3 research outputs found
An intelligent fault detection system for a heat pump installation based on a geothermal heat exchanger
The heat pump with geothermal exchanger is one of the best methods to heat up a building. The heat exchanger is an element with high probability of failure due to the fact that it is an outside construction and also due to its size. In the present study, a novel intelligent system was designed to detect faults on this type of heating equipment. The novel approach has been successfully empirically tested under a real dataset obtained during measurements of one year. It was based on classification techniques with the aim of detecting failures in real time. Then, the model was validated and verified over the building; it obtained good results in all the operating conditions ranges
Π€ΠΎΡΠΌΡΠ²Π°Π½Π½Ρ Π΅ΡΠ°Π»ΠΎΠ½Π½ΠΎΡ ΠΌΠΎΠ΄Π΅Π»Ρ Π΄Π»Ρ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΎΠ±Π΅ΡΠ½Π΅Π½ΠΎΡ Π΄ΠΈΠ½Π°ΠΌΡΠΊΠΈ Π² Π·Π°Π΄Π°ΡΠ°Ρ ΠΊΠ΅ΡΡΠ²Π°Π½Π½Ρ ΠΏΡΠ΄Π²ΠΎΠ΄Π½ΠΈΠΌΠΈ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ°ΠΌΠΈ
Main requirements to the systems of automatic control of underwater complexes are specified. Main points of the synthesis of control systems by the method of inverse dynamics are given. The drawbacks of the method of inverse dynamics are defined, which consist in the limiting of the choice of the structure of a reference model and the necessity of bringing a mathematical model of the object of control to the view of a reference model.A mathematical model of an underwater complex is developed for the synthesis and study of the systems of its control that simulates a one-dimensional motion of an underwater vehicle under conditions of perturbing influence of a tether cable.Impossibility of the use of the method of inverse dynamics in the classic form for the synthesis of automatic control systems of underwater complexes is determined because their mathematical models contain elements that are set in arbitrary form.The method of inverse dynamics was improved by applying the principle of decomposition of a reference model, which boils down to its formation as a set of reference submodels based on the actual structure of an object.Decomposition of a reference model makes it possible to synthesize highβprecision control systems of underwater complexes by the method of inverse dynamics and to set reference submodels of dynamics of phase coordinates of an object in the form of arbitrary functions of time.Automatic control system of a one-dimensional motion of an underwater complex was synthesized by the method of inverse dynamics using the principle of decomposition of a reference model. The author proposed three variants of a reference model of an automatic control system. The first variant makes it possible not to execute conversion of a mathematical model of the object to the view of a reference model. The second and the third variants are formed on the basis of the structure of a mathematical model of an object, presented in the form of Cauchy. This