Caliper clamping force determination method and device, electronic equipment and storage medium

Abstract

The invention provides a caliper clamping force determination method and device, electronic equipment and a storage medium, and the method comprises the steps: determining a target ramp caliper clamping force which needs to be implemented when a current vehicle is parked on a ramp; determining a target flat road caliper clamping force required to be implemented when the current vehicle is parked on the flat road; and on the basis of the target ramp caliper clamping force and the target flat road caliper clamping force, the full-working-condition parking caliper clamping force of the current vehicle is determined. By means of the device, the technical problems that due to the fact that different clamping forces are applied to a flat road and a ramp, clamping force redundancy is serious, and the service life of parts such as a parking motor is shortened can be solved, the probability of clamping force redundancy can be reduced while safe clamping is guaranteed, the service life of the parts such as the parking motor is prolonged, and the safety of the parking motor is improved. Therefore, the technical effects that safe clamping is guaranteed, and the service life of parts such as the parking motor is prolonged are achieved at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile electronic parking control, and in particular to a method and device for determining a caliper clamping force, an electronic device and a storage medium. Background Art

[0002] As we all know, the Electronic Park Brake (EPB) technology refers to the technology that integrates the temporary braking function during driving and the long-term braking function after parking, and realizes parking braking by electronic control. Therefore, more and more vehicles are equipped with EPB systems based on EPB technology. When the vehicle is parked for a long time, the EPB system can achieve stable parking without the driver's participation. In addition, the EPB system can automatically adjust the clamping force according to the state of the vehicle to ensure that the vehicle is stable and does not move in the parking position. Therefore, it is particularly important for the EPB system to control the clamping force when parking in the car.

[0003] In the related art, the EPB system usually uses a clamping force segmented control method to control the clamping force, that is, it determines whether the vehicle's current road condition is a flat road or a slope based on the acceleration sensor, and then controls the flat road to implement the flat road clamping force, and the slope to implement the slope clamping force; thereby achieving the purpose of segmented control of the clamping force.

[0004] However, the above-mentioned clamping force segmented control method has serious clamping force redundancy under non-maximum slope conditions, which will lead to a reduction in the service life of components such as the parking motor over a long period of time, resulting in a technical problem of not being able to simultaneously ensure safe clamping and extend the service life of components such as the parking motor. Summary of the invention

[0005] The purpose of the present invention is to provide a method, device, electronic device and storage medium for determining the clamping force of a caliper, so as to solve the technical problem that the prior art cannot solve at the same time to ensure safe clamping and extend the service life of the parking motor and other parts, and to achieve stable parking by using the continuous clamping force of the full-operating condition parking caliper clamping force determined by the ramp, thereby solving the technical problem that the clamping force redundancy is serious and the service life of the parking motor and other parts is reduced due to the different clamping forces respectively implemented on the flat road and the ramp, and the probability of clamping force redundancy can be reduced while ensuring safe clamping, and the service life of the parking motor and other parts can be extended, thereby achieving the technical effect of ensuring safe clamping and extending the service life of the parking motor and other parts at the same time. The many technical effects that can be produced by the preferred technical scheme among the many technical schemes provided by the present invention are described in detail below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a method for determining a clamping force of a caliper, comprising:

[0008] Determine a target ramp caliper clamping force that is required to be implemented when the vehicle is currently parked on a ramp;

[0009] Determining a target flat-road caliper clamping force required to be implemented when the current vehicle is parked on a flat road;

[0010] Based on the target ramp caliper clamping force and the target flat road caliper clamping force, the full-operating-condition parking caliper clamping force of the current vehicle is determined.

[0011] According to a method for determining a caliper clamping force provided by the present invention, determining a target ramp caliper clamping force required to be implemented when the current vehicle is parked on a ramp includes:

[0012] determining a target ramp gravity of the current vehicle during ramp parking;

[0013] The target ramp caliper clamping force is determined based on the target ramp weight force.

