Sensor Manufacturing and Process Control Week 1

1. A piezoelectric accelerometer has a damping ratio of 0.65, a proof mass of 0.5 grams, and a spring rate of 10,000 N/mm. What is the damped natural frequency in hz of this device? (Type in an integer)

Hint: Make sure your units of measure are consistent first, then use the formulae to calculate the natural and damped natural frequencies.

17104

2. A series RLC circuit has a resistance of 6.0 ohm, a capacitance of 5882 microfarads, and an inductance of 100 millihenries. What is the x location in rad/sec of the pole s1 ? (Type in a one-decimal number, make sure to use the – sign for a negative integer)

Hint: Make sure your units of measure are consistent first, then use the formulae to calculate the natural and damped natural frequencies, as well as the damping ratio.

3.A series RLC circuit has a resistance of resistance of 6.0 ohm, a capacitance of 5882 microfarads, and an inductance of 100 millihenries. What is the y location in rad/sec of the pole s1. (Type in a one-decimal number.)

Hint: Make sure your units of measure are consistent first, then use the formulae to calculate the natural and damped natural frequencies, as well as the damping ratio.

28.2

 

 

4. What is the closed loop transfer function G(s) of a system with a first order plant and solely proportional control where: K = DC gain K p = proportional constant t = time constant s = Laplace Domain operator

$K_ p K / (ts + 1 + K _p K)$

 

$5.Y$ou are using the Ziegler Nichols Method for Tuning the PID Controller for a Plant Model. When you increase $K_p$ the loop output oscillates at 100 hz at a gain of 800. What value should you set for $K_p$ ? (Type in an integer)

480

 

7. A panel mount controller that controls a single process loop is known as what type of controller? (Type in one word)

 

 Discrete

 

8. Which of the following are attributes of Distributed Control Systems?

Robust, high-speed and redundant control environment

Scalable from pilot plant operation to large, complex petrochemical plant

Identifies abnormal process conditions in real-time

 9.  Which one of the items below is a major difference between how I2C and SPI communication works?

In SPI communication it is not possible to have multiple masters, while in I2C communication, you can have multiple masters

In SPI communication a Master communicates with each Slave over separate data lines, while in I2C communication a Master communicates with each Slave over common clock and data lines.

10. Which one of these layers is not defined by the OSI model of network communication?

 TCP/IP