Abstract

In car manufacture industry (in Shanghai), we need to do leak test for coolant tank. Normally, many coolant tanks e.g. 5 have to be tested at the same time. The traditional test system has only one pressured liquid input with a single pressure sensor and a temperature sensor to monitor and control the coolant tank leak test system. Once a tank leaked, it was difficult to identify which one in testing had been leaking. This paper presents a smart design of the test equipment for a coolant tank leak test using existing testing equipment. This design applied fault detection and isolation observer based method.

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