Example Of Rpm Report

A 9-volt motor was used for performing the experiment. Measurement and automaton explorer was used to record experimental data. The tools are useful for signal querying before the experiment began, these were used only for data recording. Before performing the experiment there was a diagnostic run to verify that the equipment was functioning correctly. This diagnostic run was to make sure that all channels were receiving proper signals; otherwise the proper adjustments were to be made.
Experimental data from the measurement and automation explorer were collected by means of labVIEW. For this purpose the motor RPM was first increased to see if square wave was being input into the program. This test ensured that the program was performing as per specification and collecting the right data. Figure 1 below shows the experimental layout used to collect our data. The black box denotes the motor and shows the circuit board connected at channel zero through wires. The motor is also connected to the computer that is used for experimental data gathering.
Figure 2 shows the chart which is encoded using bits and pulses. The latter generate a TTL signal. The function of the encoder is to compare several pulses over a given time interval in order to verify the correctness of the experimental data. The pulse width denoted acceleration. They are observed as pulses per second, which is correlated with the motor RPM. We used Labview to calculate the number of pulses per minute, which would give us the motor RPM. We observed four pulses for each revolution.
Within Labview, we started by using the DAQ assistant to set up the basic structure of the block diagram. We took an analog input and voltage signal and specified the proper channel, assigning it to 0. Figure 3 below shows the screen that we obtained. We received a few errors in our experiment: an impure pulse can create problems with the DAQ assistant. We performed signal analysis and took help of the timing and transition tool. While measuring the pulse, we also used to tool to calculate signal frequency. We generated the output and the indicated RPM is shown in Figure 4 below.