CN-120686928-B - Paver electric heating control method and system

CN120686928BCN 120686928 BCN120686928 BCN 120686928BCN-120686928-B

Abstract

The invention discloses a paver electric heating control method and a paver electric heating control system, which belong to the technical field of engineering machinery, and based on paver electric heating element parameters, electric heating element initial temperature, target heating object initial temperature and target heating object working temperature, an optimal heating strategy for enabling an electric heating element to heat a target heating object from the initial temperature to the working temperature for the shortest time and the smallest energy consumption is determined, and the electric heating element is controlled to heat the target heating object according to the optimal heating strategy, so that the heating power consumption and the heating time of the electric heating element are considered, the condition that the electric heating element always works at the maximum power is avoided, the service life of equipment is prolonged, and the problems that the electric heating element cannot be effectively regulated in the heating process for a long time, the power consumption of the equipment is overhigh and the service life of the equipment is shortened are solved.

Inventors

HOU YUANYUAN
GAO LIANG
WU HAITAO
Ma Chenri
ZHANG MINGNIAN

Assignees

徐工集团工程机械股份有限公司道路机械分公司

Dates

Publication Date: 20260508
Application Date: 20250627

Claims (7)

1. An electric heating control method for a paver, which is characterized by comprising the following steps: acquiring parameters of an electric heating element of the paver, an initial temperature of the electric heating element, an initial temperature of a target heating object and a working temperature of the target heating object; the electrical heating element parameters comprise an element maximum allowable heating temperature and an element maximum operating voltage; Determining an optimal heating strategy for the electric heating element to heat the target heating object from the initial temperature to the operating temperature for a minimum duration and with minimum energy consumption based on the paver electric heating element parameters, the electric heating element initial temperature, the target heating object initial temperature and the operating temperature of the target heating object, comprising: heating a target heating object by adopting the maximum working voltage of the element; If the initial temperature of the electric heating element rises to a predetermined element temperature threshold, reducing the electric heating element operating voltage, comprising: acquiring a first heating time for heating a target heating object by an electric heating element under a current working condition by using an element maximum working voltage, so that the initial temperature of the electric heating element is increased to a predetermined element temperature threshold; Acquiring a second heating time for heating a target heating object by the electric heating element at normal temperature by using the maximum working voltage of the element, so that the initial temperature of the electric heating element is increased to a predetermined element temperature threshold; reducing the electric heating element operating voltage based on the first heating time, the second heating time, the predetermined element temperature threshold and an element operating voltage upper limit corresponding to the predetermined element temperature threshold; continuously heating the target heating object by adopting the reduced working voltage of the electric heating element until the temperature of the target heating object is increased to the working temperature; And controlling the electric heating element to heat the target heating object according to the optimal heating strategy.
2. The paving machine electrical heating control method of claim 1, wherein the predetermined component temperature threshold determination method comprises: Reducing the maximum allowable heating temperature of the element and the maximum working voltage of the element according to a certain gradient by taking the maximum allowable heating temperature of the element and the maximum working voltage of the element as references to form a heating upper limit value group comprising a plurality of element heating upper limit values and a working voltage upper limit value group comprising a plurality of element working voltage upper limit values; Based on the heating upper limit value group and the working voltage upper limit value group, calculating total time and total energy consumption for heating the target heating object from the initial temperature to the working temperature at normal temperature; and selecting an element heating upper limit value corresponding to the minimum heating time and total energy consumption as an element temperature threshold value.
3. The paver electric heating control method according to claim 2, wherein the calculating of the total time and total energy consumption for heating the target heating object from the initial temperature to the operating temperature at the normal temperature based on the heating upper limit value group and the operating voltage upper limit value group includes: cross-combining the heating upper limit value group and the working voltage upper limit value group; Heating the target heating object by the electric heating element at normal temperature with the maximum working voltage of the element, and reducing the working voltage of the electric heating element when the electric heating element is heated to the element heating upper limit value corresponding to each combination; reducing the working voltage of the low-electric heating element to the upper limit value of the element working voltage corresponding to each combination, and continuing to heat the target heating object until the target heating object is heated to the working temperature; And calculating the corresponding total time and total energy consumption of each combined heating process.
4. The paver electric heating control method of claim 1 wherein the reducing the electric heating element operating voltage based on the first heating time, the second heating time, the predetermined element temperature threshold, and the element operating voltage upper limit corresponding to the predetermined element temperature threshold comprises: Calculating a voltage correction coefficient according to the first heating time, the second heating time and a predetermined element temperature threshold; Calculating a correction voltage value by adopting a voltage correction coefficient and an element working voltage upper limit value corresponding to a predetermined element temperature threshold value; And reducing the maximum operating voltage of the element to a correction voltage value.
5. The paving machine electrical heating control method of claim 4, wherein calculating the voltage correction factor based on the first heating time, the second heating time, and the predetermined element temperature threshold comprises: the voltage correction factor is calculated using: ; Representing a voltage correction coefficient; Representing a target correction coefficient; Representing the correction reference coefficient; ; Representing a predetermined component temperature threshold value, Indicating the initial temperature of the electrical heating element at the current operating condition, Representing a first heating time; ; indicating the initial temperature of the electrical heating element at ambient temperature, Indicating a second heating time.
6. The method of claim 4, wherein calculating the corrected voltage value using the upper limit value of the element operating voltage corresponding to the voltage correction coefficient and the predetermined element temperature threshold value comprises: the correction voltage is calculated using the following: ; Representing a correction voltage; The voltage correction coefficient is represented by a reference number, An upper limit value of the element operation voltage corresponding to a predetermined element temperature threshold value is indicated.
7. An electric heating control system for a paving machine, comprising: The acquisition module is used for acquiring parameters of the electric heating element of the paver, the initial temperature of the electric heating element, the initial temperature of the target heating object and the working temperature of the target heating object; the processing module is used for determining an optimal heating strategy which enables the electric heating element to heat the target heating object from the initial temperature to the working temperature in the shortest time and has the minimum energy consumption based on the parameters of the electric heating element of the paver, the initial temperature of the electric heating element, the initial temperature of the target heating object and the working temperature of the target heating object; And the adjusting module is used for controlling the electric heating element to heat the target heating object according to the optimal heating strategy.

