Abstract: In an automotive system (300), a knock detection scheme is provided for detecting knock events in an internal combustion engine that are sensed by a transducer structure, such as a non-intrusive acoustic accelerometer sensor (310) to generate sensor signal information which is processed by a signal processing structure (312, 316, 318, 326) which extracts digital signal parameters from the sensor signal information to identify a predetermined pitch frequency (330) and any short-term energy increase (328) in the digital signal information which in combination are used to provide a positive indication of engine knock behavior. When a short term Fourier transform (324) is used to extract the digital signal parameters, time frequency resolution may be improved by appropriately windowing the digital signal being transformed.

Abstract: In an automotive system (300), a knock detection scheme is provided for detecting knock events in an internal combustion engine that are sensed by a transducer structure, such as a non-intrusive acoustic accelerometer sensor (310) to generate sensor signal information which is processed by a signal processing structure (312, 316, 318, 326) which extracts digital signal parameters from the sensor signal information to identify a predetermined pitch frequency (330) and any short-term energy increase (328) in the digital signal information which in combination are used to provide a positive indication of engine knock behavior. When a short term Fourier transform (324) is used to extract the digital signal parameters, time frequency resolution may be improved by appropriately windowing the digital signal being transformed.

Abstract: Simulate and calibrate a process by generating a modular representation of a process using modules and variables, each module representing a portion of the process, each variable representing an adjustable parameter of the process. One or more variables are set to specific values. Source code is generated to implement the process according to the modular representation, the code being generated without implementing portions of the process that are not executable when the one or more variables are set to the specific values. The source code is compiled into a machine code and executed to implement the process.

Abstract: Simulate and calibrate a process by generating a modular representation of a process using modules and variables, each module representing a portion of the process, each variable representing an adjustable parameter of the process. One or more variables are set to specific values. Source code is generated to implement the process according to the modular representation, the code being generated without implementing portions of the process that are not executable when the one or more variables are set to the specific values. The source code is compiled into a machine code and executed to implement the process.