WO2024012074A1

WO2024012074A1 - Contracting-brake control method, electronic device and storage medium

Info

Publication number: WO2024012074A1
Application number: PCT/CN2023/096673
Authority: WO
Inventors: 曹晨晨; 白银河; 张志全
Original assignee: 苏州汇川控制技术有限公司
Priority date: 2022-07-15
Filing date: 2023-05-26
Publication date: 2024-01-18
Also published as: CN115108489B; CN115108489A

Abstract

A contracting-brake control method, an electronic device and a storage medium. The contracting-brake control method comprises: after a contracting-brake release instruction is received, controlling, by means of a first contracting-brake release control policy, an output voltage of a contracting-brake power source to be reduced from a maintenance voltage to a first contracting-brake release output voltage; when it is detected that a brake shoe starts to move, controlling, by means of a second contracting-brake release control policy, the output voltage of the contracting-brake power source to be adjusted from the first contracting-brake release output voltage to a second contracting-brake release output voltage; and when it is detected that the brake shoe is in place or the speed of the brake shoe is zero, controlling the output voltage of the contracting-brake power source to be adjusted from the second contracting-brake release output voltage to zero, wherein the maintenance voltage is used for keeping the brake shoe of a contracting brake in a pull-in state, and a first contracting-brake release control time is less than a second contracting-brake release control time.

Description

Brake control method, electronic device and storage medium

This application claims priority to the Chinese patent application with application number 202210833611.9 filed on July 15, 2022, the entire content of which is incorporated into this application by reference.

Technical field

The present application relates to the field of safety braking technology, and in particular to a brake control method, electronic equipment and storage media.

Background technique

The main safety braking device of the elevator is the holding brake, which can ensure the safe and stable operation of the elevator. At present, when the elevator is braking, the brake contactor is usually directly controlled to disconnect. At this time, the power supply to the brake brake is immediately cut off. The electromagnet coil in the brake brake will immediately lose power, resulting in a magnetic force that is less than the spring force, and the brake shoe Under the action of the tension of the spring, it is separated from the iron core, so that the brake shoe of the brake brake tightly hugs the brake wheel, thereby realizing elevator braking. However, the speed of the brake shoe when hugging the brake wheel is relatively large, which usually produces a large The noise affects the user experience.

technical problem

The main purpose of this application is to provide a brake control method, electronic equipment and storage medium, aiming to solve the technical problem of high noise in elevator operation.

Technical solutions

In order to achieve the above purpose, this application provides a brake control method. The brake control method includes:

After receiving the brake release command, the output voltage of the brake power supply is controlled from the maintenance voltage to the first brake release output voltage through the first brake release control strategy;

When it is detected that the brake shoe begins to move, the output voltage of the brake power supply is controlled to be adjusted from the first brake release output voltage to the second brake release output voltage through the second brake release control strategy;

When it is detected that the brake shoe is in place or the brake shoe speed is zero, the output voltage of the brake power supply is controlled to be adjusted to zero by the second brake release output voltage;

Wherein, the maintenance voltage is used to maintain the brake shoe of the brake in a pull-in state, and the first brake release control time is shorter than the second brake release control time.

In order to achieve the above purpose, this application also provides a brake control method. The brake control method includes:

After receiving the brake pull-in command, the output voltage of the brake power supply is controlled to increase to the first brake pull-in output voltage through the first brake pull-in control strategy;

When it is detected that the brake shoe begins to move, the second brake pull-in control strategy is used to control the output voltage of the brake power supply to be adjusted from the first brake pull-in output voltage to the second brake pull-in output voltage;

When it is detected that the brake shoe is in place or the brake shoe speed is zero, the output voltage of the brake power supply is controlled to be adjusted from the second brake pull-in output voltage to the strong excitation voltage and maintained;

Wherein, the strong excitation voltage is used to ensure reliable pull-in of the brake, and the first brake pull-in control time is shorter than the second brake pull-in control time.

In order to achieve the above object, this application also provides a brake control device, which includes:

The first voltage control module is configured to control the output voltage of the brake power supply from the maintenance voltage to the first brake release output voltage through the first brake release control strategy after receiving the brake release command;

The second voltage control module is used to control the output voltage of the brake power supply from the first brake release output voltage to the second brake through the second brake release control strategy when detecting that the brake shoe begins to move. Release the output voltage;

A third voltage control module, configured to control the output voltage of the brake power supply to adjust to zero from the second brake release output voltage when it is detected that the brake shoe is in place or the brake shoe speed is zero;

To achieve the above object, this application also provides a brake control device, which includes:

The first voltage control module is configured to, after receiving the brake pull-in command, control the output voltage of the brake power supply to increase to the first brake pull-in output voltage through the first brake pull-in control strategy;

A second voltage control module, configured to control the output voltage of the brake power supply from the first brake pull-in output voltage to the second brake pull-in output voltage through a second brake pull-in control strategy when detecting that the brake shoe begins to move. Brake pull-in output voltage;

The third voltage control module is used to control the output voltage of the brake power supply to adjust from the second brake pull-in output voltage to the strong excitation voltage when it detects that the brake shoe is in place or the brake shoe speed is zero. maintain;

This application also provides an electronic device. The electronic device is a physical device. The electronic device includes: a memory, a processor, and the brake control system stored on the memory and operable on the processor. When the program of the brake control method is executed by the processor, the steps of the brake control method as described above can be implemented.

