Active Control of Sound and Vibration

Learning Outcomes

Subject Specific Practical Skills

Having successfully completed this module you will be able to:

• Develop simple control algorithms to control both sound and vibration through simulation.
• Select an appropriate control strategy.
• Read and understand user documentation for commercial codes.
• Develop simulation models to predict the behaviour of the system under control.

Knowledge and Understanding

Having successfully completed this module, you will be able to demonstrate knowledge and understanding of:

• Understand and analyse performance and robustness of feedback systems.
• Understand nonlinear control strategies and their potential applications.
• Understand how active headsets work.
• Understand and formulate active control of freefield sound field.
• Understand and formulate active control of enclosed sound fields.
• Understand the principle of single-channel control systems.
• Formulate single channel control systems.
• Understand the fundamentals of harmonic control.
• Understand multivariable feedback control system.
• Understand the equations that govern the propagation of sound in a stationary mediumactive control of sound in ducts.
• Formulate multi-channel feedforward of tones and random disturbances.
• Analyse stability in feedback control.
• Formulate independent modal space control.
• Develop receptance method for feedback control.
• Apply active structural acoustic control.

Cognitive Skills

Having successfully completed this module you will be able to:

• Obtain active control solutions for simple benchmark problems.
• Be able to further develop and apply the control algorithms presented in the course to other areas.
• Be able to assess the suitability of different control strategies for a wide range of practical applications.
• Define the equations which govern feedback and feedforward control strategies.

Transferable and Generic Skills

Having successfully completed this module you will be able to:

• Able to write simple computer programs and reports.
• Able to Apply critical analysis and evaluation skills.
• Able to communicate clearly in written reports.
• Able to synthesise information from a range of sources.
• Able to read, understand and interpret scientific papers.

• Active control of plane waves in ducts.
• Strategies for active control including reflection and absorption.
• The use of quadratic optimisation in determining the performance of control systems.
• The principles of single-channel control systems for tonal and random signals.
• The use of the LMS algorithm in active control systems.
• Active control of freefield sound.
• Multichannel control of tones and random disturbances.
• Active control of enclosed sound fields.
• Active structural acoustic control using integrated actuators and sensors.
• Stability, performance and robustness of feedback systems.
• Active headsets.
• Active vibration isolation systems.
• Active control of waves in structures.
• Adaptive signal processing and identification.
• Control of nonlinear systems.
• Modal control.

Teaching and learning methods

Series of lectures, Laboratory sessions.

Problem based-learning – Simulation in Matlab using measured data.

Summative

This is how we’ll formally assess what you have learned in this module.

Referral

This is how we’ll assess you if you don’t meet the criteria to pass this module.

Repeat Information

Repeat type: Internal & External