A system for automatic multivariable calibration of an engine controller. The system may take inputs which include actuator setpoints, sensor measurements, performance requirements, and so forth. There may be an algorithm to compute engine calibration parameters for the controller. Each of the actu
A system for automatic multivariable calibration of an engine controller. The system may take inputs which include actuator setpoints, sensor measurements, performance requirements, and so forth. There may be an algorithm to compute engine calibration parameters for the controller. Each of the actuators may be separately stepped through to experimentally obtain actuator input and sensor output data. Algorithmic processing of the experimentally obtained data may be performed to calculate parameters of a model of an engine. A model based control design algorithm may then be invoked to obtain the calibration parameters for a controller. The calibrated controller may be tested with real or simulated engine conditions. The performance related to the parameters may be analyzed and determination of the acceptability of the data be made. If not acceptable, the parameters may be reprocessed. If acceptable, the calibration parameters may be downloaded to the engine controller for application and use.
대표청구항▼
What is claimed is: 1. A calibration data design tool for determining a model and/or one or more calibration parameters for an Engine Control Unit (ECU) that can be used to control one or more operational aspects of an internal combustion engine, wherein the internal combustion engine includes one
What is claimed is: 1. A calibration data design tool for determining a model and/or one or more calibration parameters for an Engine Control Unit (ECU) that can be used to control one or more operational aspects of an internal combustion engine, wherein the internal combustion engine includes one or more sensors and one or more actuators, the calibration data design tool comprising: a model determination module for determining a model and/or one or more calibration parameters for a model of an internal combustion engine that can be used by an ECU, the model determination module receiving inputs from one or more of the sensors of the internal combustion engine, and providing one or more outputs to one or more of the actuators of the internal combustion engine in an open loop manner; an application trial module coupled to the model determination module for operating or simulating an internal combustion engine in a closed loop manner using the model and/or calibration parameters determined by the model determination module; and a performance analyzer coupled to the application trial module for analyzing the performance of the internal combustion engine when operated or simulated by the application trial module. 2. The system of claim 1, further comprising a requirements satisfaction indicator coupled to the performance analyzer for indicating whether the performance of the internal combustion engine satisfies one or more requirements. 3. The system of claim 2, wherein the model determination module comprises: an experiment stage; a model identification stage coupled to the experiment stage; and a model based control design stage coupled to the model identification stage and to the application trial module. 4. The system of claim 3, wherein the application trial module comprises: a simulation module connected to the model based control design stage; and an engine trial module connected to the simulation module and to the performance analyzer. 5. The system of claim 4, wherein the requirements satisfaction indicator is configured to: send a start signal to the model determination module if the one or more requirements are not satisfied, and download one or more calibration parameters to an engine control unit (ECU) if the one or more requirements are satisfied. 6. The system of claim 5, wherein the experiment stage steps through each actuator that is to be controlled by a multivariable engine control unit (ECU). 7. A calibration system, comprising: a calibration computer configured to be coupled to one or more sensors and one or more actuators of a process that is to be controlled; wherein the calibration computer comprises: a model determination unit for determining a model and/or one or more calibration parameters for a model, the model determination unit configured to receive inputs from the one or more sensors, and to provide one or more outputs to one or more of the actuators in an open loop manner; and an application trial module coupled to the model determination unit for operating or simulating the process to be controlled in a closed loop manner using the model and/or calibration parameters determined by the model determination unit. 8. The system of claim 7, wherein the model determination unit comprises an experiment module. 9. The system of claim 8, wherein the experiment module steps through at least one actuator of the one or more actuators in order to determine the model and/or the one or more calibration parameters for a model. 10. The system of claim 9, wherein the model determination unit outputs the model and/or the one or more calibration parameters for a model to the application trial module for testing. 11. The system of claim 10, further comprising: an evaluation module connected to the application trial module; and wherein the evaluation module determines whether the model and/or the one or more calibration parameters for a model are satisfactory. 12. The system of claim 11, wherein: if the model and/or the one or more calibration parameters for a model are not satisfactory, then control is returned back to the model determination unit; and if the model and/or the one or more calibration parameters for a model are satisfactory, then the model and/or the one or more calibration parameters for a model are downloaded to a control unit for the process to be controlled. 13. The system of claim 12, wherein the process to be controlled is an internal combustion engine and the control unit is an Engine Control Unit (ECU), and wherein: the engine control unit comprises a control algorithm module and is connected to the evaluation module; and wherein upon a downloading of the model and/or the one or more calibration parameters for a model, the plurality of actuators are subsequently controlled by the control algorithm module. 14. The system of claim 13, further comprising a plurality of sensors connected to the control algorithm module. 15. The system of claim 14, wherein: the evaluation module comprises a closed-loop simulator and/or an engine trial module; and the actuators are connected to a plurality of apparatuses associated with an internal combustion engine; and the plurality of sensors is associated with apparatuses with the internal combustion engine.
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