[0014] According to a method for determining a caliper clamping force provided by the present invention, determining the target ramp caliper clamping force based on the target ramp gravity comprises:

[0015] Determining a friction coefficient of a friction plate and a caliper size coefficient of the current vehicle;

[0016] The target ramp caliper clamping force is calculated based on the friction coefficient of the friction plate, the caliper size factor and the target ramp weight.

[0017] According to a method for determining a caliper clamping force provided by the present invention, determining a target ramp gravity of the current vehicle during ramp parking includes:

[0018] Determining a target gravity of the current vehicle on the ramp and a target inclination angle of the current vehicle on the ramp;

[0019] The target ramp gravity is calculated based on the target gravity and the target inclination angle.

[0020] According to a method for determining a caliper clamping force provided by the present invention, determining a target flat-road caliper clamping force required to be implemented when the current vehicle is parked on a flat road comprises:

[0021] The target flat road caliper clamping force is determined based on the target gravity of the current vehicle and a preset mapping relationship between vehicle gravity and flat road caliper clamping force.

[0022] According to a caliper clamping force determination method provided by the present invention, the full-condition parking caliper clamping force of the current vehicle is determined based on the target ramp caliper clamping force and the target flat road caliper clamping force, comprising:

[0023] The maximum value of the target ramp caliper clamping force and the target flat road caliper clamping force is determined as the full-operating-condition parking caliper clamping force.

[0024] The present invention also provides a device for determining the clamping force of a caliper, comprising the following modules.

[0025] A ramp clamping force determination module, used to determine a target ramp caliper clamping force that is required to be implemented when the vehicle is currently parked on a ramp;

[0026] A flat-road clamping force determination module, used to determine a target flat-road caliper clamping force required to be implemented when the current vehicle is parked on a flat road;

[0027] The continuous clamping force determination module is used to determine the full-operating-condition parking caliper clamping force of the current vehicle based on the target ramp caliper clamping force and the target flat road caliper clamping force.

[0028] 8. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the caliper clamping force determination method according to any one of claims 1 to 6 when executing the computer program.

[0029] 9. A non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the method for determining the clamping force of a caliper according to any one of claims 1 to 6 is implemented.

[0030] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, a method for determining the clamping force of a caliper as described above is implemented.

[0031] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the method for determining the clamping force of a caliper as described in any one of the above is implemented.

[0032] The present invention also provides a vehicle, comprising the caliper clamping force determination device as described above or the electronic device as described above.

[0033] The present invention provides a method, device, electronic device and storage medium for determining the clamping force of a caliper, wherein the method for determining the clamping force of a caliper is that the EPB system first determines the target ramp caliper clamping force that the current vehicle needs to implement when parking on a ramp and the target flat road caliper clamping force that the current vehicle needs to implement when parking on a flat road, and then further determines the full-operating-condition parking caliper clamping force of the current vehicle based on the target ramp caliper clamping force and the target flat road caliper clamping force. In this way, the full-operating-condition parking caliper clamping force determined on the ramp can be used as a continuous clamping force to achieve stable parking, solving the technical problems of serious clamping force redundancy and reduced service life of components such as parking motors caused by implementing different clamping forces on flat roads and ramps, and reducing the probability of clamping force redundancy while ensuring safe clamping, thereby extending the service life of components such as parking motors, thereby achieving the technical effect of simultaneously ensuring safe clamping and extending the service life of components such as parking motors. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic flow chart of a method for determining a caliper clamping force according to an embodiment of the present invention;

[0036] Figure 2 A force analysis diagram of a vehicle on a hill provided by an embodiment of the present invention;

[0037] Figure 3 A schematic diagram of the structure of a caliper clamping force determination device provided by an embodiment of the present invention;

[0038] Figure 4 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the embodiments of the present invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B may be singular or plural. In the textual description of the present invention, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship. In addition, it should be noted that the serial numbers themselves, such as "first", "second", etc., used to distinguish the objects described in the present invention are only used to distinguish the objects described, and do not have any order or technical meaning.

