The tension when coiling the optical fiber is the main factor in the qulity of optical fiber.The fiber material itself is smooth,easily fold and the transmission losses will be caused if the fiber tension over the limit.Therefore,in the process of optical fiber around,the fiber tension need to stable at a very small value.Aiming at the characteristics of optical fiber around process,a new type tensioncontroller was designed,using C8051F340 as the core and based on the self-adjusting fuzzy PID.The requiremen...