| This objection is from the CATARC 48" chassis dynamometer research topics. Electrical dynamometer is the equipment used for professional automotive indoor testing, vehicle and spare parts development, with high precision, fast response, resistance and inertia analog functions. So this test equipment have a high tech-nical requirements, in order to meet these requirements, The calibration for the parameters and performance of the equipment is essential. The purpose of this paper is to make in-depth research for the structural features and technical characteristics of chassis dynamometer, provide the calibration method of this equipment.To achieve this goal, we should make a detail analysis to structure characteristics, technical features of chassis dynamometers first to understand the principles of the equipment and load testing principles. What's more, we have to discovering the various factors that influent the accuracy of the tests. These factors will be grouped into three categories: electric chassis dynamometer's basic parameters, system characteristics and experimental features.Basic parameters of which is the diameter of the dynamometer and the run-out of the roller, speed accu-racy, precision traction; system characteristics of a system of traction signal response time, based on inertia, parasitic friction; experimental features refers to the chassis dynamometer road load simulation capability. After the analysis of performance infect by various factors and causes, we have design the correspond-ing calibration methods, and debugging one by one. Through there are a large number of tests data, we have to study these parameters to complete the calibration work.Finally, confirmatory tests carried out specifically on the determination to verify the reliability of the results. |
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