Description

Paver electric heating control method and system Technical Field The invention relates to an electric heating control method and system for a paver, and belongs to the technical field of engineering machinery. Background When paving asphalt pavement, the paver needs to heat the screed before or during paving operation to ensure construction quality. The heating principle of the screed plate is that the screed plate is used as a heated component, heat is required to be transferred to the component after the heating element is electrified and heated by the heating element, so that a temperature difference exists between the temperature of the heated component and the temperature of the heating element, and in the actual operation process, when the electric heating element is electrified continuously, the temperature of the heated component continuously rises, and the screed plate still does not reach the target temperature when the electric heating element reaches the maximum limit temperature possibly appears, and in this case, the electric heating element is very easy to damage. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides an electric heating control method and system for a paver, which take heating power consumption and heating time of an electric heating element into consideration, avoid the problem that the electric heating element always works at maximum power, prolong the service life of equipment, solve the problem that the current paver cannot effectively adjust the heating process, and enable the electric heating element to work at the maximum limit temperature for a long time, so that the power consumption of the equipment is overhigh and the service life is shortened. In order to solve the technical problems, the invention is realized by adopting the following technical scheme: in one aspect, the invention provides a paver electric heating control method, which comprises the following steps: acquiring parameters of an electric heating element of the paver, an initial temperature of the electric heating element, an initial temperature of a target heating object and a working temperature of the target heating object; determining an optimal heating strategy for enabling the electric heating element to heat the target heating object from the initial temperature to the working temperature in the shortest time and with the minimum energy consumption based on the parameters of the electric heating element of the paver, the initial temperature of the electric heating element, the initial temperature of the target heating object and the working temperature of the target heating object; And controlling the electric heating element to heat the target heating object according to the optimal heating strategy. Further, the electrical heating element parameters include an element maximum allowable heating temperature and an element maximum operating voltage. Still further, the determining an optimal heating strategy for the electric heating element to heat the target heating object from the initial temperature to the operating temperature for a minimum duration and with minimum energy consumption based on the paver electric heating element parameter, the electric heating element initial temperature, the target heating object initial temperature and the operating temperature of the target heating object comprises: heating a target heating object by adopting the maximum working voltage of the element; if the initial temperature of the electric heating element rises to a predetermined element temperature threshold, reducing the working voltage of the electric heating element; and continuing to heat the target heating object by adopting the reduced working voltage of the electric heating element until the temperature of the target heating object is increased to the working temperature. Still further, the method for determining the predetermined element temperature threshold includes: Reducing the maximum allowable heating temperature of the element and the maximum working voltage of the element according to a certain gradient by taking the maximum allowable heating temperature of the element and the maximum working voltage of the element as references to form a heating upper limit value group comprising a plurality of element heating upper limit values and a working voltage upper limit value group comprising a plurality of element working voltage upper limit values; Based on the heating upper limit value group and the working voltage upper limit value group, calculating total time and total energy consumption for heating the target heating object from the initial temperature to the working temperature at normal temperature; and selecting an element heating upper limit value corresponding to the minimum heating time and total energy consumption as an element temperature threshold value. Further, the calculating the total time and total energy consumption for heatin