Exam 7: Embedded Microcontrollers, Open and Closed Loop Process Control

Match the system description in with the system types .Use the system types as many times as needed. -Found in direct liquid heating processes, liquid level processes, and sensors.

Single loop continuous controllers are limited to the following operation modes: P, I, D, PI, PID.

Both a microcomputer and a microcontroller contain a CPU.

The transient response time for a control system is the length of time between the start of the rise or fall in the process variable and the point where it reaches the maximum change.

Control systems with only proportional control will always have a process variable offset after a disturbance to the system.

Modeling of the production process is more often done with process systems that have been in operation for a number of years because much is known about the systems.

If the control system is underdamped then the response for the control system has ringing.

Select the statement below that is the definition of a peak percentage overshoot response curve.

MATCHING. Choose the item in column 2 that best matches each item in column 1. Match the process control term with the correct definition of the term. Definitions may be used more than once. -Error

MATCHING. Choose the item in column 2 that best matches each item in column 1. Match the process control term with the correct definition of the term. Definitions may be used more than once. -Process variable

March the feature to its language. -Cannot access all CPU instructions

MATCHING. Choose the item in column 2 that best matches each item in column 1. Match the process control term with the correct definition of the term. Definitions may be used more than once. -Controller output

Match the system description in with the system types .Use the system types as many times as needed. -Gain has a roll off of 20 db per decade.

Integral time is the number of repeats per minute and reset is the reciprocal of the integral time.

The only way to eliminate steady -state error after a system disturbance is to add equal amounts of integral and derivative action to a proportional controller.

The three main bus systems in a microcontroller are address, data, and I/O.

Match the system description in with the system types .Use the system types as many times as needed. -One storage element and dissipative element.

A watchdog timer generates an interrupt when the system is hung.

The Joint Test Action Group coordinates those microcontroller instructions that are used for software troubleshooting.

Of the three components in a system response (dead time, transient response, and steady -state response), dead time is the most difficut for the closed -loop system to correct.