The present application also provides a computer-readable storage medium. The computer-readable storage medium stores a program for implementing a brake control method. When the program for the brake control method is executed by a processor, the above-mentioned brake control method is implemented. Steps of brake control method.

beneficial effects

This application provides a brake control method, electronic equipment and storage medium. Compared with the technical means in the prior art of directly controlling the disconnection of the brake contactor to brake the elevator, this application receives the brake release After the instruction, the first brake release control strategy is used to control the output voltage of the brake power supply from the maintenance voltage to the first brake release output voltage. At this time, due to the decrease in the output voltage of the brake power supply, the electromagnetic force decreases. At this time, the brake shoe begins to release under the joint action of electromagnetic force and spring tension, that is, it starts to move. The maintenance voltage is used to maintain the brake shoe of the brake in the pull-in state, and the first brake The release control time is less than the second brake release control time; when it is detected that the brake shoe starts to move, the output voltage of the brake power supply is controlled by the second brake release control strategy to be adjusted from the first brake release output voltage to The second brake releases the output voltage to control the electromagnetic force not to be too large during the movement of the brake shoe, so that the movement speed of the brake shoe when holding the brake wheel will not be too large. When the brake shoe is detected to be in place or When the brake shoe speed is zero, the output voltage of the brake power supply is adjusted from the second brake release output voltage to zero to complete the brake release, thus overcoming the problem that the brake shoe is holding the brake wheel during elevator braking. The technical defect is that when the speed is larger, which will produce larger noise, the noise when the elevator is running is reduced.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly explain the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to describe the embodiments or the prior art. Obviously, for those of ordinary skill in the art, It is said that other drawings can also be obtained based on these drawings without exerting creative work.

Figure 1 is a schematic flow chart of the first embodiment of the brake control method of the present application;

Figure 2 is a schematic diagram of the changes in the output voltage of the brake power supply and the movement speed of the brake shoe during the movement of the elevator in one implementation of the present application;

Figure 3 is a schematic diagram of the changes in the output voltage of the brake power supply and the movement speed of the brake shoe during the movement of the elevator in another implementation of the present application;

Figure 4 is a schematic flow chart of the second embodiment of the brake control method of the present application;

Figure 5 is a schematic diagram of the equipment structure of the hardware operating environment involved in the brake control method in the embodiment of the present application.

The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings.

Embodiments of the invention

In order to make the above objects, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without any creative work shall fall within the scope of protection of this application.

Embodiment 1

An embodiment of the present application provides a brake control method. In the first embodiment of the brake control method of the present application, the brake control method includes:

Step S10, after receiving the brake release command, control the output voltage of the brake power supply from the maintenance voltage to the first brake release output voltage through the first brake release control strategy;

Step S20, when it is detected that the brake shoe begins to move, the output voltage of the brake power supply is controlled to be adjusted from the first brake release output voltage to the second brake release output voltage through the second brake release control strategy;

Step S30, when it is detected that the brake shoe is in place or the brake shoe speed is zero, control the output voltage of the brake power supply to adjust from the second brake release output voltage to zero;

In this embodiment, it should be noted that the brake includes a brake power supply, a static iron core, a spring, a brake shoe and a brake wheel. Currently, when the elevator is in a stationary state, the brake shoe is in a released state. The brake power supply has no output voltage, and the brake shoe contacts the brake wheel under the action of the spring force; when the elevator needs to move, the brake power supply will generate a strong exciting voltage, thereby generating a corresponding electromagnetic force. Under the combined action of the forces, the brake shoe accelerates from the brake wheel to the static iron core, thereby completing the reliable closing of the brake. Next, the brake power supply will generate a maintaining voltage to maintain the brake shoe in the closing state; when the elevator When braking is required, the brake contactor will be directly controlled to open. At this time, the brake power supply has no output voltage. The brake shoe accelerates from the static iron core to the brake wheel under the action of the spring force, and the brake shoe contacts the brake wheel. , complete the brake release, thereby realizing the elevator braking, and the brake shoe returns to the released state.

Therefore, when the current brake brake is braking, the brake contactor is usually directly controlled to open. At this time, the power supply to the brake brake is immediately cut off. The electromagnet coil in the brake brake will immediately lose power, and the brake shoe will Under the action of the spring force, it is separated from the static iron core, and continues to accelerate, and finally hits the brake wheel at a relatively large speed, thereby realizing elevator braking. Since the brake shoe has a large speed when it hits the brake wheel, Therefore, a lot of noise will be generated, affecting the user experience.

As an example, steps S10 to S20 include: controlling the output voltage of the brake power supply from the maintenance voltage to the first brake release output voltage through the first brake release control strategy, wherein when the brake power supply When the output voltage is the maintaining voltage, the electromagnetic force generated by the output voltage is greater than or equal to the spring force, thereby maintaining the brake shoe in the pull-in state. When the output voltage of the brake power supply is the first brake release output voltage, The electromagnetic force generated by the output voltage is smaller than the spring force, so the brake shoe will start to move from the static iron core to the brake wheel under the joint action of the electromagnetic force and the spring force; after detecting that the brake shoe starts to move, The second brake release control strategy controls the output voltage of the brake power supply to be adjusted from the first brake release output voltage to the second brake release output voltage, so as to control the acceleration of the brake shoe during movement, The movement speed of the brake shoe is controlled not to be too large when it contacts the brake wheel. When it is detected that the brake shoe is in place or the brake shoe speed is zero, the output voltage of the brake power supply is controlled by the second brake The release output voltage is adjusted to zero; wherein the maintenance voltage is used to maintain the brake shoe of the brake in the pull-in state, and the first brake release control time is shorter than the second brake release control time. Since the movement speed of the brake shoe when contacting the brake wheel will not be too large, excessive noise can be avoided during elevator braking.

