| The synchronization driver system is one important area of integrative technology among mechanism electronics and hydraulic. It was widely applied in industry. Comparing with other synchronization modes, the synchronization mode with hydraulic have many advantages, such as simple structure, composed-easily, controlled-easily, suited for high power condition, etc. The key to synchronization system is high efficiency and synchro-precision problem. As a result, how to design and develop a high efficiency and precision synchro-system is a difficult problem that is cared by many engineering technicians. This paper aims to the defects of two traditional synchro-control modes: valve-control and pump-control, and brings forward a complex control system with pump-control and valve-control together to improve. This complex system makes the best of the advantages of pump-control and valve-control each other, and improve the synchro-running capability of the system as possible. This complex control system mainly utilizes the valve- control抯 output to ensure dynamic capability during dynamic adjustment. and uses pump-control to carry out adjustment in the process of static state. The main content of the paper is listed as follow: 1. Discuss a synchronization and complex control system with hydro- mechanical servo?valve-control as the compensation system, and analysis and study the system抯 mathematics model detailed. 2. Bring forward another complex control system with electro- hydraulic proportional valve-control as the compensation system, and also analysis the system. 3. Evaluate the synchro-capability of each synchro-system with simulating test system~ synchro-error detecting system and data automatic II collection software, which was developed with Visual Basic language in windows OS flat roof.
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