Automatic Control Unit (ACU) is a part of the laser guided weapon system in T-90 battle tanks. The ‘Guided Missile System’ uses beam-riding laser guidance.
ACU controls the generation of LASER and various operating modes of the weapon system including release of the stores from the tank.
Control Unit is a part of the LASER range finder of gunner’s sight in the T-72 battle tank. It controls generation of LASER and other timing signals with which the distance of the target is computed.
BV-29 is an LRU of 'Vertical Guidance System' which controls the 'Anti-aircraft gun' fitted on the T90 battle tanks. This unit provides various operating modes of the gun including the 'Stabilized Mode' where the gun position remains stable irrespective of the 'pitch' movement of the tank as it moves over rough terrain