Programmable Motion Control Systems Quiz
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Questions and Answers

Which actuation system is more suitable for simple two position moves?

  • Servo motor driven actuation
  • Solenoid actuated two position air cylinders (correct)
  • Stepper motor actuated mechanisms
  • Hydraulic cylinders

    • What is a drawback of using air cylinders for actuation?

  • Slower speed compared to servo or stepper motor actuated mechanisms (correct)
  • More difficult to control compared to servo or stepper motor actuated mechanisms
  • Higher cost compared to servo or stepper motor actuated mechanisms
  • Less reliable compared to servo or stepper motor actuated mechanisms

    • Which type of sensor is mentioned in the text as a component of the electromechanical system?

  • Proximity switches (correct)
  • Light sensors
  • Pressure sensors
  • Temperature sensors

    • What is one of the steps in setting up each programmable motion axis?

    <p>Power-up test</p> Signup and view all the answers

    What is one of the components needed for the machine's operation?

    <p>Servo controller</p> Signup and view all the answers

    What is one of the required modes of operation for the machine?

    <p>Manual mode</p> Signup and view all the answers

    Which component is used for motion transmission mechanisms?

    <p>Timing belts</p> Signup and view all the answers

    What is one of the components used for motion actuators?

    <p>DC motors</p> Signup and view all the answers

    What is one of the steps in developing application software for the machine?

    <p>Top-down tree structure design of software</p> Signup and view all the answers

    What is one of the steps in the documentation phase for the machine?

    <p>Document clearly for future modifications</p> Signup and view all the answers

    What is a good example of an application of PMCS?

    <p>A robotic manipulator</p> Signup and view all the answers

    What are the typical components of an electric motor based programmable motion system?

    <p>Motor with position sensor, amplifier, power supply (drive), and controller</p> Signup and view all the answers

    What has made it possible to control motion and coordinate various axes under computer control?

    <p>Low cost microprocessors and digital signal processors (DSP)</p> Signup and view all the answers

    What is hard automation?

    <p>Coordinated motion control achieved by mechanically connecting various machine components with linkages, line shafts, and gears</p> Signup and view all the answers

    What are the examples of coordinated motion control in automated machines in the past?

    <p>Mechanically connecting various machine components with linkages, line shafts, and gears</p> Signup and view all the answers

    What do PMCS involve?

    <p>Mechanical motion system, various actuators and sensors, and computer control</p> Signup and view all the answers

    What is the main characteristic of PMCS?

    <p>Motion is controlled by a digital computer and is programmable</p> Signup and view all the answers

    What are the examples of applications of PMCS?

    <p>CNC machine, XYZ table, and construction equipment tool control systems</p> Signup and view all the answers

    What made coordinated motion control in automated machines possible under computer control?

    <p>Availability of low cost microprocessors and digital signal processors (DSP)</p> Signup and view all the answers

    What do PMCS involve in terms of control?

    <p>Computer control</p> Signup and view all the answers

    What is a key advantage of machines with programmable automation?

    <p>They can produce different parts by simply changing software</p> Signup and view all the answers

    What does 'soft automation' or 'flexible automation' refer to in the context of motion control systems?

    <p>Motion control logic being programmed</p> Signup and view all the answers

    In electronically coordinated machines, how are gear ratios between stations defined?

    <p>In the application software</p> Signup and view all the answers

    What are the components of programmable motion control systems?

    <p>Controller, actuators, sensors, motion transmission mechanisms, and operator interface devices</p> Signup and view all the answers

    What does the controller handle in a programmable motion control system?

    <p>Closed-loop motion control, machine control functions, and communication with operator interface devices and the communication bus</p> Signup and view all the answers

    What is the purpose of decomposing the required motion in designing a PMC system?

    <p>To plan various coordinated moves</p> Signup and view all the answers

    How do machines with programmable automation handle complicated coordination functions?

    <p>Easily code them in software</p> Signup and view all the answers

    What is the role of communication between controllers in a programmable motion control system?

    <p>Coordinating the motion of one axis with other external machine events or other axes</p> Signup and view all the answers

    What is a characteristic of 'flexible automation' in motion control systems?

    <p>Reduces setup times for product changeovers significantly</p> Signup and view all the answers

    What is the function of programmable motion controllers in factory automation applications?

    <p>Control the process using multiple PLCs and programmable motion controllers</p> Signup and view all the answers

    Study Notes

    Programmable Motion Control Systems

    • Coordination between axes is software-coded, allowing for on-the-fly changes in coordination logic.
    • Machines with programmable automation can produce different parts by simply changing software, reducing setup times.
    • Complicated coordination functions can be easily coded in software, unlike in mechanically coordinated machines.
    • "Soft automation" or "flexible automation" refers to motion control logic being programmed, reducing setup times for product changeovers significantly.
    • A printing machine example illustrates the difference between old mechanical automation and programmable automation versions.
    • In electronically coordinated machines, gear ratios between stations are defined in the application software, eliminating the need for physical gears.
    • Factory automation applications may use multiple PLCs and programmable motion controllers to control the process.
    • Programmable motion control systems consist of a controller, actuators, sensors, motion transmission mechanisms, and operator interface devices.
    • The controller handles closed-loop motion control, machine control functions, and communicates with operator interface devices and the communication bus.
    • Motion of one axis needs to be coordinated with other external machine events or other axes, requiring communication between controllers.
    • A practical methodology outlines typical steps involved in designing a PMC system, starting with defining the purpose and functionalities of the machine.
    • The required motion should be decomposed into various coordinated moves as part of designing a PMC system.

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    Description

    Test your knowledge of programmable motion control systems with this quiz. Explore the benefits, components, and applications of PMC systems, as well as the software-coded coordination between axes and the design methodology involved.

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