Wherein, the second brake release control strategy is used to control the output voltage of the brake power supply to be adjusted from the first brake release output voltage to the second brake release output voltage, including:

Step A10, according to the output voltage rising curve when the brake is released, control the output voltage of the brake power supply to increase from the first brake release output voltage to the second brake release output voltage;

In step A20, during the process in which the output voltage of the brake power supply is adjusted from the first brake release output voltage to zero, the brake shoe first performs an acceleration movement and then deceleration movement to the brake wheel.

As an example, steps A10 to A20 include: controlling the output voltage of the brake power supply to increase from the first brake release output voltage to the second brake according to the output voltage rise curve when the brake is released. When the output voltage is released, the electromagnetic force generated by the output voltage gradually increases. The electromagnetic force is first less than the spring force, then equal to the spring force, and finally greater than the spring force. Therefore, the output voltage of the brake power supply is released by the first brake. During the process of adjusting the voltage to zero, the brake shoe first accelerates and then decelerates to the brake wheel. As an example, referring to Figure 2, point D is the maintenance voltage, point C is the first brake release output voltage, point B is the second brake release output voltage, and the CB segment curve is the output voltage. Voltage rise curve, as the output voltage increases, the electromagnetic force gradually increases. The electromagnetic force is first less than the spring force, then equal to the spring force, and finally greater than the spring force. The brake shoe first accelerates and then decelerates. The brake shoe speed First increase and then decrease, the movement speed of the brake shoe when contacting the brake wheel is small, and can even approach zero, thus reducing the noise generated during elevator braking to the greatest extent.

Step B10, according to the output voltage drop curve when the brake is released, control the output voltage of the brake power supply to decrease from the first brake release output voltage to the second brake release output voltage;

In step B20, while the output voltage of the brake power supply is adjusted from the first brake release output voltage to zero, the brake shoe slowly accelerates to move to the brake wheel.

As an example, steps B10 to B20 include: controlling the output voltage of the brake power supply to decrease from the first brake release output voltage to the second brake according to the output voltage drop curve when the brake is released. Release the output voltage. At this time, by controlling the slope of the output voltage drop curve, the electromagnetic force generated by the output voltage can be controlled to slowly decrease. The spring force is greater than the electromagnetic force, and the resultant force generated by the spring force and the electromagnetic force will slowly increase, and the brake shoe The movement acceleration will slowly increase, so in the process of the output voltage of the brake power supply being adjusted from the first brake release output voltage to zero, the brake shoe slowly accelerates to the brake wheel, which can ensure that the brake shoe contacts The movement speed of the brake wheel will not be too large. As an example, refer to Figure 3, in which point D is the maintenance voltage, point C is the first brake release output voltage, point B is the second brake release output voltage, and the CB segment curve is the From the above output voltage drop curve, it can be seen that the slope of the output voltage drop curve is small, so the movement acceleration of the brake wheel will only increase slowly, so the brake shoe will accelerate slowly. Although the brake shoe is accelerating, due to the acceleration Not large. Although the movement speed of the brake shoe will not approach 0 when it finally contacts the brake wheel, the movement speed of the brake shoe will not be too large. Compared with directly cutting off the brake power supply for elevator braking, the brake The movement speed of the tiles is smaller, thus reducing the noise generated when the elevator brakes.

Referring further to Figure 2, as an example, the electromagnetic force generated by the release of the output voltage of the first brake can be equal to the spring force. At this time, the acceleration corresponding to point C is exactly 0, and the brake shoe of the CB section is undergoing slow acceleration motion throughout the entire process; The electromagnetic force generated by the release of the output voltage of the first brake can also be greater than the spring force. At this time, the acceleration corresponding to point C is greater than 0, and the brake shoe of the CB section is undergoing slow acceleration movement throughout the whole process; the electromagnetic force generated by the release of the output voltage of the first brake The electromagnetic force can also be smaller than the spring force. At this time, there is no acceleration of the brake shoe at point C. The brake shoe in section CB is stationary for a period of time, and then the output voltage gradually increases. When the electromagnetic force generated by the increased output voltage is equal to the spring force, the brake shoe The tile begins to move with slow acceleration.

In another embodiment, during the brake release stage, different voltages can be used to reduce the frequency, and the output voltage of the brake power supply can be controlled in a multi-stage manner from the maintenance voltage to the first brake release output voltage, or it can be With different voltage adjustment frequencies, the output voltage of the brake power supply is controlled in a multi-stage manner from the first brake release output voltage to the second brake release output voltage.

Wherein, the brake control method also includes:

Step C10, when the brake shoe is in the released state, slowly increase the output voltage of the brake power supply until the brake is closed. When the brake is closed, the output voltage of the brake power supply is the brake closing reference voltage;

Step C20, determine the first brake pull-in output voltage according to the brake pull-in reference voltage and the first preset voltage ratio;

Step C30, when the brake shoe is in the pull-in state, slowly reduce the output voltage of the brake power supply until the brake is released, and the output voltage of the brake power supply when the brake is released is the brake release reference voltage;

Step C40: Determine the first brake release output voltage according to the brake release reference voltage and the second preset voltage ratio.

In this embodiment, it should be noted that the specific magnitudes of the first brake pull-in output voltage and the first brake release output voltage can be set through self-learning.

As an example, steps C10 to C40 include: when the brake shoe is in a released state, slowly increasing the output voltage of the brake power supply until the brake is closed, and reducing the output voltage of the brake power supply just when the brake is closed. Recorded as the brake pull-in reference voltage, calculate the product of the brake pull-in reference voltage and the first preset voltage ratio to obtain the first brake pull-in output voltage. As an example, the first preset voltage If the ratio is less than 100%, the first preset voltage ratio can be set to 80% or 90%, etc.; when the brake shoe is in the pull-in state, slowly reduce the output voltage of the brake power supply until the brake is released, and the brake will be exactly The output voltage of the brake power supply during release is recorded as the brake release reference voltage; the product between the brake release reference voltage and the second preset voltage ratio is calculated to obtain the first brake release output voltage, as a For example, the second preset voltage ratio is greater than 100%, and the second preset voltage ratio can be set to 110% or 120%, etc.

