Research Of Electro-Hydraulic Servo Measure And Control System Based On DSP

With the development of test-machine technology, in recent years electro-hydraulic universal material test-machine of the country inside and outside develops three different control modes: electro-hydraulic servo valve's control; adopted the pressure valve's control with speed controller; proportion valve's control of wide flux . Electro-hydraulic servo control's technology becomes an important constitute of modern time control technology as a bridge between the micro-electronics ,computer technology and electro-hydraulic control technology .For electro-hydraulic servo control's technology has the advantage of fine linearity, little deadband, high sensitivity, fine dynamic performance , rapid respond , high precision and so on, it is used in many fields. In addition to control technology, electro-hydraulic omnipotence test-machine adopted high-precision's force and displacement measurement system and computer's collection and disposal technology , reach and exceed over the electro universal material test-machine electro-hydraulic in function, electro-hydraulic universal material test-machine and all kinds of pressure test-machine have superority over others specially in great load fields.The paper is completed research of measurement and control system based on DSP under technology. The paper is designed a card with the data-collection conversion and control by adopting mainly TMS320F240 among the DSPs as kernel processor, with peripheric A/D and D/A circuit EPM7128's decode and latch circuit and ISA interface circuit.