BRAKING SYSTEM FOR A VEHICLE AND METHOD TO USE IT

Abstract

A braking system (100) for a vehicle (112) comprises a speed sensor (102), an electromagnetic braking system (108), and a friction braking system (110), and a control unit (106) that is operationally coupled to the electromagnetic braking system (108) and the friction braking system (110). The control unit (106) is configured to: receive a signal from a brake pedal sensor indicating a request to reduce the vehicle's speed; receive the vehicle's (112) speed from the speed sensor (102); compare the vehicle's (112) speed with a predefined speed value; and actuate the electromagnetic braking system (108) or the friction braking system (110), or both, based on the comparison of the vehicle's (112) speed with the predefined speed value.The friction braking system (110) is activated when the braking torque developed by the electromagnetic braking system (108) is less than a calculated value of the required braking torque.

Description

TECHNICAL AREA

[0001] The present invention relates to the field of vehicle braking systems in general. In particular, the present invention provides a braking system and a method for braking a vehicle. BACKGROUND

[0002] In a vehicle like a car or other vehicle, friction brakes consume more energy during city driving. While applying friction brakes releases brake dust, they are also crucial for passenger safety. Therefore, it is necessary to reduce the use of friction brakes under certain driving conditions, especially in electric vehicles. This would make the vehicle more environmentally friendly.

[0003] Furthermore, electric vehicles have a transition phase from regenerative braking to friction braking, during which the brake pedal feels spongy to the driver.

[0004] The transition from regenerative braking to friction braking is delayed and uneven. While there have been developments in braking systems to synchronize both, none have proven advantageous. The delay occurs because the regenerative braking is triggered the first time the brake pedal is applied, which the driver does not feel. The friction brakes are only activated after a certain pedal travel, which is why the pedal initially feels spongy and requires multiple presses. This spongy pedal feel causes panic among drivers, which is a significant safety and comfort concern.

[0005] Furthermore, friction brakes generate significant heat, leading to brake fade and reduced performance. The constant use of friction brakes causes wear on brake pads and discs, shortening the lifespan of these components and increasing maintenance costs. Additionally, energy is lost as heat during braking, reducing the vehicle's overall efficiency and fuel consumption. Brake dust also contributes to environmental pollution. Friction brakes produce noise and vibrations, resulting in an unpleasant driving experience.

[0006] Patent DE102020216139A1 discloses a method for braking a vehicle in which a required braking torque is determined, a first braking torque is generated by operating an electric machine as a generator, wherein the electric machine is kinematically coupled to a wheel of the vehicle and electrically connected to an electrical energy storage device, and a second braking torque is generated by actuating a magnetic friction brake such that the sum of the first and the second braking torque corresponds to the required braking torque, wherein the magnetic friction brake has an electromagnetic actuator that presses a first friction lining against a second friction lining that is kinematically coupled to the wheel of the vehicle, wherein, when the magnetic friction brake is actuated, the electrical power required is generated at least partially by the generator operation of the electric machine.

[0007] Here, the use of both the magnetic brake and the friction brake to generate a relevant braking torque during braking is disclosed, which is not useful as it does not disclose any speed limit-based braking.

[0008] While current techniques reveal various systems and methods relating to different aspects of vehicle braking systems, there is still a need and scope for providing an improved solution for a vehicle braking system. TASKS OF THE PRESENT INVENTION

[0009] A general object of the present invention is to provide a braking system and a corresponding method that overcomes the limitations of existing systems / methods for braking a vehicle.

[0010] The object of the present invention is to provide a braking system that operates on the basis of a combination of an electromagnetic braking system and a friction braking system.

[0011] Another object of the present invention is to provide an electromagnetic brake dust guard that also functions as an electromagnetic braking system.

[0012] Another object of the present invention is to provide an electromagnetic brake dust protection system that can be retrofitted to existing vehicles without hardware modifications. SUMMARY

[0013] Aspects of the present invention relate to the field of vehicle braking systems in general. In particular, the present invention provides a braking system and a method for braking a vehicle. Also disclosed is an electromagnetic brake dust shield that functions as an electromagnetic brake.

