Marine diesel engine rotating speed PID controller parameter adjusting method and device

The invention discloses a marine diesel engine rotating speed PID controller parameter adjusting method and device, and aims to solve the technical problem that the technology of real-time online adjustment of parameters of a PID controller in the prior art lacks a method for identifying frequent interference working conditions. According to the technical scheme, the rotating speed deviation and the rotating speed deviation change rate of the marine diesel engine speed regulation system are obtained according to the difference value between the actual rotating speed detected by a rotating speed sensor in real time and the target rotating speed, the working condition at the moment is judged, and if the working condition is judged to be normal, set control parameters under the normal working condition are used; if it is judged that the working condition is the load disturbance frequent working condition, using the set control parameters under the load disturbance frequent working condition, and adjusting PID co