Periodically time-varying system: An instability criterion
Author :
Bickart, T.A.
Volume :
55
Issue :
11
fYear :
1967
Firstpage :
2057
Lastpage :
2058
Abstract :
Two theorems on the instability of a periodically time-varying system are stated. Their relationship to recently published results on instability is discussed. Proofs, made elementary by the assumption of periodicity, are given.
Keywords :
Clocks; Control systems; Differential equations; Hydrogen; Time varying systems;