[0014] In one aspect, the proposed braking system for a vehicle comprises an electromagnetic braking system, a friction braking system, and a control unit operationally coupled to the electromagnetic braking system and the friction braking system, wherein the control unit comprises a processor coupled to a memory, the memory storing one or more instructions that can be executed by the processor to: (i) receive an input from a brake pedal sensor coupled to a brake pedal of the vehicle indicating a need to reduce the vehicle's speed; (ii) obtain the vehicle's speed from at least one vehicle speed sensor; (iii) compare the obtained vehicle speed with a predefined speed value;and (iv) to activate the electromagnetic braking system and / or the friction braking system based on a comparison of the speed with the predefined speed value.;

[0015] In one embodiment, the control unit, in response to receiving an input indicating the need to reduce the vehicle's speed, can be configured to (i) determine the position of a brake pedal at the processor based on inputs from the brake pedal sensor; and (ii) calculate a value of the required braking torque at the processor based on the determined position of the brake pedal.

[0016] In one embodiment, the control unit can be configured to: (i) activate the electromagnetic braking system alone when the vehicle speed is less than the predefined speed value; and (ii) activate the friction braking system together with the electromagnetic braking system when the vehicle speed is greater than the predefined speed value, depending on a braking torque developed by the electromagnetic braking system, wherein the friction braking system is activated when the braking torque developed by the electromagnetic braking system is less than the calculated value of the required braking torque.

[0017] In one embodiment, the electromagnetic braking system can comprise a first dust cover arranged on one side of a brake disc, a second dust cover arranged on the other side of the brake disc, and a plurality of insulated coils arranged on the first and second dust covers such that, when excited, the coils on the two dust covers generate opposite magnetic poles on the two sides of the brake disc. These opposite magnetic poles generate eddy currents in the brake disc, which oppose the rotation of the brake disc to produce the braking torque.

[0018] In another aspect of the invention, a method for braking a vehicle comprises the following steps: (i) receiving an input from a brake pedal sensor coupled to a brake pedal of the vehicle at a processor of a control unit indicating a request to reduce the speed of the vehicle; (ii) obtaining the speed of the vehicle by the processor from at least one speed sensor of the vehicle; (iii) comparing the obtained speed of the vehicle with a predefined speed value; and (iv) actuating the electromagnetic braking system and / or the friction braking system by the processor based on the comparison of the speed with the predefined speed value.

[0019] In one embodiment, the method further comprises the step of: determining a position of a brake pedal based on inputs from the brake pedal sensor at the processor in response to receiving the input indicating the request to reduce the vehicle's speed; and calculating a value of the required braking torque based on the determined position of a brake pedal at the processor.

[0020] In one embodiment, the method further comprises the step of: activating the electromagnetic braking system alone when the vehicle speed is less than the predefined speed value; and activating the friction braking system together with the electromagnetic braking system when the vehicle speed is greater than the predefined speed value, wherein the friction braking system is activated when a braking torque developed by the electromagnetic braking system is less than the calculated value of the required braking torque.

[0021] Another aspect of the present invention relates to an electromagnetic brake dust shield. The disclosed invention comprises a first dust cover for positioning on one side of a brake disc, and a second dust cover for positioning on the other side of the brake disc (206). Furthermore, the electromagnetic brake dust shield comprises a plurality of insulated coils configured on the first and second dust covers such that, when excited, the coils positioned on the two dust covers generate opposite magnetic poles on the two sides of the brake disc. The opposite magnetic poles generate eddy currents in the brake disc, which oppose the rotation of the brake disc to produce a braking torque.

[0022] In one embodiment, the first dust cover and the second dust cover can have multiple embossings or supports, and the multiple insulated coils can be arranged around the multiple embossings or supports.

