Sensors And Actuators

Unit 4 Sensors and Actuators ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Computer-Process Interface ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Computer Process Control System Actuators Computer Controller Transformation Process Sensors DAC ADC Input Devices Output Devices Continuous and Discrete Variables Continuous and Discrete Parameters

Sensors Physical Medium Sensing Element Conditioning Target Handling Temperature Resistance Voltage Information Transducers Micro-sensors 10 -6 m Stimulus (s) Signal (S)

Transfer Function ,[object Object],[object Object],[object Object],[object Object],[object Object]

Solution ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sensors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Ultrasonic (distance) Light (light intensity) Touch Sound (db pressure)

Other Sensors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Actuators ,[object Object],[object Object],[object Object],[object Object]

Actuators Signal Processing & Amplification Mechanism Electric Hydraulic Pneumatic Final Actuation Element Actuator Sensor Logical Signal

Types of Actuators ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Torque-Speed Curve of a DC Servomotor and Load Torque Plot Torque, T Speed, ω Load Operating Points DC Servo AC Servo Stepper

Motor Controllers The POSYS® 3004 (Designed & Made in Germany) is a PC/104 form factor board dedicated to high performance motion control applications with extensive interpolation functionality. The POSYS® 3004 is designed to control up to 4 axes of servo and stepper motors and provides hardware linear, circular, Bit Pattern and continuous interpolation which allow to perform the most complex motion profiles . Update rates per axis do not exist as each axis runs in absolute real-time mode simultaneously which makes these boards to one of the best performing motion controllers for up to 4 axes in the market.

Stepper Motors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Solution ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Analog-to-Digital Conversion ,[object Object],[object Object],[object Object],Variable Time Analogue Signal 1001 1101 0101 Discrete Variables

Hardware Devices in Analog-to-Digital Conversion Analog Digital Converter Transformation Process Sensors & Transducer Other Signals Continuous Variable Signal Conditioner Multiplexer Digital Computer Amplifer

Features of an ADC ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Successive Approximation Method ,[object Object],[object Object],[object Object],[object Object],[object Object]

Resolution ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Digital-to-Analog Conversion ,[object Object],[object Object],[object Object],[object Object]

Example ,[object Object],[object Object],Instant Binary Data 1 101000 2 101010 3 101101 E 01 = 100{0.5(1)+0.25(0)+0.125(1)+0.0625(0)+0.03125(0)+0.015625(0)} E 01 = 62.50V E 02 = 100{0.5(1)+0.25(0)+0.125(1)+0.0625(0)+0.03125(0)+0.015625(0)} E 02 = 65.63V E 03 = 100{0.5(1)+0.25(0)+0.125(1)+0.0625(0)+0.03125(0)+0.015625(0)} E 03 = 70.31V

Input/Output Devices ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Sensors And Actuators

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