Wherein, the brake control method also includes:

Step D10, after receiving the brake pull-in command, control the output voltage of the brake power supply to increase to the first brake pull-in output voltage through the first brake pull-in control strategy;

Step D20, when it is detected that the brake shoe starts to move, the output voltage of the brake power supply is controlled to be adjusted from the first brake pull-in output voltage to the second brake pull-in output through the second brake pull-in control strategy. Voltage;

Step D30, when it is detected that the brake shoe is in place or the brake shoe speed is zero, control the output voltage of the brake power supply to adjust from the second brake pull-in output voltage to the strong excitation voltage and maintain it;

Wherein, the strong excitation voltage is used to ensure reliable pull-in of the brake, and the first brake pull-in control time is shorter than the second brake pull-in control time. As shown in Figures 2 and 3, the strong excitation voltage and the sustaining voltage are two voltages with inconsistent voltages. However, in actual applications, the voltages of the two can also be set to be consistent without any restrictions here.

In this embodiment, it should be noted that the specific implementation process of step D10 to step D30 may refer to the specific implementation content of the following steps E10 to E30 and its detailed steps, which will not be described again here.

The embodiment of the present application provides a brake control method. Compared with the technical means in the prior art of directly controlling the disconnection of the brake contactor to perform elevator braking, the embodiment of the present application provides a brake release command after receiving the brake release command. , firstly, the output voltage of the brake power supply is controlled from the maintenance voltage to the first brake release output voltage through the first brake release control strategy. At this time, due to the decrease in the output voltage of the brake power supply, the electromagnetic force decreases. At this time The brake shoe starts to release under the joint action of electromagnetic force and spring tension, that is, it starts to move. The maintenance voltage is used to maintain the brake shoe of the brake in the closed state, and the first brake is closed. The control time is less than the second brake pull-in control time; when it is detected that the brake shoe starts to move, the output voltage of the brake power supply is controlled by the second brake release control strategy to be adjusted from the first brake release output voltage to The second brake releases the output voltage to control the electromagnetic force not to be too large during the movement of the brake shoe, so that the movement speed of the brake shoe when holding the brake wheel will not be too large. When the brake shoe is detected to be in place or When the brake shoe speed is zero, the output voltage of the brake power supply is adjusted from the second brake release output voltage to zero to complete the brake release, thus overcoming the problem that the brake shoe is holding the brake wheel during elevator braking. The technical defect is that when the speed is larger, which will produce larger noise, the noise during elevator braking is reduced.

Embodiment 2

Further, referring to FIG. 4 , in another embodiment of the present application, content that is the same or similar to the above embodiment can be referred to the above introduction, and will not be described again. The brake control method includes:

Step E10, after receiving the brake pull-in command, control the output voltage of the brake power supply to increase to the first brake pull-in output voltage through the first brake pull-in control strategy;

Step E20, when it is detected that the brake shoe begins to move, the output voltage of the brake power supply is controlled to be adjusted from the first brake pull-in output voltage to the second brake pull-in output through the second brake pull-in control strategy. Voltage;

Step E30, when it is detected that the brake shoe is in place or the brake shoe speed is zero, control the output voltage of the brake power supply to adjust from the second brake pull-in output voltage to the strong excitation voltage and maintain it;

Wherein, the strong excitation voltage is used to ensure reliable pull-in of the brake, and the first brake pull-in control time is shorter than the second brake pull-in control time. As shown in Figures 2 and 3, the strong excitation voltage and the sustaining voltage are two voltages with inconsistent voltages. However, in actual applications, the voltages of the two can also be set to be consistent, without any restrictions here.

In this embodiment, it should be noted that when starting the elevator, the brake power supply is currently directly controlled to output a strong excitation voltage, thereby generating a corresponding electromagnetic force. Under the combined action of the electromagnetic force and the spring force, the brake shoe The brake shoe continues to accelerate from the brake wheel to the static iron core with a large acceleration. Therefore, the movement speed of the brake shoe when contacting the static iron core is also large, which will also produce a large noise when the elevator starts.

As an example, steps C10 to C20 include: after receiving the brake pull-in command, controlling the output voltage of the brake power supply to increase to the first brake pull-in output voltage through the first brake pull-in control strategy, Wherein, when the output voltage of the brake power supply is the first brake closing output voltage, the electromagnetic force generated by the output voltage is greater than the spring force, so the brake wheel will be moved by the brake wheel under the joint action of the electromagnetic force and the spring force. begins to move toward the static iron core; when it is detected that the brake shoe begins to move, the output voltage of the brake power supply is controlled by the second brake pull-in control strategy to be adjusted from the first brake pull-in output voltage to The second brake pulls in the output voltage to control the movement speed of the brake shoe when it contacts the static iron core by controlling the acceleration of the brake shoe during movement. After detecting that the brake shoe is in place Or when the brake shoe speed is zero, the output voltage of the brake power supply is adjusted from the second brake suction output voltage to the strong excitation voltage and maintained; wherein, the strong excitation voltage is used to ensure reliable suction of the brake. close, and the first brake closing control time is less than the second brake closing control time. Since the movement speed of the brake shoe will not be too high when it contacts the static iron core, excessive noise can be avoided when the elevator is started.