[0041] As we all know, EPB technology refers to the technology that integrates temporary braking during driving and long-term braking after parking, and realizes parking braking by electronic control. Therefore, more and more vehicles are equipped with EPB systems based on EPB technology. When the vehicle is parked for a long time, the EPB system can achieve stable parking without the driver's participation. In addition, the EPB system can automatically adjust the clamping force according to the state of the vehicle to ensure that the vehicle is stable and does not move in the parking position. Therefore, it is particularly important for the EPB system to control the clamping force when parking in the car.

[0042] In the related art, the EPB system usually uses a clamping force segmented control method to control the clamping force, that is, it determines whether the vehicle's current road condition is a flat road or a slope based on the acceleration sensor, and then controls the flat road to implement the flat road clamping force, and the slope to implement the slope clamping force; thereby achieving the purpose of segmented control of the clamping force.

[0043] However, the above-mentioned clamping force segmented control method has serious clamping force redundancy under non-maximum slope conditions, which will lead to a reduction in the service life of components such as the parking motor over a long period of time, resulting in a technical problem of not being able to simultaneously ensure safe clamping and extend the service life of components such as the parking motor.

[0044] In order to solve the above technical problems, the present invention provides a method, device, electronic device and storage medium for determining the clamping force of a caliper. Stable parking is achieved by adopting the continuous clamping force of the full-working condition parking caliper clamping force determined by a ramp, which solves the technical problems of serious clamping force redundancy and reduced service life of components such as a parking motor caused by implementing different clamping forces on flat roads and ramps respectively. It can reduce the probability of clamping force redundancy while ensuring safe clamping and extend the service life of components such as a parking motor, thereby achieving the technical effect of simultaneously ensuring safe clamping and extending the service life of components such as a parking motor.

[0045] First, the professional terms involved in the present invention are explained:

[0046] EPB system: It consists of an electronic brake control module (EBCM), an EPB switch, a brake activation switch, an EPB brake motor, a servo mechanism, a clutch switch, a travel sensor, and an engine module. The EPB system can not only automatically activate the parking brake after the engine is turned off, but also realize the braking function through a button during driving. When the driver needs to make an emergency stop, the EPB switch can be used to brake even without stepping on the brake pedal. In addition, when the car is turned off by pulling out the key, the EPB system will automatically activate the parking brake to ensure that the vehicle cannot move at will after it stops, thus improving safety.

[0047] Combine the following Figure 1-Figure 4 A method, device, electronic device and storage medium for determining the clamping force of a caliper are described, wherein the execution subject of the method for determining the clamping force of a caliper may be an EPB system pre-configured in a vehicle, or may be an electronic device or server that is connected to the EPB system in communication; the electronic device may be a cloud server of other devices such as a personal computer (PC), a portable device, a laptop computer, a smart phone, a tablet computer and a portable wearable device, and the server may refer to a single server, or may be a server cluster, a cloud server and the like composed of multiple servers. The present invention does not specifically limit the specific form of the electronic device or the server. Furthermore, the method for determining the clamping force of a caliper may also be applied to a device for determining the clamping force of a caliper that is arranged in an EPB system, an electronic device or a server, and the device for determining the clamping force of a caliper may be implemented by software, hardware or a combination of the two. The following describes the method for determining the clamping force of a caliper by taking the EPB system as an example in which the execution subject of the method for determining the clamping force of a caliper is an example in which the EPB system is used as the execution subject.

[0048] In order to facilitate understanding of the caliper clamping force determination method provided by the embodiment of the present invention, the caliper clamping force determination method provided by the present invention will be described in detail below through the following exemplary embodiments. It can be understood that the following exemplary embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0049] Reference Figure 1 , is a flow chart of a method for determining the clamping force of a caliper provided in an embodiment of the present invention, such as Figure 1 As shown, the caliper clamping force determination method includes the following steps 110 to 130.

