Automatic Controllers for Hydraulically Powered Deicing-Chemical Spreaders.

摘要

Automatic ground-speed-oriented controllers for hydraulically powered deicing chemical spreaders were designed and manufactured to refine and simplify the spreading of deicing chemicals and abrasives. This report summarizes users'opinions of how these controllers have performed in the field. The format of the report is outlined:Section 1--Introduction;Section 2--Describes the methods used to control the spreading rate of hydraulic spreaders;Section 3--Describes users'evaluation of automatic controllers. This section is the focal point of the report;Section 4--Contains miscellaneous data about automatic controllers and about the users of automatic controllers;Section 5--Contains information about the manufacturers of automatic controllers;Section 6--Describes equipment which simplifies the calibration of automatic controllers.