The Research Of Wind Chamber Air Blower Performance Test Equipment Automatic Control System

The article have recommended an auto-testing and auto-controlling system for the air-blower performance in air blower room by the computer, the system is based on the standard AMCA210-74 "a laboratory's method of confirming the air-blower's specified performance test ". On already existed experimental equipment, we select suitable stepping motor, and according to the stepping motor we select the performance good monolithic integrated circuit and the chips for controlling and driving. By the software and hardware's design of driving and controlling, to regulate the air blower performance test operation's working condition.In addition,above the frequency changer, uses VB to carry on the programming, after the debugging, realizes the air-blower rotational speed automatic control. And fully uses the original automatic gathering system, then connects the automatic control system and the automatic gathering system, finally realized the entire testing automation and the centralization.This system uses the development platform which many kinds of programming software unifies, it has solved the traditional programming language well on hardware bottom, correspondence connection, agreement and some signal processing, statistical analysis, curve fitting programs the complex flaw, strengthened the system stability. The friendly Windows operation contact surface, improved the test system interaction; Based on the graph programming way, enhanced the system development efficiency, greatly reduced the development cycle. The automaticity is high, moves several mice then to complete the entire testing, and obtains the integrity the test report.This topic proposed based on the automatic control theory and the test automation technology development air blower performance test computer automatic control and the automatic gathering system, the synthesis applies multi-disciplinary new knowledge, the new achievement. Debugs at the experiment, the system movement reliable, the test data is accurate, can adapt the air blower performance control and the test request.