In this paper, Using rigid-flexible coupling method the auto synchronous belt drive system dynamics model is established. We can make the rigid-flexible coupling analysis of auto synchronous belt drive system through Recurdyn, designed and auto synchronous belt vibration displacement measurement device was developed, measuring the midpoint of the belt in the process of synchronous belt transmission vibration curve of change over time. Has an important value to improve auto synchronous belt transmission stability and reduce the transmission noise.

This paper describes a SRAM design using the pipelining technique which has been used in many microprocessors extensively. The main purpose to design SRAM with the technique of pipelining is to improve the whole performance of the SRAM based on the characteristic of the pipelining technique that it can incease exponentially the circuit performance. A 2-stage pipelining 4K SRAM has been verified by simulation, and the results demonstrate that the performance of the read operation can be improved twice if the pipelining technique has been used compared with the conventional SRAM operation.