Wherein, the second brake pull-in control strategy controls the output voltage of the brake power supply to be adjusted from the first brake pull-in output voltage to the second brake pull-in output voltage, including:

Step F10, according to the output voltage drop curve when the brake is engaged, control the output voltage of the brake power supply to decrease from the first brake engage output voltage to the second brake engage output voltage;

Step F20, in the process of adjusting the output voltage of the brake power supply from zero to a strong excitation voltage, the brake shoe first performs an acceleration movement and then deceleration movement to the static iron core.

As an example, steps F10 to F20 include: controlling the output voltage of the brake power supply to decrease from the first brake pull-in output voltage to the second brake pull-in output voltage according to the output voltage drop curve when the brake pull-in. The brake pulls in the output voltage. At this time, the electromagnetic force generated by the output voltage gradually decreases. The electromagnetic force is first greater than the spring force, then equal to the spring force, and finally less than the spring force. Therefore, the output voltage of the brake power supply is adjusted from zero to During the process of strong voltage excitation, the brake shoe first accelerates and then decelerates to the static iron core. As an example, referring to Figure 2 again, point d is the strong excitation voltage, point b is the first brake pull-in output voltage, point c is the second brake pull-in output voltage, and section bc curve is the output voltage drop curve. As the output voltage decreases, the electromagnetic force also gradually decreases. The electromagnetic force is first greater than the spring force, then equal to the spring force, and finally less than the spring force. The brake shoe first accelerates and then decelerates. , at this time, the speed of the brake shoe increases first and then decreases. The movement speed of the brake shoe when contacting the static iron core is small, and can even approach zero, thus reducing the noise generated when the elevator starts to the greatest extent.

Step G10, according to the output voltage rising curve when the brake is engaged, control the output voltage of the brake power supply to increase from the first brake engage output voltage to the second brake engage output voltage;

Step G20: During the process of adjusting the output voltage of the brake power supply from zero to a strong excitation voltage, the brake shoe slowly accelerates to move to the static iron core.

As an example, steps G10 to G20 include: controlling the output voltage of the brake power supply to increase from the first brake pull-in output voltage to the second brake pull-in output voltage according to the output voltage rise curve when the brake pull-in. The brake pulls in the output voltage. At this time, by controlling the slope of the output voltage rising curve, the electromagnetic force generated by the output voltage can be controlled to slowly increase. The electromagnetic force is greater than the spring force, and the resultant force generated by the electromagnetic force and the spring force will slowly increase. , the motion acceleration of the brake shoe will slowly increase, so in the process of adjusting the output voltage of the brake power supply from zero to a strong excitation voltage, the brake shoe will slowly accelerate to the static iron core, which can ensure that the brake shoe contact The movement speed of the static iron core will not be too large. As an example, refer to Figure 3 again, where point d is the strong excitation voltage, point b is the first brake pull-in output voltage, point c is the second brake pull-in output voltage, bc The segmented curve is the output voltage rising curve. It can be seen that the slope of the output voltage rising curve is small, so the movement acceleration of the brake wheel will only increase slowly, and the brake shoe will accelerate slowly. Although the brake shoe is accelerating, However, due to the small acceleration, although the movement speed of the brake shoe will not approach 0 when it finally contacts the static iron core, the movement speed of the brake shoe will not be too large. Compared with the direct output of strong exciting voltage from the brake power supply, The way the elevator starts, the movement speed of the brake shoe is smaller, thus reducing the noise generated when the elevator starts.

Further referring to Figure 3, as an example, the electromagnetic force generated by the first brake closing output voltage can be equal to the spring force. At this time, the acceleration corresponding to point b is exactly 0, and the brake shoe of section bc is undergoing slow acceleration motion throughout the process. ; The electromagnetic force generated by the first brake pull-in output voltage can also be greater than the spring force. At this time, the acceleration corresponding to point b is greater than 0, and the brake shoe in section bc is undergoing slow acceleration movement throughout the whole process; the first brake pull-in output The electromagnetic force generated by the voltage can also be smaller than the spring force. At this time, the brake shoe at point b has no acceleration. The brake shoe at section bc is stationary for a period of time, and then the output voltage gradually increases. When the increased output voltage generates the electromagnetic force equal to the spring force , the brake shoe begins to move at a slow acceleration.

In another embodiment, during the brake pull-in phase, the output voltage of the brake power supply can be controlled in a multi-stage manner to rise from zero to the first brake pull-in output voltage at different voltage rise frequencies, or Different voltage adjustment frequencies can be used to control the output voltage of the brake power supply in a multi-stage manner from the first brake pull-in output voltage to the second brake pull-in output voltage.

Wherein, the brake control method also includes:

Step H10, when the brake shoe is in the released state, slowly increase the output voltage of the brake power supply until the brake is closed. When the brake is closed, the output voltage of the brake power supply is the brake closing reference voltage;

Step H20, determine the first brake pull-in output voltage according to the brake pull-in reference voltage and the first preset voltage ratio;

Step H30, when the brake shoe is in the pull-in state, slowly reduce the output voltage of the brake power supply until the brake is released, and the output voltage of the brake power supply when the brake is released is the brake release reference voltage;

Step H40: Determine the first brake release output voltage according to the brake release reference voltage and the second preset voltage ratio.

In this embodiment, it should be noted that for the specific implementation process of steps H10 to H40, reference can be made to the specific implementation contents of steps C10 to C40 and their detailed steps below, which will not be described again here.

Wherein, the brake control method also includes:

Step Q10, after receiving the brake release command, control the output voltage of the brake power supply from the maintenance voltage to the first brake release output voltage through the first brake release control strategy;

Step Q20, when it is detected that the brake shoe begins to move, the output voltage of the brake power supply is controlled to be adjusted from the first brake release output voltage to the second brake release output voltage through the second brake release control strategy;

Step Q30, when it is detected that the brake shoe is in place or the brake shoe speed is zero, control the output voltage of the brake power supply to adjust to zero from the second brake release output voltage;

In this embodiment, it should be noted that the specific implementation process of step Q10 to step Q30 can refer to the specific implementation content of the following steps S10 to S30 and its detailed steps, which will not be described again here.

