Coal-fired unit drum boiler water level control method for improving transient performance based on parameter self-adaptation
A technology for coal-fired units and drum boilers, applied in the control and energy fields, can solve the problems of inaccurate measurement, affecting control effects, and large water level fluctuations.
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[0076] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0077] The present invention provides a water level control method for a coal-fired unit steam drum boiler based on parameter self-adaptive improvement of transient performance. The flow chart of the control method is as follows figure 1 As shown, the block diagram of the control system is shown as figure 2 As shown, among them, the boiler drum water level height y measured by the water level sensor, and the expected water level height x d Get the tracking error e after doing the difference 1 , tracking error e 1 It is transmitted to the adaptive controller, and the control law is calculated by the controller to output the control input variable, which is transmitted...
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