CN108471271B - Projector sliding door motor control method and control device - Google Patents
Projector sliding door motor control method and control device Download PDFInfo
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- CN108471271B CN108471271B CN201810335596.9A CN201810335596A CN108471271B CN 108471271 B CN108471271 B CN 108471271B CN 201810335596 A CN201810335596 A CN 201810335596A CN 108471271 B CN108471271 B CN 108471271B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P31/00—Arrangements for regulating or controlling electric motors not provided for in groups H02P1/00 - H02P5/00, H02P7/00 or H02P21/00 - H02P29/00
Abstract
The invention discloses a projector sliding door motor control method, which comprises the following steps: collecting an environmental temperature value; obtaining a motor rotating speed value according to a prestored temperature-rotating speed relation table, or obtaining a motor frequency value according to a prestored temperature-frequency relation table; and controlling the sliding door motor to drive the sliding door to open according to the motor rotating speed value or the motor frequency value, or controlling the sliding door motor to drive the sliding door to close according to the motor rotating speed value or the motor frequency value. According to the invention, through the pre-stored temperature-rotating speed relation table or temperature-frequency relation table, the sliding door motor can be dynamically controlled according to different temperatures, and the electric sliding door of the projector can be ensured to be normally opened or closed at different temperatures.
Description
Technical Field
The invention relates to the field of projector sliding door control, in particular to a projector sliding door motor control method and a projector sliding door motor control device.
Background
The projector is also called a projector, is a device capable of projecting images or videos onto a curtain, can be connected with a computer, a DV and the like through different interfaces to play corresponding video signals, is widely used in families, offices, schools and entertainment places at present, and has different types such as CRT, LCD, DLP and the like according to different working modes.
In the existing projection equipment with the electric sliding door, a sliding door motor usually adopts fixed pulling-out torque to drive the sliding door to be opened and closed, and the running resistance of the sliding door can be increased sharply due to the change of characteristics of lubricating oil and the like of a sliding door track under the condition of different temperatures, so that the pulling-out torque of the motor is smaller than the resistance borne by the sliding door, and the sliding door can not be opened or closed normally. Therefore, it is very important to develop a method for dynamically controlling the opening or closing of the sliding door driven by the sliding door motor according to the temperature change.
Disclosure of Invention
In view of this, the present application provides a method for controlling a sliding door motor of a projector, which can dynamically control the sliding door motor according to different temperatures through a pre-stored temperature-rotation speed relationship table or temperature-frequency relationship table, and ensure that an electric sliding door of the projector can be normally opened or closed at different temperatures. In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a projector sliding door motor control method, comprising:
collecting an environmental temperature value;
obtaining a motor rotating speed value according to a prestored temperature-rotating speed relation table, or obtaining a motor frequency value according to a prestored temperature-frequency relation table;
and controlling the sliding door motor to drive the sliding door to open according to the motor rotating speed value or the motor frequency value, or controlling the sliding door motor to drive the sliding door to close according to the motor rotating speed value or the motor frequency value.
Further, the step of generating the temperature-rotation speed relation table comprises:
obtaining a temperature-resistance relation table, wherein the temperature is an ambient temperature value, and the resistance is the resistance borne by the total sliding stroke of the sliding door;
obtaining a resistance-pulling torque relation table, wherein the pulling torque is the output torque of a sliding door motor; obtaining a relation table of pulling-out torque-rotating speed, wherein the rotating speed is the steady-state rotating speed of the sliding door motor;
and obtaining a temperature-rotating speed relation table.
Further, the obtaining of the temperature-resistance relation table specifically includes: and under different environmental temperatures, acquiring the resistance borne by the total sliding stroke of the sliding door by adopting a thrust gauge to obtain a temperature-resistance relation table.
Further, the obtaining of the temperature-resistance relation table specifically includes: and respectively under different environmental temperature values, repeatedly adopting a thrustor to push the sliding door to open or close at a constant speed to obtain the maximum resistance value of the sliding door opening or closing under different environmental temperature values, and obtaining a temperature-resistance relation table according to each environmental temperature value and the maximum resistance value corresponding to the environmental temperature value.
Further, the table for obtaining the relationship between the resistance and the pulling-out moment is specifically as follows: setting a margin coefficient M, and enabling the magnitude of the motor pulling-out torque to be equal to the product of the resistance borne by the sliding total stroke of the sliding door and M under different environmental temperature values, wherein M is larger than 1, and obtaining a resistance-pulling-out torque relation table.
