Systems Engineering – Control Concepts

In 1–3 paragraphs for each question, answer the questions.

Control Concepts and Methods

  • Question 1: Provide 1 example of an open-loop system and 1 example of a closed-loop system.
  • Question 2: Given an unstable pattern of variation, describe the relationship of control limits, Type 1 errors, and Type 2 errors.
  • Question 3: Given the following: n = 10 samples, = 0.30 inches and the process range of = 0.0025 inches. What are the control limits of the  – chart and  – chart?

Design for Reliability

  • Question 1: From a design perspective, define reliability, and describe its major characteristics.
  • Question 2: A system consists of four subsystems connected in series. Determine the overall system reliability. Each subsystem has the following reliabilities:
    • Subsystem A= 0.95
    • Subsystem B = 0.80
    • Subsystem C = 0.85
    • Subsystem D = 0.90
  • Question 3: Assume that a system has operational redundancy with three subsystems connected in parallel. Determine the overall system reliability. Each subsystem has the following reliabilities:
    • Subsystem A = 0.95
    • Subsystem B = 0.80
    • Subsystem C = 0.90
  • Question 4: A system has five subsystems with the following Mean-Time Between Failures (MTBF). The five systems are connected in series. Determine the probability of survival for an operating period of 500 hours:
    • MTBF of Subsystem A= 5,270 hours
    • MTBF of Subsystem B = 8,110 hours
    • MTBF of Subsystem C = 4,750 hours
    • MTBF of Subsystem D = 6,050 hours
    • MTBF of Subsystem E = 1,800 hours

Your response should address each of the major points of each question as well as the following:

  • For paragraph answer questions, each response should be 1–3 paragraphs of original information.
  • For paragraph answer questions, each response should include at least 1 reference, and all sources should be cited.
  • Grammar, spelling, punctuation, and format should be correct and professional.

For the questions that include problem solutions, use the following guidelines for your answers:

  • The final solution should be correct.
  • The analytical process for solving the problem should be neatly laid out, and it should be logically defined.
  • The number of arithmetical errors will be considered.
 
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