This paper discusses how state space control concepts may be applied to the modelling and control of coupled, concurrent design tasks subjected to unexpected, dynamic disturbances. The Homogeneous State Space (HSS) model determines the natural response shape of the design process and predicts the number of iterations before all the design tasks are completed, while the Non-Homogeneous State-Space (NHSS) model precisely monitors and controls the stability and the convergence rate of each design task. The amount of additional work or resources required by each task at every stage of iteration can be determined; this facilitates workload distribution and resource allocation in design task planning and scheduling. A case study of the design of a new symmetrical wobble plate compressor is discussed to validate the proposed models in monitoring and controlling the stability of design tasks under the influence of unexpected disturbance
