Hanatech Co., Ltd.
Chapter 4
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III. Actuation Test ---------------------------------
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The actuation test is a very hel pful function that tem porarily acti vates
or stops a certain actuator such as an injector, a motor or a sol enoi d
by force, so that the user can evaluate the system's condition or the
part’s norm al operati on by observi ng its reaction
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Signals from various sensors are input to a control unit, and the
actions are taken by controlling to actuators. Sensors and
actuators are causes and effects in a control system.
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Whil e the data stream functi on is useful to observe if the sensors are
working properly and the control unit is coll ecting correct data from
the sensors wi thout probl em, the actuator test is helpful to exam ine if
the actuators are working i n norm al conditi ons and the control unit is
com mandi ng proper control over the system .
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Some of the cars such as Nissan or Toyota provide even more
advanced actuation tests by letting the user observe the reaction of
overall control system when manually adjusting the sensor input
val ues.
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