[0023] In one embodiment, the first dust cover and the second dust cover can include a plurality of guide pins such that, when the first dust cover and the second dust cover are positioned on opposite sides of the brake disc, the guide pins ensure the alignment of the two dust covers, so that the plurality of insulated coils on the two dust covers are aligned on opposite sides of the brake disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings serve to further understand the present invention and are an integral part of this description. The drawings illustrate exemplary embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. Fig. Figure 1 shows an exemplary block diagram illustrating various elements of the proposed braking system for a vehicle and its general operation according to the embodiments of the present invention. Fig. Figure 2A shows an exemplary electromagnetic braking system in conjunction with the proposed braking system installed in the vehicle according to an embodiment of the present invention. Fig. 2B and Fig. Figure 2C shows an example of electromagnetic brake dust shielding of the electromagnetic braking system according to an embodiment of the present invention. Fig. Figure 3 shows an exemplary schematic representation of the magnetic field generated by the electromagnetic brake dust shielding according to an embodiment of the present invention. Fig. 4A and Fig. Figure 4B shows an exemplary graphical representation of the relationship between a real-time brake lever / pedal position and the required braking torque based on the real-time speed of the vehicle according to an embodiment of the present invention. Fig. Figure 5 shows a flowchart of a proposed method for braking a vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] A detailed description of embodiments of the invention, illustrated in the accompanying drawings, follows. The embodiments are described in sufficient detail to clearly convey the invention. However, this level of detail is not intended to limit foreseeable variations of embodiments; rather, it is intended to cover all modifications, equivalents, and alternatives that fall within the spirit and scope of the present inventions as defined by the accompanying claims.

[0026] The embodiments described herein generally relate to the field of vehicle braking systems. In particular, the present invention provides a braking system and a method for braking a vehicle. A retrofittable electromagnetic brake dust shield is also disclosed, which functions as an electromagnetic brake.

[0027] When braking, the driver first releases the accelerator pedal and then depresses the brake pedal. When the brake pedal is depressed, an electronic stability program (ESP) decides, based on the vehicle's speed, the required braking torque, and the pedal position, whether the magnetic braking system alone is sufficient to stop the vehicle. If not, the friction brakes are also engaged in addition to the magnetic brakes. This would resolve the currently reported issues with pedal feel, as no torque superposition between regenerative braking and friction braking is required when the brake pedal is depressed.

[0028] Various embodiments of the present invention disclose a braking system, a method for braking a vehicle, and an electromagnetic brake dust shield. The proposed braking system and the associated method are based on a combination of an electromagnetic braking system and a friction braking system, wherein the electromagnetic braking system and the friction braking system are used depending on the vehicle speed and a required braking torque.

[0029] The proposed electromagnetic brake dust shield for vehicles comprises a first dust shield on one side of the brake disc and a second dust shield on the other side. The dust shields include insulated coils, guide pins, and holders / embossings to accommodate the insulated coils. When the insulated coils are energized, opposite magnetic poles are created on the two sides of the brake disc, generating eddy currents that oppose the rotation of the brake disc and produce a braking torque.

[0030] With reference to the Fig. 1, Fig. 2 to Fig. 3, in which various elements of the proposed braking system 100 (here interchangeably referred to as system 100) for a vehicle and its general operation are shown, including the electromagnetic braking system 108 connected to the proposed braking system 100 and an electromagnetic brake dust guard 200 of the electromagnetic braking system 108, the braking system 100 comprising a speed sensor 102, an electromagnetic braking system 108 and a friction braking system 110 for reducing / decelerating the speed of the vehicle 112 and a control unit 106 which is operationally coupled to the electromagnetic braking system 108 and the friction braking system 110.

[0031] The control unit 106 can include a processor coupled with a memory that stores one or more instructions which can be executed by the processor to receive an input from a user 104 using at least one sensor, indicating the user 104's wish to activate the vehicle's braking system 112, to obtain a real-time speed of the vehicle 112 from at least the speed sensor 102, to compare the real-time speed of the vehicle 112 with a predefined speed value, and to actuate the electromagnetic braking system 108 and / or the friction braking system 110 of the vehicle 112 based on the comparison of the real-time speed with the predefined speed value.

[0032] Furthermore, the control unit 106 can be configured so that, in the event of receiving the input indicating the user's 104 wish to activate the braking system, it determines the position of the brake lever operated by the user 104 in the processor using one or more position sensors and calculates a required braking torque in the processor.

[0033] Additionally, the control unit 106 can be configured so that the processor activates the electromagnetic braking system 108 to reduce the speed of the vehicle 112 when the vehicle 112's speed is below the predefined speed value. Conversely, if the vehicle 112's speed is greater than the predefined speed value, the processor can activate the friction braking system 110 together with the electromagnetic braking system 108 to decelerate the vehicle 112.

[0034] Furthermore, the friction braking system 110 can be activated if the electromagnetic braking torque generated by the electromagnetic braking system 108 is less than the required braking torque determined from the brake pedal position.

