Research On The Combination Control Of The Stage Lighting Scene

The stage lighting control system plays a more and more important role in stage performance. In the actual control procedure, its practical result deviates from the prospective designed scene of stage lighting, and those deviation need lots of correcting work before or in the show. In order to improve accuracy of the projective lighting and reduce lighting engineers'workloads, we try to a new method to improve the stage lighting control system based on the research of the stage lighting control system.In this paper, clear and definite object of study is the whole stage lighting control system except special effect lamps and the face of the stage by studies of the stage lighting control system. The inputs are aperture, voltage and color; the outputs are pixels' values of some points on the stage surface. The models of stage lights and the stage scene are got and the whole mathematical model is deduced By means of establishing the segmental mathematical model. The controllability and observability of this model are analyzed and these are proved through a system composed of two or three lamps. The way to ascertain the coefficient matrix of the model is given. The analog control system is constructed. It includes the control algorithm, the interrelated hardware circuit and the programming of the upper computer.Through the analysis, the controllability and observability of the stage lighting control system is conditioned. The location of these controllability points is confirmed, and the method of confirming is given. It provides a closed loop control method by structuring a feedback channel. An analog control system of the stage lighting sets up a good foundation for further study.