Function Artillery Fire Development And Load Sensitive Hydraulic Control Multi-channel Proportional Valve Testing

Generally speaking, this thesis is combined with two parts: one part is concerning water monitor, trying to put forward a monitor to meet the demand of modern society. After a long investigation on the progress of domestic and internatianal, the author designs the drive system, electrical and mechanical. The mechanical system consists of the body of the minotor and the gear system which drives the monitor involved in horizontal plain and vertical plain and changes the working mode of the nozzle.The electrical system is based on the single-chip-microcomputer AT89C52, which give orders to the BLDCM to run faster or slower and to run reversly. The other part has taken several tests to get eough data to show the performance of the Load-sensitive Hydraulic-control Multiport Vavle.The main content is as follows:Chapter 1 introduces the background information, and the status of present research conditions of domestic and international water cannon and its control technique, points out the shortage of them, and puts forward the purpose of the research. Meanwhile it elaborates on the test of. the Load-sensitive Hydraulic-control Multiport Vavle.Chapter 2 makes an analysis of the structure of the water cannon, puts forward an water cannon motive to spread to move a medium key to decelerate an organization design project, built up water cannon to spread dynamic basic model, and the detailed design computed to change a concrete size data of decelerate the organization.Chapter 3 introduces the structure of BLDCM and traces the workings principle of BLDCM. Based on this foundation, it takes the BLDCM as the main motive machine, uses the AT89C52 to design the small power and large current electrical circuit to drive the motor. The corresponding circuit includes power supply circuit, current examination circuit, watchdog circuit and motor speed-regulating circuit etc.Chapter 4 designs the system of software to making the corresponding hardware working. It is composed of initial program, motor-driving program, velocity-displaying program and watchdog program.Chapter 5 has taken a series of experiments as introduceing the method of the performance test of the load-sensitive hydraulic-control multiway valves, and it states the test result and the relevant of result analysis.Chapter 6 sums on the result of the research, carrys on an outlook to the development foreground of this title. Also it elaborates some placec where needs to be improved.