Contact resistance: Contact resistance is a key parameter that affects the performance of slip rings. If the contact resistance of the conductive slip ring is too large, the temperature at the contact point will rise a lot, and even lead to welding of the brush wire and the slip ring, which will affect the effect of information transmission. The size of the contact resistance is mainly affected by the selection of the friction pair material, the structure of the friction pair, and the contact pressure between the brush pin and the ring. The greater the contact pressure between the brush pin and the ring, the lower the contact resistance, but excessive pressure will also increase the wear of the brush and the electric ring. Therefore, it is necessary to control the pressure within a certain range to achieve contact resistance and friction The balance point between resistances.
Insulation withstand voltage performance: the conductive slip ring has better insulation withstand voltage performance to avoid slip ring breakdown and burning. According to relevant standards, the insulation resistance between the ring and the ground should be greater than 500.
Anti- interference of conductive slip ring : Due to the close distance between slip rings, there are large and small current signals. The interference generated during signal transmission includes electrostatic induction coupling, magnetic field induction coupling and electromagnetic induction coupling. Various kinds of information interfere with each other during transmission, which seriously affects the accuracy of information transmission.
Slip ring sealing performance: If the sealing performance of the slip ring shell is not good, external dust and oil will contaminate the ring and the brush, affecting the contact stability and insulation, thereby affecting the performance of the slip ring.