ex labview_2015_EN

Exercises LabVIEW

Exercise 1

a) Take the average of two numbers.

b) Check if the two numbers are equal.

Exercise 2

a) Add 10 random generated numbers together and show the result (with loops).

b) Slow down the loop so you can realy see the operation

Exercise 3

Turn a led on and off with a frequency of 1 Hz (using loops).

Exercise 4

Calculate the square root of a number. If the number is positive, calculate the loop. If it's negative, show an error message.

Exercise 5

Build a program to turns on a LED after a user defined time (min 2sec, max 60sec). Extra: put a switch on the front panel that can stop the counter before the time is reached.

Exercise 6

a) Create a 1D array with random numbers where the array size can be chosen by the user.

b) Find the largest and the smallest number in this array.

c) Calculate the median

d) Create a subVI of the part of the program that creates the median.

e) Add 0 to the beginning of the array and 1 at the end of the array.

Exercise 7

a) Create a 2D array (4x2) where the user can fill in whole numbers.

b) Change this to a 2x2 array (the first part of the array)

c) Transpone the original array (4x2 to 2x4)

d) Change the original 4x2 array to a 1D array containing all the elements.

Exercise 8

Create a saw tooth signal with an amplitude of 1 V and you can choose the frequency yourself. Show this signal on a graph (don't use waveforms).

Exercise 9

Design a program that steers an elevator using the template on toledo. It is not a complicated elevator. It goes up to the desired floor which the user enters, once arrived you can enter a new desired floor. The floors are: 5, 4, 3, 2, 1,0.

The elevator needs 1 second to go from one floor to the next. Design an FSM on paper and program it in LabVIEW.

Inputs:

?Desired floor

?current floor

Outputs:

?Motor ( 2 bits, 00: idle, 01: up, 10: down)

Exercise 10

Design a bread making machine. The machine needs to knead (motor on), rise (do nothing) and bake (oven on). If you press START, the machine will go through these actions. A timer will show the time passing by a set of LEDs shows which action is active. If the user presses CANCEL, the machine needs to stop and is ready to start over from the top.

Design an FSM on paper and program this FSM and in LabVIEW with the aid of the template on Toledo.

Inputs:

?Time required to bake

?Time required to rise

?Time required to knead

?START button

?CANCEL button

? (timer)

Outputs:

?LEDs to show the current action

?Oven on/off

?Motor knead on/off

Exercise 11 (Extra Exercise)

Show a Lissajous figure on a graph. A Lissajous figure is a figure with on the x-as a cosine wave and on the y-as a sine wave with different frequencies. Make sure the user can change the frequencies independent. The user should also be able to change the total amount of points that are shown on the graph, and also the refresh speed for the new values on the graph. Extension: The user inputs all the different parameters using a pop-up window.