Intelligent sliding bearing capable of adjusting viscosity of lubricating fluid automatically and control method thereof

Abstract

The invention discloses a method for controlling an intelligent sliding bearing capable of adjusting the viscosity of lubricating fluid automatically, which belongs to the technical field of mechanical design and automatic control. The bearing makes magnetic fluid (5) held between a rotating shaft (6) and a bearing inner bush (7) through a sealing structure. The method firstly determines a coil control current of the rotating shaft when the bearing friction torque is minimum under different rotating speeds and the condition of the born load through a series of tests, and at this time the size of the control current is the optimal control current under the condition. And then according the test result the method establishes a database of the optimal control current aiming at the rotating speed and the born load condition. Finally in the actual application, a force sensor and a rotating speed sensor are used to measure the rotating shaft speed and the born load under an actual work condition, and according to the result the database is inquired, thus an adjusting coil (4) is used to control the current, so that the viscosity of the magnetic fluid (5) is automatically adapted to the work condition, and the friction power consumption and waste are reduced.

Description

Technical field [0001] The invention involves a control method of intelligent sliding bearing with an automatic adjustment of lubricating lubrication viscosity, which belongs to the field of mechanical design and automatic control technology. Background technique [0002] Sliding bearing is a very widely used bearing in the industrial field. It has the advantages of strong carrying capacity, high rotation accuracy, stable operation, and good buffer absorption..].The viscosity of lubricating fluid has an important impact on the sliding bearings with liquid lubrication.Too low viscosity of lubricating liquid can cause insufficient bearing capacity of lubricating oil film, cause direct mechanical contact between the surface of the parts, increase friction and wear, and even cause catastrophic accidents.Excessive viscosity of lubricants will increase frictional loss and heat, reduce mechanical efficiency.Therefore, for the sliding bearings of liquid lubrication, there is a suitable ...

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Problems solved by technology

However, this article only theoretically analyzed the performance of electrorheological fluid bearings, and did not give a specific design plan

Moreover, the current electrorheological fluid has not yet met the requirements of engineering applications due to defects in stability, shear strength and operating temperature range.

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