He has devised local methods for cascade control in distributed systems.
2.
Hertz, Barwich, and Yuri A . Krutkov worked on uranium diffusion cascade control theory.
3.
In cascade control, one control loop applies control algorithms to a measured variable against a setpoint, but then provides a varying setpoint to another control loop rather than affecting process variables directly.
4.
Initially three locomotives were coupled together and hauled trains at a constant speed of, but when larger trains required four locomotives the motors were concatenated ( cascade control ), so that the speed was halved to to avoid overloading the power supply.
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