Project controlling from definition to planning, execution and completion

The project control cycle consists of 1) planning, 2) checking and 3) acting: taking control (steering). It takes place during all phases of the generic process of projects: 1) definition, 2) planning, 3) execution and 4) completion. With the progression of the project and with the breakdown from general to more detailed (sub-)tasks, the planning becomes more detailed and precise. The values measured for controlling become more accurate as well. The effort needed for controlling increases