[0050] Step 110: Determine the target ramp caliper clamping force that is required to be implemented when the vehicle is currently parked on a ramp.

[0051] The target ramp caliper clamping force may be a caliper clamping force currently required for the vehicle on the ramp.

[0052] Specifically, when the EPB system receives the parking signal sent by the current vehicle, it can determine the target ramp caliper clamping force that matches both the vehicle design index of the current vehicle and the current ramp angle according to the pre-set mapping relationship between the vehicle design index-ramp angle-ramp caliper clamping force; or it can also calculate the target ramp caliper clamping force using a pre-designed ramp caliper clamping force calculation algorithm. No specific limitation is made here.

[0053] It should be noted that in the mapping relationship between vehicle design index-ramp angle-ramp caliper clamping force, the ramp angle can specifically be the inclination angle of the vehicle on the ramp; the vehicle design index can specifically be a mass parameter, such as at least one of the vehicle mass, maximum loading mass, maximum total mass and maximum axle load mass.

[0054] The vehicle quality can specifically be the vehicle's complete vehicle curb weight. The vehicle's complete vehicle curb weight refers to the quality of the vehicle when it is fully equipped according to factory technical conditions (such as spare tire, tools, various oils and fluids filled, and fuel volume of not less than 90%).

[0055] Maximum load mass refers to the maximum mass of cargo that the vehicle is designed to carry.

[0056] The maximum gross mass refers to the overall mass of the vehicle when fully loaded, which is calculated by the sum of the vehicle's equipment mass and the maximum load mass.

[0057] The maximum axle load refers to the mass borne by each axle when the vehicle is fully loaded.

[0058] Step 120: Determine the target flat-road caliper clamping force required to be implemented when the current vehicle is parked on a flat road.

[0059] The target flat-road caliper clamping force may be the caliper clamping force required for the current vehicle on a flat road; theoretically, the target caliper clamping force may be 0 or may not be 0; no specific limitation is made here.

[0060] Specifically, when the EPB system receives the parking signal sent by the current vehicle, it can determine the target ramp caliper clamping force and, based on the pre-set mapping relationship between vehicle design index and flat road caliper clamping force, determine the target flat road caliper clamping force that matches the vehicle design index of the current vehicle; or, it can calculate the target flat road caliper clamping force using a pre-designed flat road caliper clamping force calculation algorithm. This is not specifically limited here.

[0061] Step 130: Determine the full-condition parking caliper clamping force of the current vehicle based on the target ramp caliper clamping force and the target flat road caliper clamping force.

[0062] Among them, the full-condition parking caliper clamping force can be the maximum caliper clamping force that the EPB system of the current vehicle can provide under various driving and parking conditions; that is, the caliper clamping force required for parking on flat roads and slopes is the continuous clamping force of the full-condition parking caliper clamping force.

[0063] Specifically, when the target ramp caliper clamping force required to be implemented when the current vehicle is parked on a slope and the target flat road caliper clamping force required to be implemented when the current vehicle is parked on a flat road are determined, the full-condition parking caliper clamping force of the current vehicle can be calculated using a pre-designed full-condition parking clamping force calculation algorithm as well as the target ramp caliper clamping force and the target flat road caliper clamping force; so that the current vehicle can implement this full-condition parking caliper clamping force throughout the entire parking process to achieve stable parking.

[0064] In the method for determining the clamping force of calipers provided in the embodiment of the present invention, the EPB system first determines the target ramp caliper clamping force required to be implemented when the current vehicle is parked on a ramp and the target flat road caliper clamping force required to be implemented when the vehicle is parked on a flat road, and then further determines the full-operating-condition parking caliper clamping force of the current vehicle based on the target ramp caliper clamping force and the target flat road caliper clamping force. In this way, the full-operating-condition parking caliper clamping force determined on the ramp can be used as a continuous clamping force to achieve stable parking, which solves the technical problems of serious clamping force redundancy and reduced service life of components such as parking motors caused by implementing different clamping forces on flat roads and ramps respectively, and can reduce the probability of clamping force redundancy while ensuring safe clamping, and extend the service life of components such as parking motors, thereby achieving the technical effect of simultaneously ensuring safe clamping and extending the service life of components such as parking motors.