[0035] If the vehicle is a hybrid or electric vehicle, the system 100 can use a generator or generator motor 114 of the vehicle for regenerative braking by charging a battery 116 of the vehicle 112 by drawing energy from the wheels of the vehicle.

[0036] As shown in Figures 200a, 200b and 200c of the Fig. Figures 2A to 2C disclose an electromagnetic brake dust shield (EBDS) 200. The EBDS 200 can comprise a first dust cover 202, which is mounted on one side of a brake disc 206, and a second dust cover 204, which is mounted on the other side of the brake disc 206. The first dust cover 202 and the second dust cover 204 can comprise a plurality of insulated coils 208 on a plurality of coil holders (or embossings) 210 and a plurality of guide pins 212 to engage and align the first dust cover 202 with the second dust cover 204. The guide pins 212 can ensure the alignment of the two dust covers 202, 204, such that the multiple insulated coils 208 on the two dust covers 202, 204 are aligned on opposite sides of the brake disc 206.

[0037] In one embodiment, the two dust covers 202, 204 with the insulated coils 208, when mounted on opposite sides of the brake disc 206, form an electromagnetic dust cover (EBDS) for the brake disc 206 and are part of the electromagnetic braking system 108. To actuate the electromagnetic braking system 108, the majority of the insulated coils 208 can be energized. The insulated coils 208 are arranged on the first dust cover 202 and the second dust cover 204 such that, when energized, the first dust cover 202 and the second dust cover 204 generate opposite magnetic poles, which induce eddy currents in the brake disc 206 that oppose the rotation of the rotating brake disc to generate a braking torque.

[0038] In Fig. In the figure, which shows the magnetic field generated by the electromagnetic brake dust shield 200, the magnetic field 302 generated by the plurality of insulated coils 208 extends through the rotating brake disc 206. As the disc 206 rotates within this magnetic region 302, it experiences changes in magnetic flux, which induce circulating currents, so-called eddy currents, within the disc 206. The changing eddy currents generate their own magnetic region, which opposes the initial magnetic field generated by the plurality of insulated coils 208. This opposition generates a force that acts on the rotation of the disc 206, thus producing the braking torque.

[0039] In one embodiment, the first dust cover 202 and the second dust cover 204 can have openings in the area of ​​the bridge for better airflow to cool the brake disc 206.

[0040] With reference to the Fig. 4A and Fig. Figures 4B and 400b are exemplary graphical representations of a real-time brake pedal position (BPP) and the required braking torque (BT) based on the real-time speed of the vehicle 112 according to an embodiment of the present invention. If the real-time speed of the vehicle 112 is less than or equal to the predefined speed value, as shown in Figure 4B, the brake pedal position is adjusted accordingly. Fig. 4A can be seen, only the electromagnetic braking system 108 with the regenerative braking of the vehicle 112 is used to reduce the real-time speed of the vehicle 112.

[0041] If the real-time speed of the vehicle is 112 above the predefined speed value, as described in Fig. 4B shows the friction braking system 110 together with the electromagnetic braking system 108 and the regenerative braking of the vehicle 112 being used to reduce the real-time speed of the vehicle 112.

[0042] Here, diagram 402 illustrates the use of regenerative braking by the vehicle 112, diagram 404 the use of the electromagnetic braking system 108, and diagram 406 the use of the friction braking system 110. As in Fig. As can be seen in 4B, the friction braking system 110 is used to a limited extent together with the electromagnetic braking system 108.

[0043] Furthermore, in Fig. Figure 5 shows a flowchart of a proposed method 500 (here interchangeably referred to as method 500) for braking a vehicle according to an embodiment of the present invention.

[0044] Method 500 for braking a vehicle 112 comprises, in step 510, receiving an input from a user 104 at a processor of a control unit 106 using at least one sensor, indicating a request from the user 104 to activate the braking system of the vehicle 112. In step 520, method 500 comprises obtaining a real-time speed of the vehicle 112 from at least one speed sensor 102 at the processor, and in step 530, method 500 comprises comparing the real-time speed of the vehicle 112 with a predefined speed value at the processor. In step 540, method 500 comprises the actuator of an electromagnetic braking system 108 and / or a friction braking system 110 of the vehicle 112 by the processor, based on the comparison of the real-time speed with the predefined speed value.

