Proportional Control

What is proportional control?

• A control system in which the output is inversely proportional to the error between the desired setpoint and the actual value.

• A control system in which the output is not affected by the error between the desired setpoint and the actual value.

• A control system in which the output is randomly generated without considering the error between the desired setpoint and the actual value.

• A control system in which the output is directly proportional to the error between the desired setpoint and the actual value.

What is the purpose of proportional control?

• To maintain a desired output by adjusting the control input in proportion to the error between the desired setpoint and the actual output.

• To adjust the control input randomly without considering the error.

• To maintain a constant output regardless of the error.

• To increase the control input exponentially as the error increases.

How does proportional control work?

• Proportional control adjusts the control output in proportion to the sum of the setpoint and the process variable.

• Proportional control adjusts the control output in proportion to the process variable only.

• Proportional control adjusts the control output in proportion to the error between the setpoint and the process variable.

• Proportional control adjusts the control output in proportion to the setpoint only.

What are the advantages of using proportional control?

• Proportional control is less expensive to implement.

• Proportional control reduces the risk of overshooting.

• Proportional control provides more accurate control.

• Proportional control offers faster response and better stability.

What are the limitations of proportional control?

• Limited range of control, slow response time, and high cost.

• Steady-state error, sensitivity to disturbances, and difficulty in tuning for complex systems.

What is the proportional control equation?

• Output = Kp * Error

• Output = Kp - Error

• Output = Kp + Error

• Output = Kp / Error

What is the proportional gain in a proportional control system?

• Integral gain

• Derivative gain

• Setpoint gain

• Proportional gain

What is the effect of increasing the proportional gain in a proportional control system?

• The effect of increasing the proportional gain is to decrease the speed of response and increase the steady-state error.

• The effect of increasing the proportional gain is to decrease the speed of response and have no effect on the steady-state error.

• The effect of increasing the proportional gain is to increase the speed of response and reduce the steady-state error.

• The effect of increasing the proportional gain is to have no effect on the speed of response and steady-state error.

What is the effect of decreasing the proportional gain in a proportional control system?

• Reduces the responsiveness and aggressiveness of the control action.

• Causes instability in the control system.

• Has no effect on the control action.

• Increases the responsiveness and aggressiveness of the control action.

What are some real-life examples of proportional control?

• Thermostat and cruise control

• Robotics and industrial process control

• Automatic gain control and speed limiters

• Traffic lights and elevator control