Experimental Study On Fuzzy-Controlled Electronic Drainage System Of Sanitary Ware

Sanitary ware has become a symbol of modern life. Drainage, a vital accessory of sanitary ware, is widely used as well and with technological progress users have higher requirement on its operational performance. In allusion to the traditional mechanical drainage in the market, here in this paper the new concept of electronic drainage is put forward. The research and design of software and hardware for the electronic drainage, introduction of fuzzy control into the system and the control plan of electronic drainage with constant-temperature water inlet all combine to make possible the intelligent control of drainage of sanitary ware.In this paper the drainage for bathtub, a typical sanitary ware, is taken as an example of electronic drainage. Based on its function, electronic drainage could be divided into two generations:GenerationⅠproduct is to realize the function of water storage and drainage of the bathtub, adjustment of water level, overflow protection and display of water temperature, while GenerationⅡproduct is to add such functions as constant-temperature water inlet and intelligent control on water level and water temperature in the bathtub based on Generation I product. The research of this paper is based on the electronic drainage researching project of Kohler and my practical work. There is detailed discussion on the development background, design of software and hardware, key performance indicators and performance of key components of the GenerationⅠproduct. Given the large-inertial, lag-effect of non-linear complex system of water temperature control in bathtub, theory of fuzzy control is employed to explore the intelligent water temperature controller of GenerationⅡproduct. Tools of MATLAB/SIMULINK are also used to simulate the actual operation of the device. The designed controller is featured by simple structure, few parameters to be set, easy operation, convenient adjustment and better adaptability. The principle and method of the high-precision electronic drainage hereunder mentioned also applies to sanitary wares that are designed with functions of water storage and water temperature control.The discussion of this paper mainly covers the following aspects:1. In-depth introduction on the development of GenerationⅠelectronic drainage system based on analysis and assessment of different design solutions and on the final solution to the function and operational indicators of key components of Generation Ⅰproduct;2. Application of the theory of fuzzy control and exploration of water temperature control for GenerationⅡelectronic drainage; building of the mathematics models of fuzzy control for constant-temperature water inlet and water temperature & water level control of the bathtub;3. Research and development of rules of fuzzy control for constant-temperature water inlet and water temperature & water level control of the bathtub; and4. Building of simulation program by using the tool of SIMULINK of MATLAB, simulation test of the control program and analysis & comparison of simulation control effect in order to provide technical solution for the development of GenerationⅡelectronic drainage.In this paper there is detailed information on the technical solutions to GenerationⅠelectronic drainage system and control method of Generation II drainage system. Such solutions have been proved to be practical, reliable, easy for operation, intelligent and user-friendly etc.