[0045] In one embodiment, the method 500, in the case of receiving the input indicating the user 104's wish to activate the braking system, may include the determination of a real-time position of the brake lever actuated by the user 104 by the processor using one or more position sensors and the calculation of a desired braking torque by the processor that is required to reduce the real-time speed of the vehicle 112 to zero.

[0046] In one embodiment, actuation step 540 may include the processor activating the electromagnetic braking system 108 to reduce the real-time speed of the vehicle 112 when the real-time speed of the vehicle 112 is less than or equal to the predefined speed value, or the processor activating the friction braking system 110 together with the electromagnetic braking system 108 to reduce the real-time speed of the vehicle 112 when the real-time speed of the vehicle 112 is greater than the predefined speed value.

[0047] Furthermore, the electromagnetic braking torque of the electromagnetic braking system 108, which is required to activate the friction braking system 110 in order to reduce the real-time speed of the vehicle 112 to zero, is less than or equal to the desired braking torque.

[0048] In another embodiment, the electromagnetic braking system 108 can comprise an EBDS 200 consisting of a first dust cover 202 on one side of a brake disc 206 and a second dust cover 204 on the other side of the brake disc 206. The first dust cover 202 and / or the second dust cover 204 can further comprise a plurality of insulated coils 208 on a plurality of coil holders (or embossings) 210 and a plurality of guide pins 212 to engage the first dust cover 202 with the second dust cover 204.

[0049] In a further embodiment, each of the multiple insulated coils 208 can be positioned on the first dust cover 202 and the second dust cover 204 such that the first dust cover 202 and the second dust cover 204 generate opposite magnetic poles when an electric current flows through the multiple insulated coils 208 at the time of actuation of the electromagnetic braking system 108, wherein the generated magnetic field 302 flows through the brake disc 206 and generates eddy currents that oppose the rotation of the rotating brake disc 206, resulting in the braking torque due to the electromagnetic braking system.

[0050] The advantages of the proposed braking system and method include the generation of a magnetic flux upon application of the dust shield, the stopping of the rotating disc by the magnetic flux generated by the dust shield, the provision of a two-part, inverted U-shaped dust shield covering the inner and outer surfaces of the brake disc, the uniform distribution of braking torque across the entire surface of the brake disc to improve performance, the elimination of undesirable torque mixing between regenerative braking and friction braking in EV vehicles, the elimination of spongy / jerky / unpleasant pedal sensations caused by torque mixing, the joining of the two dust shield parts by a guide pin to stop the relative movement between them, and wires 214 being guided and clamped along the inner edge of the dust covers 202, 204.and adaptable design for different vehicle segments.

[0051] EBDS can also be used in conjunction with friction braking, which, as a new concept in brake-by-wire technology, eliminates the need for brake boosters, brake fluid, and brake calipers. EBDS contributes to sustainability by minimizing brake dust emissions.

[0052] System 100 minimizes brake disc heating, thereby reducing judder, increasing the service life of brake pads and discs, and reducing the size and weight of the brake system. It integrates easily with advanced driver assistance systems (ADAS) for autonomous braking and can be installed in existing vehicles with minimal modifications.

[0053] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention can be developed without deviating from the fundamental scope of the invention. The scope of the invention is defined by the following claims. The invention is not limited to the described embodiments, variants, or examples, provided that they are included to enable a person with ordinary technical knowledge to manufacture and use the invention when combined with information and knowledge available to such a person. ADVANTAGES OF THE PRESENT INVENTION

[0054] The present invention provides a braking system and a corresponding method that eliminates the limitations of existing systems / methods for braking a vehicle.

[0055] The present invention provides a braking system based on a combination of an electromagnetic braking system and a friction braking system.

[0056] The present invention provides an electromagnetic brake dust guard that also functions as an electromagnetic braking system.

