1989-02-01

Electronic Control Unit of the Sumitomo Electronic Antilock System 890870

The first SUMITOMO ELECTRONIC ANTILOCK SYSTEM (ALS), a 4-Sensor 3-Channel System for sophisticated FWD vehicles, has been in production since 1987. Further developments have lead to systems suitable for 4W vehicles and compact cars, showing increased control quality and reduced size, weight and production cost.
Reliability, one of the major targets in the development of the First system's Electronic Control Unit (ECU) since 1982, was successfully achieved. Recent work has been geared toward reducing the size and production cost of ECU hardware, whilst maintaining the system's reliability.
This paper describes the basic design of the current 1987 ECU and further details developments of the hardware.

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