The embodiment of the present application provides a brake control method. Compared with the technical means in the prior art of directly controlling the brake contactor to directly output a strong exciting voltage to start the elevator, the embodiment of the present application receives the brake suction. After the closing command, the output voltage of the brake power supply is controlled to increase to the first brake closing output voltage through the first brake closing control strategy. At this time, due to the increase in the output voltage of the brake power supply, the electromagnetic force increases. At this time, the brake shoe starts to pull in under the joint action of electromagnetic force and spring tension, that is, it starts to move; when it is detected that the brake shoe starts to move, the output voltage of the brake power supply is controlled by the second brake pull-in control strategy. The first brake pull-in output voltage is adjusted to the second brake pull-in output voltage to control the electromagnetic force not to be too large during the movement of the brake shoe, so that the movement speed of the brake shoe when contacting the static iron core is not will be too large. When it is detected that the brake shoe is in place or the brake shoe speed is zero, the output voltage of the brake power supply is controlled to be adjusted from the second brake pull-in output voltage to the strong excitation voltage and maintained to complete the holding. The brake is closed, so it overcomes the technical defect of producing loud noise due to the high speed of the brake shoe when contacting the static iron core when the elevator starts, and reduces the noise when the elevator starts.

Embodiment 3

This application also provides a brake control device. The brake control device includes:

In one embodiment, the holding brake control device is also used for:

In one embodiment, the second voltage control module is also used for:

According to the output voltage rising curve when the brake is released, the output voltage of the brake power supply is controlled to increase from the first brake release output voltage to the second brake release output voltage;

In the process of adjusting the output voltage of the brake power supply to zero from the first brake release output voltage, the brake shoe first accelerates and then decelerates to the brake wheel.

In one embodiment, the second voltage control module is also used for:

According to the output voltage drop curve when the brake is released, the output voltage of the brake power supply is controlled to decrease from the first brake release output voltage to the second brake release output voltage;

In the process of adjusting the output voltage of the brake power supply to zero from the first brake release output voltage, the brake shoe slowly accelerates to move to the brake wheel.

In one embodiment, the holding brake control device is also used for:

When the brake shoe is in the released state, slowly increase the output voltage of the brake power supply until the brake is closed. When the brake is closed, the output voltage of the brake power supply is the brake closing reference voltage;

Determine the first brake pull-in output voltage according to the brake pull-in reference voltage and the first preset voltage ratio;

When the brake shoe is in the pull-in state, slowly reduce the output voltage of the brake power supply until the brake is released. When the brake is released, the output voltage of the brake power supply is the brake release reference voltage;

The first brake release output voltage is determined according to the brake release reference voltage and the second preset voltage ratio.

The brake control device provided by this application adopts the brake control method in the above embodiment to solve the technical problem of high elevator operation noise. Compared with the prior art, the beneficial effects of the brake control device provided by the embodiments of the present application are the same as those of the brake control method provided by the above embodiments, and other technical features of the brake control device are the same as those of the brake control method provided by the above embodiments. The features disclosed in the methods of the above embodiments are the same and will not be described again here.

Embodiment 4

The second voltage control module is used to control the output voltage of the brake power supply from the first brake pull-in output voltage to the second brake pull-in output voltage through the second brake pull-in control strategy when detecting that the brake shoe begins to move. Brake pull-in output voltage;

In one embodiment, the holding brake control device is also used for:

In one embodiment, the second voltage control module is also used for:

According to the output voltage drop curve when the brake is engaged, the output voltage of the brake power supply is controlled to decrease from the first brake engage output voltage to the second brake engage output voltage;

In the process of adjusting the output voltage of the brake power supply from zero to a strong excitation voltage, the brake shoe first accelerates and then decelerates to the static iron core.

In one embodiment, the second voltage control module is also used for:

According to the output voltage rising curve when the brake is engaged, the output voltage of the brake power supply is controlled to increase from the first brake engage output voltage to the second brake engage output voltage;

In the process of adjusting the output voltage of the brake power supply from zero to a strong excitation voltage, the brake shoe slowly accelerates to move to the static iron core.

In one embodiment, the holding brake control device is also used for:

Embodiment 5

Embodiments of the present application provide an electronic device. The electronic device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by at least one processor, and the instructions are executed by at least one processor. The processor executes, so that at least one processor can execute the brake control method in the above-mentioned Embodiment 1.

Referring now to FIG. 5 , a schematic structural diagram of an electronic device suitable for implementing embodiments of the present disclosure is shown. Electronic devices in embodiments of the present disclosure may include, but are not limited to, mobile phones, laptops, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Tablets), PMPs (Portable Multimedia Players), vehicle-mounted terminals (e.g. Mobile terminals such as vehicle navigation terminals) and fixed terminals such as digital TVs, desktop computers, etc. The electronic device shown in FIG. 5 is only an example and should not impose any limitations on the functions and scope of use of the embodiments of the present disclosure.

As shown in FIG. 5 , the electronic device may include a processing device (such as a central processing unit, a graphics processor, etc.) that may be loaded into a random access memory (RAM) according to a program stored in a read-only memory (ROM) or from a storage device. perform various appropriate actions and processing according to the program in it. In the RAM, various programs and data required for the operation of the electronic device are also stored. The processing device, ROM and RAM are connected to each other via a bus. Input/output (I/O) interfaces are also connected to the bus.