Further, the value of M is 1.5.
Further, the obtaining of the pulling-out torque-rotating speed relation table specifically comprises: the motor is operated at different rotating speeds, and the pulling-out torque of the sliding door motor is obtained by adopting a torque measuring device to obtain a pulling-out torque-rotating speed relation table.
Further, the step of generating the temperature-frequency relation table comprises:
obtaining a temperature-rotating speed relation table;
obtaining a temperature-frequency relation table according to the formula (I) and the temperature-rotating speed relation table
Wherein n is the steady-state rotating speed of the motor, P is the number of pole pairs of the motor, and f is the frequency of the motor.
Further, an ambient temperature value is collected by a temperature sensor.
A projector sliding door motor control apparatus, which can control a projector sliding door motor by the above method, comprising:
a data acquisition module: the system is used for collecting an environmental temperature value;
a data storage module: the device is used for prestoring a temperature-rotating speed relation table and/or a temperature-frequency relation table;
a data generation module: the motor control module is used for generating corresponding motor rotating speed or motor frequency according to the data acquired by the data acquisition module and the relation table stored by the data storage module;
a motor driving module: and the sliding door motor is used for controlling the sliding door motor to drive the sliding door to open or close according to the motor rotating speed or the motor frequency generated by the data generation module.
The invention provides a projector sliding door motor control method, which can realize dynamic control of a sliding door motor according to different temperatures through a prestored temperature-rotating speed relation table or a prestored temperature-frequency relation table, and ensure that an electric sliding door of a projector can be normally opened or closed at different temperatures; in the process of obtaining the temperature-rotating speed relation table or the temperature-frequency relation table, the temperature-resistance relation table and the pull-out torque-rotating speed relation table can be obtained, and the electric sliding door can be ensured to be normally opened or closed as long as the pull-out torque is larger than or equal to the sliding door resistance at each temperature value; through experiments, the existing projector with the electric sliding door cannot be opened or closed when the temperature is below zero centigrade, but the projector with the sliding door motor controlled by the invention still has normal opening and closing when the temperature is below-ten ℃; in addition, the invention can greatly improve the reliability of the product by improving the application environment range of the product, thereby improving the experience comfort level of the user.
Drawings
Fig. 1 is a flowchart of the method provided in example 1.
Fig. 2 is a block diagram of a control device according to embodiment 2.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1, the present embodiment provides a projector sliding door motor control method, including:
step S1: collecting an environmental temperature value;
step S2: obtaining a motor rotating speed value according to a prestored temperature-rotating speed relation table, or obtaining a motor frequency value according to a prestored temperature-frequency relation table;
step S3: and controlling the sliding door motor to drive the sliding door to open according to the motor rotating speed value or the motor frequency value, or controlling the sliding door motor to drive the sliding door to close according to the motor rotating speed value or the motor frequency value.
It should be noted that, the temperature-rotational speed relationship table and/or the temperature-frequency relationship table are generated before step S1, and then are pre-stored in the controller, in a specific embodiment, only the temperature-rotational speed relationship table, only the temperature-frequency relationship table, and both the temperature-rotational speed relationship table and the temperature-frequency relationship table are pre-stored, when the temperature-rotational speed relationship table and the temperature-frequency relationship table are pre-stored, a specific control manner (driving the sliding door motor by a corresponding rotational speed value in the temperature-rotational speed relationship table, or driving the sliding door motor by a frequency value in the temperature-frequency relationship table) can be pre-set, and the control manner can be switched during the operation, in this embodiment, the control can be realized by a PLC or other microprocessor with a control function, in addition, the temperature-rotation speed relation table and the temperature-frequency relation table may be expressed in other forms, such as a graph, and in practical application, only the corresponding relation between the surface parameters is prepared.
Specifically, the step of generating the temperature-rotation speed relation table comprises the following steps:
obtaining a temperature-resistance relation table, wherein the temperature is an ambient temperature value, and the resistance is the resistance borne by the total sliding stroke of the sliding door;
obtaining a resistance-pulling torque relation table, wherein the pulling torque is the output torque of a sliding door motor; obtaining a relation table of pulling-out torque-rotating speed, wherein the rotating speed is the steady-state rotating speed of the sliding door motor;
and obtaining a temperature-rotating speed relation table.
