Method and apparatus for intelligent active and semi-active vibration control

The method of controlling and attenuating vibration or noise induced into an automotive vehicle, comprising

• providing sensors for extracting signals related to vibration and/or acoustic noise from the structure and its environs and actuators for applying attenuating noise and/or vibration to the structure,
• providing a microprocessor having inputs from the sensors and outputs to the actuators, and
• operating the microprocessor cyclically according to an optimal control algorithm based on minimum variance, then an intelligence control algorithm, and then a parameter optimization algorithm,
• the microprocessor then generating and applying at least one signal to the actuators which will minimize and/or filter the vibration or noise introduced to the vehicle.

A system for controlling and attenuating vibration and/or noise in a structure where the vibration is induced by vibration excitation sources and the noise may result directly or indirectly from the vibrations sources, comprising

• a plurality of sensors attached to different parts of the structure for extracting signals related to vibration and/or acoustic noise from the structure and its environs,
• a plurality of actuators attached to vibration and/or noise sources on the structure for and capable of applying attenuating noise and/or vibration to such sources,
• a microprocessor having inputs from said sensors and outputs to said actuators, said microprocessor also having a memory for storage of control programs to be operated by said microprocessor, and a plurality of programs in said memory for use by said microprocessor,
• said programs including
• b) an optimal control program based on a minimum variance algorithm,
• c) a program based on an intelligent control algorithm using stored past performance information, and
• d) a fourth program based on a fuzzy logic algorithm,
• the microprocessor running said programs and then generating one or more control signals and applying such signals to said actuators to minimize and/or filter the vibration or noise introduced to the structure.

A system for controlling and attenuating vibration and/or noise in a structure, where the vibration is induced by vibration excitation sources internal and external of the structure and the noise may result directly or indirectly from the vibrations sources, comprising

• sensors attached to parts of the structure for extracting signals related to vibration and/or acoustic noise from the structure and its environs,
• actuators attached to vibration and/or noise sources on the structure for applying attenuating noise and/or vibration to such sources,
• a microprocessor having inputs from said sensors and outputs to said actuators, said microprocessor also having a memory for storage of control programs to be operated by said microprocessor,
• said programs including
• an optimal control program based on a minimum variance algorithm and also stored in said memory,
• a program based on an intelligent control algorithm using stored past performance information and also stored in said memory, and
• a program based on a fuzzy logic algorithm and also stored in said memory,
• the microprocessor running said programs and then generating one or more control signals and applying such signals to said actuators to minimize and/or filter the vibration or noise according to its effect on components of the structure.