[0065] Based on the above Figure 1 In the caliper clamping force determination method shown in FIG. 1 , in an exemplary embodiment, in step 110 , the EPB system determines the target ramp caliper clamping force that is required to be implemented when the vehicle is currently parked on a ramp, and the specific determination process is implemented through the following steps.

[0066] First, a target ramp gravity of the current vehicle during ramp parking is determined; then, a target ramp caliper clamping force is determined based on the target ramp gravity.

[0067] Specifically, refer to Figure 2 , which is a force analysis diagram of a vehicle on a hill provided by an embodiment of the present invention, Figure 2 In it, G represents the target gravity of the current vehicle on the ramp, and θ represents the target inclination angle of the current vehicle on the ramp.

[0068] based on Figure 2 The vehicle parking force analysis diagram shown can first determine the target gravity G of the current vehicle on the slope, which can be specifically determined by the target vehicle mass and gravity acceleration of the current vehicle.

[0069] At this time, the pre-set mapping relationship between vehicle gravity-ramp angle-ramp gravity can be used to determine the target ramp gravity Fμ2 that matches both the target gravity G and the target inclination angle θ; the lane gravity here refers to the gravity of the vehicle during ramp parking, and the ramp angle here refers to the inclination angle of the vehicle on the ramp.

[0070] Furthermore, based on the preset mapping relationship between ramp gravity-friction coefficient-caliper size, a target ramp caliper clamping force matching the target ramp gravity Fμ2 and the friction coefficient of the friction plate and the caliper size coefficient of the current vehicle is determined.

[0071] Based on the above Figure 1 The caliper clamping force determination method shown in FIG. 1 , in an exemplary embodiment, the EPB system determines the target ramp caliper clamping force based on the target ramp gravity, and the specific determination process can be implemented through the following steps.

[0072] First, the friction coefficient of the friction plate and the caliper size factor of the current vehicle are determined; and then the target ramp caliper clamping force is calculated based on the friction coefficient of the friction plate, the caliper size factor and the target ramp gravity.

[0073] Specifically, the method for determining the friction coefficient of the friction plate of the current vehicle can be determined through experimental testing. Since the friction coefficient refers to the ratio between the friction force of the two surfaces of the friction plate and the vertical force acting on one surface, that is, friction coefficient = friction force / vertical force, the friction coefficient of the friction plate of the current vehicle can be calculated through this friction coefficient calculation formula; or, the friction coefficient of the friction plate of the current vehicle can also be determined based on the mapping relationship between the pre-set friction coefficient influencing factor and the friction coefficient; the friction coefficient influencing factor here can be at least one of other parameters such as temperature, humidity and surface roughness; or, it can also be determined by an electronic device or server and then fed back to the EPB system. The specific determination process of the friction coefficient of the friction plate is not specifically limited here.

[0074] Determining the caliper size factor of the current vehicle may include but is not limited to measuring or calculating one of the caliper diameter, the caliper width, and the caliper offset, and may specifically be measuring the caliper diameter, measuring the caliper width, or calculating the caliper offset.

[0075] The caliper diameter refers to the size of the circular part of the caliper, and the caliper width refers to the width of the caliper.

[0076] The caliper offset refers to the distance between the caliper and the wheel hub, which affects the vehicle's suspension and steering performance; the calculation of the caliper offset needs to take into account the vehicle's suspension and steering systems to ensure that the installation of the caliper will not have a negative impact on the vehicle's performance.

