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Abstract: Global
optimal control algorithms of linear quadratic regulator is combined
with torsional vibration theory of turbine
generator
shaft system, and torsional vibration energy of shaft system and control
energy are chosen as performance index of active control. The global
optimal control theory with linear quadratic regulator is brought about
to control the tortional vibration of the large turbine-generator shaft
system. And space state equations on active control of torsional
vibration of turbine-generator shaft system are constructed. A solution
way on Algebraic Ricatti Equation is proposed to determine the feedback
control input matrix. This method is to construct a Hamiltonian matrix
and solve its eigenvalue. A simulation program on active control of
torsional vibration for discrete system is compiled and simulation
analysis on active control of torsional vibration is carried out in a
shaft system of 200 MW turbine-generator to examine the active control
effectiveness. The results of time domain analysis on active control of
torsional vibration show that employing the global optimal control
theory of linear quadratic regulator can effectively decrease torsional
vibration and control torque input.
Key words: Turbine-generator
Torsional vibration of shaftsystem Active control Simulation
CLC No: TK263
教育部优秀年轻教师基金和国家自然科学基金(59575015)资助项目. Received 20050831, received in revised form 20051201
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