It should be noted that, in the specific implementation, the resistance-tachometer is obtained according to the resistance-pulling-out torque relationship table and the torque-tachometer, and the temperature-tachometer is obtained according to the temperature-resistance relationship table and the resistance-tachometer, wherein the pulling-out torque is larger than the resistance at each temperature value, and for the convenience of calculation and the regularity of the data relationship, the relationship between the pulling-out torque and the resistance may be set as follows: and if the resistance corresponding to a certain temperature value is F, the motor pulling-out torque is F + F1 or F multiplied by M at the temperature value, wherein F1 is more than 0, M is more than 1, and the values of F1 and M are the same for each temperature value.
Preferably, the table for obtaining the temperature-resistance relationship is specifically: and under different environmental temperatures, acquiring the resistance borne by the total sliding stroke of the sliding door by adopting a thrust gauge to obtain a temperature-resistance relation table.
Further, the table for obtaining the temperature-resistance relationship is specifically as follows: and respectively under different environmental temperature values, repeatedly adopting a thrustor to push the sliding door to open or close at a constant speed to obtain the maximum resistance value of the sliding door opening or closing under different environmental temperature values, and obtaining a temperature-resistance relation table according to each environmental temperature value and the maximum resistance value corresponding to the environmental temperature value.
It should be noted here that, at each environmental temperature value, 3 or more times of sliding door resistance measurement can be performed, each time of sliding door resistance measurement is to use a thrust gauge to push the sliding door to open or close at a constant speed and obtain the resistance received by the sliding door when the sliding door is opened or closed, and then the maximum resistance value is taken as the resistance received by the sliding door at the environmental temperature value, so that the sliding door can be ensured to be normally opened or closed under the corresponding pull-out torque of the sliding door motor.
Preferably, the table for obtaining the relationship between the resistance and the pulling-out torque is specifically as follows: setting a margin coefficient M, and enabling the magnitude of the motor pulling-out torque to be equal to the product of the resistance borne by the sliding total stroke of the sliding door and M under different environmental temperature values, wherein M is larger than 1, and obtaining a resistance-pulling-out torque relation table.
Preferably, M is 1.5.
It should be noted that, the specific value of the margin coefficient may be specifically set according to the actual situation, and when considering the value, the user may give an emphasis to factors such as the rail lubricant.
Preferably, the obtaining of the pulling torque-rotating speed relation table specifically comprises: the motor is operated at different rotating speeds, and the pulling-out torque of the sliding door motor is obtained by adopting a torque measuring device to obtain a torque-rotating speed relation table.
Specifically, the generating step of the temperature-frequency relation table includes:
obtaining a temperature-rotating speed relation table;
obtaining a temperature-frequency relation table according to the formula (I) and the temperature-rotating speed relation table
Wherein n is the steady-state rotating speed of the motor, P is the number of pole pairs of the motor, and f is the frequency of the motor.
In the specific implementation of the embodiment, the ambient temperature value can be collected through the temperature sensor.
Example 2
As shown in fig. 2, this embodiment provides a projector sliding door motor control device, which can control a projector sliding door motor by using the control method provided in embodiment 1, including
A data acquisition module: the system is used for collecting an environmental temperature value;
a data storage module: the device is used for prestoring a temperature-rotating speed relation table and/or a temperature-frequency relation table;
a data generation module: the motor control module is used for generating corresponding motor rotating speed or motor frequency according to the data acquired by the data acquisition module and the relation table stored by the data storage module;
a motor driving module: and the sliding door motor is used for controlling the sliding door motor to drive the sliding door to open or close according to the motor rotating speed or the motor frequency generated by the data generation module.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (5)
1. A projector sliding door motor control method is characterized by comprising the following steps:
collecting an environmental temperature value;
obtaining a motor rotating speed value according to a prestored temperature-rotating speed relation table, or obtaining a motor frequency value according to a prestored temperature-frequency relation table;
controlling the sliding door motor to drive the sliding door to open according to the motor rotating speed value or the motor frequency value, or controlling the sliding door motor to drive the sliding door to close according to the motor rotating speed value or the motor frequency value;
the generating step of the temperature-rotating speed relation table comprises the following steps:
obtaining a temperature-resistance relation table, wherein the temperature is an ambient temperature value, and the resistance is the resistance borne by the total sliding stroke of the sliding door;
obtaining a resistance-pulling torque relation table, wherein the pulling torque is the output torque of a sliding door motor; obtaining a relation table of pulling-out torque-rotating speed, wherein the rotating speed is the steady-state rotating speed of the sliding door motor;
obtaining a temperature-rotating speed relation table according to the temperature-resistance relation table, the resistance-pulling-out moment relation table and the pulling-out moment-rotating speed relation table;
the obtained temperature-resistance relation table specifically comprises the following steps: under different environmental temperatures, acquiring the resistance borne by the total sliding stroke of the sliding door by adopting a thrust gauge to obtain a temperature-resistance relation table;
the obtained resistance-pulling moment relation table specifically comprises the following steps: setting a margin coefficient M, and enabling the magnitude of the motor pulling-out torque to be equal to the product of the resistance borne by the sliding total stroke of the sliding door and M under different environmental temperature values, wherein M is larger than 1, so as to obtain a resistance-pulling-out torque relation table;
the obtained pulling torque-rotating speed relation table specifically comprises the following steps: enabling the motor to operate at different rotating speeds, and acquiring a pulling-out torque of the sliding door motor by adopting a torque measuring device to obtain a pulling-out torque-rotating speed relation table;
the generating step of the temperature-frequency relation table comprises the following steps:
obtaining a temperature-rotating speed relation table;
obtaining a temperature-frequency relation table according to the formula (I) and the temperature-rotating speed relation table
Wherein n is the steady-state rotating speed of the motor, P is the number of pole pairs of the motor, and f is the frequency of the motor.