[0077] Therefore, the caliper size coefficient of the current vehicle can be measured manually or automatically and then input into the EPB system, or it can also be calculated by the EPB system using a preset offset calculation algorithm; the specific measurement process and the specific calculation process are not specifically limited here.

[0078] When the EPB system determines the friction coefficient of the friction plate of the current vehicle, the caliper size coefficient and the target ramp gravity, the target ramp caliper clamping force can be calculated using a pre-set ramp caliper clamping force calculation algorithm.

[0079] Exemplarily, the ramp caliper clamping force calculation algorithm may specifically be a ramp caliper clamping force calculation formula, such as F_slope=Fμ2 / (μ*r), where F_slope represents the target ramp caliper clamping force required to be implemented when the current vehicle is parked on a slope, Fμ2 represents the target ramp gravity of the current vehicle during the ramp parking process, μ represents the friction coefficient of the friction plate of the current vehicle, r represents the caliper size coefficient of the current vehicle, and * represents a multiplication sign.

[0080] Based on the above Figure 1 The caliper clamping force determination method shown in the figure, in an exemplary embodiment, the EPB system determines the target ramp gravity of the current vehicle during ramp parking, and the specific determination process can be implemented through the following steps.

[0081] First, the target gravity of the current vehicle on the ramp and the target inclination angle of the current vehicle on the ramp are determined; then, the target ramp gravity is calculated based on the target gravity and the target inclination angle.

[0082] For details, please refer to Figure 2 The vehicle slope-station force analysis diagram shown can calculate the target gravity G by multiplying the target vehicle mass m of the current vehicle by the gravitational acceleration g, such as G=m*g.

[0083] The target tilt angle of the current vehicle on the ramp can be sensed by an angle sensor, or the sliding force of the current vehicle on the slope can be measured by the longitudinal acceleration sensor built into the EPB system to obtain the target tilt angle of the current vehicle on the ramp; the present invention does not specifically limit the specific process of determining the target tilt angle.

[0084] At this time, the EPB system can calculate the target ramp gravity based on the determined target gravity and target inclination angle, and a pre-designed ramp gravity calculation algorithm.

[0085] Exemplarily, the ramp gravity calculation algorithm may be specifically a ramp gravity calculation formula, such as Fμ2=G*sinθ, wherein Fμ2 represents the target ramp gravity of the current vehicle during ramp parking, G represents the target gravity of the current vehicle, and sin represents a sine operation.

[0086] Based on the above Figure 1 In the method for determining the caliper clamping force shown in FIG. 1 , in an exemplary embodiment, in step 120 , the EPB system determines the target flat-road caliper clamping force that the current vehicle needs to implement when parking on a flat road. The specific determination process can be implemented through the following steps.

[0087] The target road caliper clamping force is determined based on the current vehicle target gravity and a preset mapping relationship between the vehicle gravity and the road caliper clamping force.

[0088] It should be noted that, considering the vehicle weight, the vehicle weight refers to the gravity exerted on the vehicle and is an indicator for measuring the weight of the vehicle; specifically, the vehicle weight is the gravity exerted on the vehicle when it is stationary, usually measured in tons. In order to improve the accuracy and efficiency of determining the clamping force of the road caliper, a mapping relationship between vehicle gravity and road caliper clamping force can be established and stored in advance according to the road caliper clamping force required for different vehicle weights. This allows the mapping relationship to be directly called later and the target road caliper clamping force corresponding to the target gravity of the current vehicle to be quickly determined.

[0089] Exemplarily, vehicle gravity is also the vehicle weight, such as the gravity of the vehicle; in addition, the required flat-road caliper clamping force when the vehicle gravity is 1 ton is 6000 Newtons, and the required flat-road caliper clamping force when the vehicle gravity is 1 ton is 3000 Newtons; thereby establishing a mapping relationship between vehicle gravity and flat-road caliper clamping force.