Typically, the following systems can be connected to the I/O interface: input devices including, for example, touch screens, touch pads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; including, for example, liquid crystal displays (LCDs), speakers, vibrators Output devices, etc.; storage devices including tapes, hard disks, etc.; and communication devices. The communication device may allow the electronic device to communicate wirelessly or wiredly with other devices to exchange data. Although the figures illustrate electronic devices having various systems, it is to be understood that implementation or availability of all illustrated systems is not required. More or fewer systems may alternatively be implemented or provided.

In particular, according to embodiments of the present disclosure, the processes described above with reference to the flowcharts may be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product including a computer program carried on a computer-readable medium, the computer program containing program code for performing the method illustrated in the flowchart. In such embodiments, the computer program may be downloaded and installed from the network through the communication device, or from a storage device, or from a ROM. When the computer program is executed by the processing device, the above-mentioned functions defined in the method of the embodiment of the present disclosure are performed.

The electronic device provided by this application adopts the brake control method in the above embodiment to solve the technical problem of high noise in elevator operation. Compared with the existing technology, the beneficial effects of the electronic device provided by the embodiment of the present application are the same as those of the brake control method provided by the above-mentioned Embodiment 1, and other technical features in the electronic device are disclosed in the method of the above-mentioned embodiment. The characteristics are the same and will not be described again here.

It should be understood that various parts of the present disclosure may be implemented in hardware, software, firmware, or combinations thereof. In the above description of the embodiments, specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Embodiment 6

This embodiment provides a computer-readable storage medium having computer-readable program instructions stored thereon. The computer-readable program instructions are used to execute the brake control method in the first embodiment.

The computer-readable storage medium provided by the embodiment of the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination thereof. More specific examples of computer readable storage media may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard drive, random access memory (RAM), read only memory (ROM), removable Programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above. In this embodiment, a computer-readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, system, or device. Program code embodied on a computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wire, optical cable, RF (radio frequency), etc., or any suitable combination of the foregoing.

The above-mentioned computer-readable storage medium may be included in the electronic device; it may also exist independently without being assembled into the electronic device.

The above computer-readable storage medium carries one or more programs. When the above one or more programs are executed by the electronic device, the electronic device: after receiving the brake release command, controls the brake through the first brake release control strategy. The output voltage of the brake power supply is reduced from the maintenance voltage to the first brake release output voltage; when it is detected that the brake shoe begins to move, the output voltage of the brake power supply is controlled from the first brake release control strategy through the second brake release control strategy. The brake release output voltage is adjusted to the second brake release output voltage; when it is detected that the brake shoe is in place or the brake shoe speed is zero, the output voltage of the brake power supply is controlled to be the second brake release output voltage. Adjusted to zero; wherein the maintenance voltage is used to maintain the brake shoe of the brake in the pull-in state, and the first brake release control time is shorter than the second brake release control time.

And/or after receiving the brake pull-in command, control the output voltage of the brake power supply to increase to the first brake pull-in output voltage through the first brake pull-in control strategy; when it is detected that the brake shoe begins to move, The output voltage of the brake power supply is controlled by the second brake pull-in control strategy to be adjusted from the first brake pull-in output voltage to the second brake pull-in output voltage; when the brake shoe is detected to be in place or the brake When the watt speed is zero, the output voltage of the brake power supply is controlled to be adjusted from the second brake pull-in output voltage to the strong exciting voltage and maintained; wherein, the strong exciting voltage is used to ensure that the brake is reliably closed, And the first brake pull-in control time is shorter than the second brake pull-in control time.

Computer program code for performing the operations of the present disclosure may be written in one or more programming languages, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional Procedural programming language—such as "C" or a similar programming language. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In situations involving remote computers, the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (such as an Internet service provider through Internet connection).

The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operations of possible implementations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, segment, or portion of code that contains one or more logic functions that implement the specified executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown one after another may actually execute substantially in parallel, or they may sometimes execute in the reverse order, depending on the functionality involved. It will also be noted that each block of the block diagram and/or flowchart illustration, and combinations of blocks in the block diagram and/or flowchart illustration, can be implemented by special purpose hardware-based systems that perform the specified functions or operations. , or can be implemented using a combination of specialized hardware and computer instructions.

The modules involved in the embodiments of the present disclosure can be implemented in software or hardware. Among them, the name of the module does not constitute a limitation on the unit itself under certain circumstances.

The computer-readable storage medium provided by this application stores computer-readable program instructions for executing the above-mentioned brake control method, and solves the technical problem of high elevator operation noise. Compared with the existing technology, the beneficial effects of the computer-readable storage medium provided by the embodiments of the present application are the same as the beneficial effects of the brake control method provided by the above-mentioned embodiments, and will not be described again here.

The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of the present application may be directly or indirectly used in other related technical fields. , are all similarly included in the patent processing scope of this application.

Claims

A brake control method, wherein the brake control method includes:

After receiving the brake release command, the output voltage of the brake power supply is controlled from the maintenance voltage to the first brake release output voltage through the first brake release control strategy;

When it is detected that the brake shoe begins to move, the output voltage of the brake power supply is controlled to be adjusted from the first brake release output voltage to the second brake release output voltage through the second brake release control strategy;

When it is detected that the brake shoe is in place or the brake shoe speed is zero, the output voltage of the brake power supply is controlled to be adjusted to zero by the second brake release output voltage;

Wherein, the maintenance voltage is used to maintain the brake shoe of the brake in a pull-in state, and the first brake release control time is shorter than the second brake release control time.
The brake control method according to claim 1, wherein the brake control method further includes:

After receiving the brake pull-in command, control the output voltage of the brake power supply to increase to the first brake pull-in output voltage through the first brake pull-in control strategy;