2. The projector sliding door motor control method according to claim 1, wherein the obtaining of the temperature-resistance relation table specifically comprises: and respectively under different environmental temperature values, repeatedly adopting a thrustor to push the sliding door to open or close at a constant speed to obtain the maximum resistance value of the sliding door opening or closing under different environmental temperature values, and obtaining a temperature-resistance relation table according to each environmental temperature value and the maximum resistance value corresponding to the environmental temperature value.
3. The projector sliding door motor control method according to claim 1, wherein M is 1.5.
4. The projector sliding door motor control method according to claim 1, wherein the ambient temperature value is collected by a temperature sensor.
5. A projector sliding door motor control device is characterized by comprising
A data acquisition module: the data control module is used for acquiring an environmental temperature value and transmitting the acquired environmental temperature value to the data control module;
a data storage module: the device is used for prestoring a temperature-rotating speed relation table and/or a temperature-frequency relation table;
a data generation module: the motor control module is used for generating corresponding motor rotating speed or motor frequency according to the data acquired by the data acquisition module and the relation table stored by the data storage module;
a motor driving module: the sliding door motor is used for controlling the sliding door motor to drive the sliding door to open or close according to the motor rotating speed or the motor frequency generated by the data generating module;
the generating step of the temperature-rotating speed relation table comprises the following steps:
obtaining a temperature-resistance relation table, wherein the temperature is an ambient temperature value, and the resistance is the resistance borne by the total sliding stroke of the sliding door;
obtaining a resistance-pulling torque relation table, wherein the pulling torque is the output torque of a sliding door motor; obtaining a relation table of pulling-out torque-rotating speed, wherein the rotating speed is the steady-state rotating speed of the sliding door motor;
obtaining a temperature-rotating speed relation table according to the temperature-resistance relation table, the resistance-pulling-out moment relation table and the pulling-out moment-rotating speed relation table;
the obtained temperature-resistance relation table specifically comprises the following steps: under different environmental temperatures, acquiring the resistance borne by the total sliding stroke of the sliding door by adopting a thrust gauge to obtain a temperature-resistance relation table;
the obtained resistance-pulling moment relation table specifically comprises the following steps: setting a margin coefficient M, and enabling the magnitude of the motor pulling-out torque to be equal to the product of the resistance borne by the sliding total stroke of the sliding door and M under different environmental temperature values, wherein M is larger than 1, so as to obtain a resistance-pulling-out torque relation table;
the obtained pulling torque-rotating speed relation table specifically comprises the following steps: enabling the motor to operate at different rotating speeds, and acquiring a pulling-out torque of the sliding door motor by adopting a torque measuring device to obtain a pulling-out torque-rotating speed relation table;
the generating step of the temperature-frequency relation table comprises the following steps:
obtaining a temperature-rotating speed relation table;
obtaining a temperature-frequency relation table according to the formula (I) and the temperature-rotating speed relation table
Wherein n is the steady-state rotating speed of the motor, P is the number of pole pairs of the motor, and f is the frequency of the motor.
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| CN113866635B (en) * | 2021-12-01 | 2022-03-01 | 山东蓝湾新材料有限公司 | Method for determining motor fault occurrence time in chemical equipment |
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