Abstract: Under the cloud manufacturing mode, the malicious low price and intentional price reduction behaviors of manufacturing service providers will lead to a price war on the cloud manufacturing service platform. The data including the service prices, the numbers of manufacturing service providers and the transaction number in a period of time on a cloud manufacturing service platform are analyzed, and a conclusion is drawn that the quotation of manufacturing services obeys the normal distribution law when the manufacturing service providers and demanders reach a certain size. The game theory is introduced into the cloud manufacturing mode, the game models of manufacturing service providers and cloud manufacturing service platform are built under different countermeasures, and the sub game perfect Nash equilibrium is given. Aiming at the deliberate and slow price reduction behavior, the information acquisition cost of the manufacturing service providers with premeditated price reduction is increased by adding the conditional restriction of obtaining information. The research shows that the proposed two price war countermeasures can effectively prevent the manufacturing service providers from the malicious low price and intentional price reduction behaviors, and ensure the stable operation of the cloud manufacturing service platform.

Key words: cloud manufacturing, price distribution curve, price war, game theory, information acquisition cost