When the set point is reached, the thermostat turns off the heater. If the actual temperature is lower than the set point, the thermostat turns on the heater. The difference between the set point and the process variable is the error. The thermostat measures the actual temperature in the room (the process variable) and compares it to the set point. The desired temperature (set point) is set on the thermostat. In this strategy, the control action is based on the output of the system.Ĭonsider the example of a home thermostat controlling a heating system. Feedback Controlįeedback control is the most common type of control system. This documentation was created using LABVIEW report generation toolkits.Feedback, feedforward, and cascade control are three primary types of control strategies used in process control systems. In this thesis a professional documentation based on word file was created where the entire information available including ICE VS VCE graph. In every project or assignments, a good documentation is one of the most important tasks. To solve this task, different local variables were used to transfer data between the states. Furthermore, transferring data from one state to another state is a crucial task for all the design patterns in the LABVIEW. Beside of these, the method of creating CSV file was shown in this thesis. All the devices are accommodated to create a user friendly program for the static measurement. There was another important device (SM 18-220 DC programmable power supply) used to generate a pulse. Furthermore, the key devices of the thesis are CDAQ devices which are supported by NI and used to accomplish different tasks such as NI 9239 was used for measuring analog voltage and current, NI 9263 was used to generate output voltage and NI 9212 was used as a thermocouple. After that, a state machine design pattern was chosen for the static measurement. Before making a program for the static measurement, different types of design patterns have been discussed in this thesis. Therefore, this master thesis addresses to create an automated system for semiconductor test setup using LABVIEW. There are different kinds of software to create an automated system but, among of them LABVIEW have been using for more than 20 years in the automation process. Beside of this, nowadays automation process is also utilized in the electrical measurement system. It is used to reduce human involvement in the fabrication operations. Automation is getting popular in the semiconductor manufacturing industries.

Labview pid temperature control example