allows setting the dynamics of transition processes for each phase coordinate of the object in the form, accordingly, of differential equations of the first order and arbitrary functions of time.Computer simulation of an automatic control system revealed that the transitional process of eliminating an error of the controlled magnitude corresponds to the reference one. After eliminating the error, the controlled magnitude strictly follows the set one without delay.Π‘ΠΎΡΡΠ°Π²Π»Π΅Π½Π° ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠ°Ρ ΠΌΠΎΠ΄Π΅Π»Ρ ΠΏΠΎΠ΄Π²ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ°, ΠΊΠΎΡΠΎΡΠ°Ρ ΡΠΎΠ΄Π΅ΡΠΆΠΈΡ Π½Π΅Π»ΠΈΠ½Π΅ΠΉΠ½ΡΠ΅ ΡΠ»Π΅ΠΌΠ΅Π½ΡΡ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΠΏΡΠΈΡΠΎΠ΄Ρ. ΠΠΎΠΊΠ°Π·Π°Π½Π° Π½Π΅Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΌΠ΅ΡΠΎΠ΄Π° ΠΎΠ±ΡΠ°ΡΠ½ΠΎΠΉ Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ Π΄Π»Ρ ΡΠΈΠ½ΡΠ΅Π·Π° Π²ΡΡΠΎΠΊΠΎΡΠΎΡΠ½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΡΠ°ΠΊΠΈΠΌΠΈ ΠΎΠ±ΡΠ΅ΠΊΡΠ°ΠΌΠΈ. Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½ ΠΏΡΠΈΠ½ΡΠΈΠΏ Π΄Π΅ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΈ Π΄Π»Ρ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΡΠ°Π»ΠΎΠ½Π½ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ, ΠΊΠΎΡΠΎΡΡΠΉ Π΄Π°Π΅Ρ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡΡ ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°ΡΡ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΏΠΎΠ΄Π²ΠΎΠ΄Π½ΡΠΌΠΈ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ°ΠΌΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΎΠ±ΡΠ°ΡΠ½ΠΎΠΉ Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠΈ. Π Π°Π±ΠΎΡΠΎΡΠΏΠΎΡΠΎΠ±Π½ΠΎΡΡΡ ΠΏΡΠΈΠ½ΡΠΈΠΏΠ° Π΄Π΅ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΠΈΠΈ ΠΏΡΠΎΠ²Π΅ΡΠ΅Π½Π° ΡΠΈΠ½ΡΠ΅Π·ΠΎΠΌ ΡΠΈΡΡΠ΅ΠΌΡ ΡΠΏΡΠ°Π²Π»Π΅Π½ΠΈΡ ΠΏΠΎΠ΄Π²ΠΎΠ΄Π½ΡΠΌ Π°ΠΏΠΏΠ°ΡΠ°ΡΠΎΠΌ ΠΊΠ°ΠΊ ΡΠΎΡΡΠ°Π²Π»ΡΡΡΠ΅ΠΉ ΠΏΠΎΠ΄Π²ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ°Π‘ΠΊΠ»Π°Π΄Π΅Π½ΠΎ ΠΌΠ°ΡΠ΅ΠΌΠ°ΡΠΈΡΠ½Ρ ΠΌΠΎΠ΄Π΅Π»Ρ ΠΏΡΠ΄Π²ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΡ, ΡΠΊΠ° ΠΌΡΡΡΠΈΡΡ Π½Π΅Π»ΡΠ½ΡΠΉΠ½Ρ Π΅Π»Π΅ΠΌΠ΅Π½ΡΠΈ Π³ΡΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΡΡΠ½ΠΎΡ ΠΏΡΠΈΡΠΎΠ΄ΠΈ. ΠΠΎΠΊΠ°Π·Π°Π½ΠΎ Π½Π΅ΠΌΠΎΠΆΠ»ΠΈΠ²ΡΡΡΡ Π·Π°ΡΡΠΎΡΡΠ²Π°Π½Π½Ρ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΎΠ±Π΅ΡΠ½Π΅Π½ΠΎΡ Π΄ΠΈΠ½Π°ΠΌΡΠΊΠΈ Π΄Π»Ρ ΡΠΈΠ½ΡΠ΅Π·Ρ Π²ΠΈΡΠΎΠΊΠΎΡΠΎΡΠ½ΠΈΡ
ΡΠΈΡΡΠ΅ΠΌ Π°Π²ΡΠΎΠΌΠ°ΡΠΈΡΠ½ΠΎΠ³ΠΎ ΠΊΠ΅ΡΡΠ²Π°Π½Π½Ρ ΡΠ°ΠΊΠΈΠΌΠΈ ΠΎΠ±βΡΠΊΡΠ°ΠΌΠΈ. Π ΠΎΠ·ΡΠΎΠ±Π»Π΅Π½ΠΎ ΠΏΡΠΈΠ½ΡΠΈΠΏ Π΄Π΅ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΡΡ Π΄Π»Ρ ΡΠΎΡΠΌΡΠ²Π°Π½Π½Ρ Π΅ΡΠ°Π»ΠΎΠ½Π½ΠΎΡ ΠΌΠΎΠ΄Π΅Π»Ρ, ΡΠΊΠΈΠΉ Π΄Π°Ρ Π·ΠΌΠΎΠ³Ρ ΡΠΈΠ½ΡΠ΅Π·ΡΠ²Π°ΡΠΈ ΡΠΈΡΡΠ΅ΠΌΠΈ ΠΊΠ΅ΡΡΠ²Π°Π½Π½Ρ ΠΏΡΠ΄Π²ΠΎΠ΄Π½ΠΈΠΌΠΈ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ°ΠΌΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΎΠ±Π΅ΡΠ½Π΅Π½ΠΎΡ Π΄ΠΈΠ½Π°ΠΌΡΠΊΠΈ. ΠΡΠ°ΡΠ΅Π·Π΄Π°ΡΠ½ΡΡΡΡ ΠΏΡΠΈΠ½ΡΠΈΠΏΡ Π΄Π΅ΠΊΠΎΠΌΠΏΠΎΠ·ΠΈΡΡΡ ΠΏΠ΅ΡΠ΅Π²ΡΡΠ΅Π½ΠΎ ΡΠΈΠ½ΡΠ΅Π·ΠΎΠΌ ΡΠΈΡΡΠ΅ΠΌΠΈ ΠΊΠ΅ΡΡΠ²Π°Π½Π½Ρ ΠΏΡΠ΄Π²ΠΎΠ΄Π½ΠΈΠΌ Π°ΠΏΠ°ΡΠ°ΡΠΎΠΌ ΡΠΊ ΡΠΊΠ»Π°Π΄ΠΎΠ²ΠΎΡ ΠΏΡΠ΄Π²ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