use the Cover-Up Rule, or Method of Undetermined Coefficients for an Ordinary Differential Equation when determining the response, given the Initial Conditions

@fallen roost I'm adding you to this list of people who can think of a punishment

[fallen roost]

You have to crash your car into a pole

[cobalt spear]

@drowsy estuary when is your exam

[cobalt spear]

Which one of these are you MOST confident about?

[drowsy estuary]

tomorrow, 3:00 PM

[drowsy estuary]

Last 4 points

these are mainly what I still haven't covered fully

[sudden mortar]

You have to play 10 runs of each scen on my static bench

Either that or 80 runs of 6 sphere

[cobalt spear]

arno would enjoy that bro is a masochist

[sudden mortar]

I can't tell if he's typing to agree or disagree or if he's typing out a ban message it's been taking too long

[drowsy estuary]

Things I need to study for:
Equations of motion for:

• Electrical Circuits: Op-Amps and Circuits - have gone through all eqn of motion, doing questions tonight
• Rotational Systems: E.g. Pendulum system, or component that pivots about some axis e.g. theta - have gone through all eqn of motion, doing questions tonight
• Electromechanical: DC Motors - have gone through all eqn of motion, doing questions tonight
• Small Angle Approximation and when to use this - Used for mechanical systems when some thin member pivots about axis theta

Lagrangian and when to use this (unsure if any of these systems really require, I know maglev systems covered this)
Lagrangian in context for mechanical systems describe the kinetic and potential energy of the system. basically just T-V= 0. T is found by differentiating the EOM with respect to the selected coordinate, while V is simply the PE part e.g. KE is 1/2mgl^2theta^2, PE can be modelled for rod as mgl(1-cos(theta))

Setting up Block Diagrams for each of them. What are the 3 rules when setting them up?

• I realise there could be 4 rules instead:

1. What are the Inputs and Outputs?
2. What are your linking terms?
3. Integrate over Differentiate
4. "=" can be considered where a summing junction is required
5. Put desired obtained terms to remind yourself what you need

An example of a SISO system, clearly noting the input, output, plant, controller, feedback, disturbances (if there are any)

• Heating a room
• Input = Voltage to configure desired room temperature, Heat loss
• Output = Actual room temperature
• Plant = The room being heated
• Controller = A/C Unit
• Feedback = Temperature sensor

Know all the possible rules for block diagram manipulation
Process for algebraic manipulation to determine the transfer function of a system

• Generally will need to turn the EOM into a matrix, do 2x2 inverse and do matrix multiplication to get 2 Transfer Functions. For Electrical Circuits and Rotational

Systems in particular, you will need to do a substitution with the second transfer function to substitute back into the first transfer function. There have been cases of being required to do a 3x3 inverse matrix. Steps for 3x3 matrix are:

1. Find determinant to multiply matrix with
2. Find the determinant of 2x2 minor matrices for matrix A (holy fuck)
3. Apply Cofactor Law to get Adjunct matrix

• Be careful when simplifying multiple fractions on top of each other. Work at the main numerator before going to the denominator (as seen in op-amp example)
  Differentiate when to use the Cover-Up Rule, or Method of Undetermined Coefficients for an Ordinary Differential Equation when determining the response, given the Initial Conditions

• Coverup rule is used if the numerator has a polynomial order of 2 and/or under. Undetermined Coefficients is if orders of 3 and above

• Apply Initial Conditions after you do the Laplace Transform and rearrange for the Output

When do we apply step inputs as part of the response?

• Generally you need to when you're given conditions for t<0, t>=0.

[drowsy estuary]

was typing my update @cobalt spear

[cobalt spear]

Good

[drowsy estuary]

I have somehow covered an insane amount but I will do some more q's after dinner

[cobalt spear]

Holy im so proud of you

[drowsy estuary]

Ban messages are done in private btw

[drowsy estuary]

Things I need to study for:
Equations of motion for:
Electrical Circuits: Op-Amps and Circuits - have gone through all eqn of motion, doing questions tonight
Rotational Systems: E.g. Pendulum system, or component that pivots about some axis e.g. theta - have gone through all eqn of motion, doing questions tonight
Electromechanical: DC Motors - have gone through all eqn of motion, doing questions tonight

@cobalt spear @sudden mortar making tactical decision to sleep now so I can wake up not burnt out later

I did at least one problem for each, these take fucking ages to do

[cobalt spear]

@vapid galleon

schizo scribbling

[sudden mortar]

W