[0057] The present invention provides an electromagnetic brake dust shield that can be retrofitted to existing vehicles without hardware modifications. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 102020216139A1

[0006]

Claims

[1] Braking system (100) for a vehicle (112), wherein the braking system (100) comprises the following: an electromagnetic braking system (108); a friction braking system (110); and a control unit (106) which is operationally coupled to the electromagnetic braking system (108) and the friction braking system (110); wherein the control unit (106) comprises a processor coupled to a memory, the memory storing one or more instructions which can be executed by the processor to: to receive an input from a brake pedal sensor coupled to a brake pedal of the vehicle, indicating a request to reduce the speed of the vehicle; The vehicle's speed (112) is obtained from at least one vehicle speed sensor (102); to compare the vehicle's obtained speed (112) with a predefined speed value; and to activate the electromagnetic braking system (108) or the friction braking system (110) based on a comparison of the speed with the predefined speed value. [2] Braking system (100) according to claim 1, wherein the control unit (106) is configured in response to receiving the input indicating the request to reduce the speed of the vehicle to: Determining the position of a brake pedal by the processor based on inputs from the brake pedal sensor; and The processor calculates a value for the required braking torque based on the determined position of the brake pedal. [3] Braking system (100) according to claim 2, wherein the control unit (106) is configured such that it: activate the electromagnetic braking system (108) alone when the vehicle speed (112) is below the predefined speed value; and to activate the friction braking system (110) together with the electromagnetic braking system (108) when the speed of the vehicle (112) is greater than the predefined speed value; wherein the activation of the friction braking system (110) occurs when a braking torque developed by the electromagnetic braking system (108) is less than the calculated value of the required braking torque. [4] Braking system (100) according to claim 1, wherein the electromagnetic braking system (108) comprises: a first dust cover (202) arranged on one side of a brake disc (206); a second dust cover (204) located on the other side of the brake disc (206); and a plurality of insulated coils (208) configured on the first dust cover (202) and the second dust cover (204) such that, when excited, the coils arranged on the two dust covers generate opposite magnetic poles on the two sides of the brake disc (206), the opposite magnetic poles generating eddy currents in the brake disc (206) which oppose the rotation of the brake disc (206) to generate a braking torque. [5] Method (500) for braking a vehicle (112), wherein the method (500) comprises: Receiving (510) an input from a brake pedal sensor coupled to a brake pedal of the vehicle at a processor of a control unit (106) indicating a request to reduce the speed of the vehicle; Detection (520) of the speed of the vehicle (112) by the processor of at least one speed sensor (102) of the vehicle; Compare (530) the obtained speed of the vehicle (112) with a predefined speed value; and Actuation (540) of the electromagnetic braking system (108) or the friction braking system (110) by the processor, based on the comparison of the speed with the predefined speed value. [6] Method (500) according to claim 5, comprising: Determining the position of a brake pedal based on inputs from the brake pedal sensor in the processor in response to receiving the input indicating the need to reduce the vehicle's speed; and The processor calculates a value for the required braking torque based on the determined position of a brake pedal; [7] Method (500) according to claim 6, comprising: Activating the electromagnetic braking system (108) only when the vehicle speed (112) is less than the predefined speed value; and Activation of the friction braking system (110) together with the electromagnetic braking system (108) when the speed of the vehicle (112) is greater than the predefined speed value, wherein the activation of the friction braking system (110) occurs when a braking torque developed by the electromagnetic braking system (108) is less than the calculated value of the required braking torque. [8] Electromagnetic brake dust shielding (200), comprising: a first dust cover (202) which is attached to one side of a brake disc (206); a second dust cover (204) which is arranged on the other side of the brake disc (206); and a plurality of insulated coils (208) configured on the first dust cover (202) and the second dust cover (204) such that, when excited, the coils arranged on the two dust covers generate opposite magnetic poles on the two sides of the brake disc (206), the opposite magnetic poles generating eddy currents in the brake disc (206) which oppose the rotation of the brake disc (206) to generate a braking torque. [9] Electromagnetic brake dust shield (200) according to claim 8, wherein the first dust cover (202) and the second dust cover (204) comprise a plurality of embossings or holders (210), and wherein the plurality of insulated coils (208) are arranged around the plurality of embossings or holders (210). [10] Electromagnetic brake dust shield (200) according to claim 9, wherein the first dust cover (202) and the second dust cover (204) comprise a plurality of guide pins (212) such that when the first dust cover (202) and the second dust cover (204) are positioned on opposite sides of the brake disc (206), the guide pins (212) ensure the alignment of the two dust covers, so that the plurality of insulated coils (208) on the two dust covers are aligned on opposite sides of the brake disc (206).

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