ASAM ACI

The majority of ECUs in a vehicle undergo the The process of ECU parameter tuning. Tests with ECU hardware and software in the loop are carried out. ECU internal variables and external sensor data is recorded and analyzed. The values of internal ECU parameters are determined as a result of this process.calibration development step. The The process of ECU parameter tuning. Tests with ECU hardware and software in the loop are carried out. ECU internal variables and external sensor data is recorded and analyzed. The values of internal ECU parameters are determined as a result of this process.calibration of some vehicle components can be very complex and time consuming. This is particularly true for internal combustion engines. The role of an engine ECU is to continuously measure a large amount of engine data (requested load, speed, fuel and air temperature, etc.) and to calculate a set of optimal control output signals. The control strategies of the engine ECU have to meet contradicting optimization goals (high torque at low fuel consumption and emission, etc.) in a multitude of different environment and dynamic load conditions. Running the tests on an engine dynamometer to find the optimal The process of ECU parameter tuning. Tests with ECU hardware and software in the loop are carried out. ECU internal variables and external sensor data is recorded and analyzed. The values of internal ECU parameters are determined as a result of this process.calibration parameters, curves and maps is a function of many input parameters and conditions. This complex task can hardly be done manually anymore within acceptable time and cost limits. Consequently, test stands are increasingly equipped with systems that automate the The process of ECU parameter tuning. Tests with ECU hardware and software in the loop are carried out. ECU internal variables and external sensor data is recorded and analyzed. The values of internal ECU parameters are determined as a result of this process.calibration task.

ASAM Automatic Calibration Interface (ASAM Standard)ACI (Automatic The process of ECU parameter tuning. Tests with ECU hardware and software in the loop are carried out. ECU internal variables and external sensor data is recorded and analyzed. The values of internal ECU parameters are determined as a result of this process.Calibration Interface) defines an interface between test stand automation systems (TAS) and automated The process of ECU parameter tuning. Tests with ECU hardware and software in the loop are carried out. ECU internal variables and external sensor data is recorded and analyzed. The values of internal ECU parameters are determined as a result of this process.calibration systems (Automatic Calibration SystemACS). The interface consists of an object-oriented, client-server Application Programming InterfaceAPI, which offers four services that are requested by the Automatic Calibration SystemACS (the client) and carried out by the TAS (the server).

• Player service: controlling of test stand actuators for set-point adjustment
• Recorder service: recording of measurement values (mean or actual) from the test stand
• Watcher service: monitoring of out-of-bounds channel values
• Device service: further services such as ECU-specific and test stand-specific operations

The services allow the Automatic Calibration SystemACS to preset the unit-under-test, request specific The process of recording data from internal ECU memory and external sensors.measurement tasks and retrieve the The process of recording data from internal ECU memory and external sensors.measurement values from the TAS. Based on these services, an Automatic Calibration SystemACS can automatically run a set of predefined tests, modify tests based upon earlier test results and even modify ECU The process of ECU parameter tuning. Tests with ECU hardware and software in the loop are carried out. ECU internal variables and external sensor data is recorded and analyzed. The values of internal ECU parameters are determined as a result of this process.calibration parameters of the unit-under-test. Client and server may reside on different host systems and communicate via Transmission Control Protocol (IETF Standard)TCP/Internet Protocol (IETF Standard)IP. ASAM Automatic Calibration Interface (ASAM Standard)ACI is suitable for both static and transient test executions. The interface is currently not suitable for supporting an Automatic Calibration SystemACS that has to respond under Property of a subsystem, which is subject to timing constraints in such a way that it must be capable to respond to events from its environment timely enough so that the overall system remains stable and performs as specified.real-time conditions.

ASAM Automatic Calibration Interface (ASAM Standard)ACI was initially developed with engine The process of ECU parameter tuning. Tests with ECU hardware and software in the loop are carried out. ECU internal variables and external sensor data is recorded and analyzed. The values of internal ECU parameters are determined as a result of this process.calibration in mind. However, the A public specification, which has been developed by experts in a defined consensus-driven development process and was released by officials that represent a significant share of the industry for which it is targeted, giving the specification the necessary legitimacy to be called a 'Standard'.standard has been successfully used in other test environments such as wind tunnels, electrical motor test stands and in-vehicle test systems.

Standard Authors

A&D Company Ltd., AVL LIST GmbH, BMW AG, D2T, Daimler AG, ETAS GmbH, FEV Automatisierungssysteme GmbH, Horiba GmbH, Kristl, Seibt & Co GmbH, M&K Mess- und Kommunikationstechnik GmbH, Renault S.A., Volkswagen AG.