[0090] Based on the above Figure 1 The caliper clamping force determination method shown in an exemplary embodiment, in step 130, the EPB system determines the full-condition parking caliper clamping force of the current vehicle based on the target ramp caliper clamping force and the target flat road caliper clamping force, and the specific determination process can be achieved through the following steps.

[0091] The maximum value of the target ramp caliper clamping force and the target flat road caliper clamping force is determined as the full-condition parking caliper clamping force.

[0092] Specifically, when the target ramp caliper clamping force required to be implemented when the current vehicle is parked on a slope and the target flat road caliper clamping force required to be implemented when the current vehicle is parked on a flat road are determined, the EPB system can calculate the full-condition parking caliper clamping force based on a pre-set continuous caliper clamping force calculation algorithm.

[0093] Exemplarily, the continuous caliper clamping force calculation algorithm can be specifically a formula for calculating the maximum caliper clamping force, such as F=max(F_flat, F_slope), where F represents the full-condition parking caliper clamping force of the current vehicle, F_flat represents the target flat-road caliper clamping force that the current vehicle needs to implement when parking on a flat road, F_slope represents the target slope caliper clamping force that the current vehicle needs to implement when parking on a slope, and max represents a maximum value operation.

[0094] By using the method for determining the clamping force of the caliper provided in the embodiment of the present invention and a continuous clamping force control method calculated based on the slope, the service life of components such as the parking motor can be extended while ensuring a safe clamping force, thereby ensuring effective parking force without excessive redundancy and extending the service life of related components for long-term observation.

[0095] The caliper clamping force determination device provided by the present invention is described below. The caliper clamping force determination device described below and the caliper clamping force determination method described above can refer to each other.

[0096] Reference Figure 3 , is a schematic diagram of the structure of a caliper clamping force determination device provided in an embodiment of the present invention, such as Figure 3 As shown, the caliper clamping force determination device 300 includes: a ramp clamping force determination module 310 , a flat road clamping force determination module 320 and a continuous clamping force determination module 330 .

[0097] The ramp clamping force determination module 310 is used to determine a target ramp caliper clamping force that is required to be implemented when the vehicle is currently parked on a ramp.

[0098] The flat-road clamping force determination module 320 is used to determine the target flat-road caliper clamping force that needs to be implemented when the current vehicle is parked on a flat road.

[0099] The continuous clamping force determination module 330 is used to determine the full-condition parking caliper clamping force of the current vehicle based on the target ramp caliper clamping force and the target flat road caliper clamping force.

[0100] Optionally, the ramp clamping force determination module 310 is specifically configured to determine a target ramp gravity of the current vehicle during ramp parking; and determine a target ramp caliper clamping force based on the target ramp gravity.

[0101] Optionally, the ramp clamping force determination module 310 is further specifically used to determine the friction coefficient of the friction plate and the caliper size coefficient of the current vehicle; based on the friction coefficient of the friction plate, the caliper size coefficient and the target ramp gravity, calculate the target ramp caliper clamping force.

[0102] Optionally, the ramp clamping force determination module 310 is further specifically configured to determine a target gravity of the current vehicle on the ramp and a target inclination angle of the current vehicle on the ramp; and calculate the target ramp gravity based on the target gravity and the target inclination angle.

[0103] Optionally, the flat-road clamping force determination module 320 is specifically configured to determine a target flat-road caliper clamping force based on a current target gravity of the vehicle and a preset mapping relationship between vehicle gravity and flat-road caliper clamping force.

[0104] Optionally, the continuous clamping force determination module 330 is specifically configured to determine the maximum value of the target ramp caliper clamping force and the target flat road caliper clamping force as the full-operating-condition parking caliper clamping force.

[0105] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the caliper clamping force determination method, which includes: determining the target ramp caliper clamping force required to be implemented when the current vehicle is parked on a ramp; determining the target flat road caliper clamping force required to be implemented when the current vehicle is parked on a flat road; and determining the full-condition parking caliper clamping force of the current vehicle based on the target ramp caliper clamping force and the target flat road caliper clamping force.