When it is detected that the brake shoe begins to move, the output voltage of the brake power supply is controlled by the second brake pull-in control strategy to be adjusted from the first brake pull-in output voltage to the second brake pull-in output voltage. ;

When it is detected that the brake shoe is in place or the brake shoe speed is zero, the output voltage of the brake power supply is controlled to be adjusted from the second brake pull-in output voltage to the strong excitation voltage and maintained;

Wherein, the strong excitation voltage is used to ensure reliable pull-in of the brake, and the first brake pull-in control time is shorter than the second brake pull-in control time.
The brake control method according to claim 1, wherein the output voltage of the brake power supply controlled by the second brake release control strategy is adjusted from the first brake release output voltage to the second brake release Output voltage, including:

According to the output voltage rising curve when the brake is released, the output voltage of the brake power supply is controlled to increase from the first brake release output voltage to the second brake release output voltage;

In the process of adjusting the output voltage of the brake power supply to zero from the first brake release output voltage, the brake shoe first accelerates and then decelerates to the brake wheel.
The brake control method according to claim 1, wherein the output voltage of the brake power supply controlled by the second brake release control strategy is adjusted from the first brake release output voltage to the second brake release Output voltage, including:

According to the output voltage drop curve when the brake is released, the output voltage of the brake power supply is controlled to decrease from the first brake release output voltage to the second brake release output voltage;

In the process of adjusting the output voltage of the brake power supply to zero from the first brake release output voltage, the brake shoe slowly accelerates to move to the brake wheel.
The brake control method according to claim 2, wherein the brake control method further includes:

When the brake shoe is in the released state, slowly increase the output voltage of the brake power supply until the brake is closed. When the brake is closed, the output voltage of the brake power supply is the brake closing reference voltage;

Determine the first brake pull-in output voltage according to the brake pull-in reference voltage and the first preset voltage ratio;

When the brake shoe is in the pull-in state, slowly reduce the output voltage of the brake power supply until the brake is released. When the brake is released, the output voltage of the brake power supply is the brake release reference voltage;

The first brake release output voltage is determined according to the brake release reference voltage and the second preset voltage ratio.
A brake control method, wherein the brake control method includes:

After receiving the brake pull-in command, the output voltage of the brake power supply is controlled to increase to the first brake pull-in output voltage through the first brake pull-in control strategy;

When it is detected that the brake shoe begins to move, the second brake pull-in control strategy is used to control the output voltage of the brake power supply to be adjusted from the first brake pull-in output voltage to the second brake pull-in output voltage;

When it is detected that the brake shoe is in place or the brake shoe speed is zero, the output voltage of the brake power supply is controlled to be adjusted from the second brake pull-in output voltage to the strong excitation voltage and maintained;

Wherein, the strong excitation voltage is used to ensure reliable pull-in of the brake, and the first brake pull-in control time is shorter than the second brake pull-in control time.
The brake control method according to claim 6, wherein the brake control method further includes:

After receiving the brake release command, control the output voltage of the brake power supply from the maintenance voltage to the first brake release output voltage through the first brake release control strategy;

When it is detected that the brake shoe begins to move, the output voltage of the brake power supply is controlled to be adjusted from the first brake release output voltage to the second brake release output voltage through the second brake release control strategy;

When it is detected that the brake shoe is in place or the brake shoe speed is zero, the output voltage of the brake power supply is controlled to be adjusted to zero by the second brake release output voltage;

Wherein, the maintenance voltage is used to maintain the brake shoe of the brake in a pull-in state, and the first brake release control time is shorter than the second brake release control time.
The brake control method according to claim 6, wherein the output voltage of the brake power supply controlled by the second brake pull-in control strategy is adjusted from the first brake pull-in output voltage to the second brake pull-in output voltage. Gate pickup output voltage, including:

According to the output voltage drop curve when the brake is engaged, the output voltage of the brake power supply is controlled to decrease from the first brake engage output voltage to the second brake engage output voltage;

In the process of adjusting the output voltage of the brake power supply from zero to a strong excitation voltage, the brake shoe first accelerates and then decelerates to the static iron core.
The brake control method according to claim 6, wherein the output voltage of the brake power supply controlled by the second brake pull-in control strategy is adjusted from the first brake pull-in output voltage to the second brake pull-in output voltage. Gate pickup output voltage, including:

According to the output voltage rising curve when the brake is engaged, the output voltage of the brake power supply is controlled to increase from the first brake engage output voltage to the second brake engage output voltage;

In the process of adjusting the output voltage of the brake power supply from zero to a strong excitation voltage, the brake shoe slowly accelerates to move to the static iron core.
The brake control method according to claim 7, wherein the brake control method further includes:

When the brake shoe is in the released state, slowly increase the output voltage of the brake power supply until the brake is closed. When the brake is closed, the output voltage of the brake power supply is the brake closing reference voltage;

Determine the first brake pull-in output voltage according to the brake pull-in reference voltage and the first preset voltage ratio;

When the brake shoe is in the pull-in state, slowly reduce the output voltage of the brake power supply until the brake is released. When the brake is released, the output voltage of the brake power supply is the brake release reference voltage;

The first brake release output voltage is determined according to the brake release reference voltage and the second preset voltage ratio.
An electronic device, wherein the electronic device includes:

at least one processor; and,

a memory communicatively connected to the at least one processor; wherein,

The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can perform any one of claims 1 to 10 The steps of the holding brake control method.
A computer-readable storage medium, wherein a program for implementing a brake control method is stored on the computer-readable storage medium, and the program for implementing the brake control method is executed by a processor to implement the steps of claims 1 to 1 The steps of the brake control method described in any one of 10.