process control in biomanufacturing mary jane kurtz & george taliadouros minuteman regional high...
DESCRIPTION
Motion and Process Control Motion control – position or velocity Process control – temperature, pressure, flow, level, pH,humidity, chemical compounds Two types of control of either of these –Batch processing –Continuous processingTRANSCRIPT
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Process Control in Biomanufacturing
Mary Jane Kurtz
&
George Taliadouros
Minuteman Regional High School
Bioman Conference July 2009
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What is Process Control?• Use of instruments to carry out a process
• Input information : measured variables temperature, oxygen, pH
• Output directions: manipulated variables heat, pressure gauge, valve
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Motion and Process Control
• Motion control – position or velocity• Process control – temperature, pressure,
flow, level, pH,humidity, chemical compounds
• Two types of control of either of these– Batch processing– Continuous processing
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Driving a Car: An Everyday Example of Process Control
• Control Objective
• Measured variable
• Manipulated variable (or controlled variable)• Sensor
• Actuator
• Controller
• Disturbance
• Maintain car in lane
• Location on the road
• Steering of car
• Driver’s eyes
• Driver’s arms/steering wheel
• Driver
• Curve in the road
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Open Loop Control
• Valve controls flow of water: Open Loop
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Closed Loop Control
• Control Process : Closed Loop
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Process Control Diagram
Error detector
Error signal controller
Controlleroutput signal
Actuator
Energy or Fuel
Manufacturingprocess
Controlled variable
Measured variable
Disturbances
Measurement devices
FeedbackSignal
Set Point +-
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Importance of Process Control for the Bio-Process Industries
• Improved product quality
• Faster and less expensive process validation
• Increased production rates
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Biomanufacturing Tanks
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DO Control in a Bio-Reactor
Air
AC
Variable SpeedAir Compressor
AT
Setpoint
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Controlling a Process• Using Robolab you will learn how to control a
process using a computer
• You will begin with a simple task : How to start and stop a fan
• How to control the variables in the process
• Finally, you will be create a program that will control a greenhouse
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RBX Controls• Inputs are measured
variables seen as numbersTemperature sensor
Touch sensor
Light sensor
• Outputs are manipulated variables seen as lettersMotor
light
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Time to Try it Out !!!
Go to Robo Lab station and try to make a fan