[0106] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0107] In addition, an embodiment of the present invention further provides a vehicle, comprising the caliper clamping force determination device as described in the above embodiment or the electronic device as described in the above embodiment.

[0108] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the caliper clamping force determination method provided by the above-mentioned methods, which includes: determining the target ramp caliper clamping force required to be implemented when the current vehicle is parked on a ramp; determining the target flat road caliper clamping force required to be implemented when the current vehicle is parked on a flat road; based on the target ramp caliper clamping force and the target flat road caliper clamping force, determining the full-condition parking caliper clamping force of the current vehicle.

[0109] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it is implemented to execute the caliper clamping force determination method provided by the above-mentioned methods, the method comprising: determining a target ramp caliper clamping force required to be implemented when the current vehicle is parked on a ramp; determining a target flat road caliper clamping force required to be implemented when the current vehicle is parked on a flat road; and determining the full-condition parking caliper clamping force of the current vehicle based on the target ramp caliper clamping force and the target flat road caliper clamping force.

[0110] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0111] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for determining a caliper clamping force, characterized in that: include: Determine a target ramp caliper clamping force that is required to be implemented when the vehicle is currently parked on a ramp; Determining a target flat-road caliper clamping force required to be implemented when the current vehicle is parked on a flat road; Based on the target ramp caliper clamping force and the target flat road caliper clamping force, the full-operating-condition parking caliper clamping force of the current vehicle is determined.

2. The method for determining the clamping force of a caliper according to claim 1, characterized in that: The determining of the target ramp caliper clamping force required to be implemented when the vehicle is currently parked on a ramp includes: determining a target ramp gravity of the current vehicle during ramp parking; The target ramp caliper clamping force is determined based on the target ramp weight force.

3. The method for determining the clamping force of a caliper according to claim 2, characterized in that: The determining the target ramp caliper clamping force based on the target ramp gravity comprises: Determining a friction coefficient of a friction plate and a caliper size coefficient of the current vehicle; The target ramp caliper clamping force is calculated based on the friction coefficient of the friction plate, the caliper size factor and the target ramp weight.

4. The method for determining the clamping force of a caliper according to claim 2, characterized in that: The determining of the target ramp gravity of the current vehicle during ramp parking includes: Determining a target gravity of the current vehicle on the ramp and a target inclination angle of the current vehicle on the ramp; The target ramp gravity is calculated based on the target gravity and the target inclination angle.

5. The method for determining the clamping force of a caliper according to any one of claims 1 to 4, characterized in that: The determining of the target flat-road caliper clamping force required to be implemented when the current vehicle is parked on a flat road comprises: The target flat road caliper clamping force is determined based on the target gravity of the current vehicle and a preset mapping relationship between vehicle gravity and flat road caliper clamping force.

6. The method for determining the clamping force of a caliper according to any one of claims 1 to 4, characterized in that: The determining, based on the target ramp caliper clamping force and the target flat road caliper clamping force, of the full-operating-condition parking caliper clamping force of the current vehicle comprises: The maximum value of the target ramp caliper clamping force and the target flat road caliper clamping force is determined as the full-operating-condition parking caliper clamping force.

7. A device for determining the clamping force of a caliper, characterized in that: include: A ramp clamping force determination module, used to determine a target ramp caliper clamping force that is required to be implemented when the vehicle is currently parked on a ramp; A flat-road clamping force determination module, used to determine a target flat-road caliper clamping force required to be implemented when the current vehicle is parked on a flat road; The continuous clamping force determination module is used to determine the full-operating-condition parking caliper clamping force of the current vehicle based on the target ramp caliper clamping force and the target flat road caliper clamping force.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the caliper clamping force determination method according to any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the caliper clamping force determination method according to any one of claims 1 to 6 is implemented.

10. A vehicle, characterized in that: It comprises the caliper clamping force determination device as claimed in claim 7 or the electronic device as claimed in claim 8.

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