Oscillations in a system of two model self-excited oscillators based on vacuum microtriodes with unidirectional coupling

The results of a numerical investigation of the behavior of two model self-excited oscillators with vacuum microtriodes coupled with one another by a unidirectional coupling are presented. It is shown that the behavior of such self-excited oscillators (each of which, being a system with one degree of freedom, can exhibit only periodic oscillations) is quite complicated: Not only periodic and quasiperiodic but also chaotic oscillations are possible in the system. A state diagram is constructed in the plane of the controlling parameters frequency detuning — magnitude of the coupling.