CN110497798B - Combined braking system and method - Google Patents
Combined braking system and method Download PDFInfo
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- CN110497798B CN110497798B CN201810481389.4A CN201810481389A CN110497798B CN 110497798 B CN110497798 B CN 110497798B CN 201810481389 A CN201810481389 A CN 201810481389A CN 110497798 B CN110497798 B CN 110497798B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
- B60L7/26—Controlling the braking effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/14—Combinations of different types of brakes, e.g. brake blocks acting on wheel-rim combined with disc brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention provides a combined braking system and a method, which comprise an energy feedback braking module, an air braking device, an eddy current braking device, a mechanical braking device and a multi-braking strategy controller. The invention adopts a flexible multi-brake strategy to integrate four brake modes of regenerative braking, air braking, eddy current braking and mechanical braking, greatly enhances the safety of the transport means, and simultaneously reduces the emergency braking distance of the transport means.
Description
Technical Field
The invention relates to a combined braking system and a method, belonging to the technical field of braking of high-speed transportation tools.
Background
The main function of the braking system is to stop objects such as vehicles, trains and the like running at a certain speed within a safe distance. The braking modes are classified into energy-feedback braking, air braking, eddy-current braking, mechanical braking and the like according to different mechanisms.
Patent 201410684202.2 a collection suspension, direction, impel and brake in permanent magnetism suspension locomotive system of an organic whole adopts eddy current brake, patent 200580001059.1 is equipped with eddy current brake's magnetic levitation train and adopts eddy current brake, patent 200780042933.5 magnetic levitation railway and operation method adopt mechanical brake, patent 201610077141.2 a vacuum track magnetic levitation train system adopts eddy current brake, patent 201611046462.2 a high-speed magnetic levitation train that takes controllable aerodynamic wing adopts and presents the energy braking, the aerodynamic wing plays the complementary action in the braking, the aerodynamic wing main part produces aerodynamic force when high-speed, make magnetic levitation train steady.
In summary, eddy current braking or energy feedback braking is generally adopted in the field of magnetic levitation, and mechanical braking or air braking is used as an auxiliary braking. However, due to the particularity of the vacuum pipeline rail train in the aspects of running speed, running mode and the like, the existing single braking strategy mode of one or two combined brakes is adopted, so that the braking strategy is inflexible, the safety of the single braking strategy mode is low if an emergency (such as failure of a traction power system) occurs in high-speed running, and meanwhile, the braking distance is long in the existing braking mode.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a combined braking system and method of a multi-braking strategy integrating regenerative braking, air braking, eddy current braking and mechanical braking.
The technical solution of the invention is as follows: a combined braking system comprises an energy-regenerative braking module, an air braking device, an eddy current braking device, a mechanical braking device and a multi-braking strategy controller,
the multi-brake strategy controller determines the adopted brake strategy according to the brake condition of the transport vehicle, during normal braking, the multi-brake strategy controller controls the regenerative brake module and the air brake device to work, during emergency braking, the multi-brake strategy controller adopts different brake strategies by judging whether the traction power system works effectively, if the traction power system works effectively, the multi-brake strategy controller controls the regenerative brake module, the air brake device and the eddy current brake device to work, and if the traction power system cannot work effectively, the multi-brake strategy controller controls the air brake device, the eddy current brake device and the mechanical brake device to work.
The multi-brake strategy controller comprises a brake condition analysis module, a traction power system working state monitoring module and a brake strategy control module, wherein the brake condition analysis module judges whether the brake is normal brake or emergency brake according to a brake signal sent by a main control system of the transport tool and sends a judgment result to the brake strategy control module, the traction power system working state monitoring module monitors the traction power system working state in real time and sends the traction power system working state to the brake strategy control module, and the brake strategy control module determines and implements a brake strategy according to the received brake condition judgment result and the traction power system working state.
The multi-brake strategy controller includes an operating speed monitoring module for monitoring the operating speed of the vehicle in real time.
The energy feedback braking module controls a linear motor of the traction power system to work under overload power when in energy feedback braking, and generates thrust opposite to the running direction of the transport tool.
The air brake device comprises a plurality of spoilers and spoiler unfolding and locking structures, wherein the spoilers are arranged on the periphery of a transport tool, the spoilers are arranged on the transport tool through the spoiler unfolding and locking structures, the spoilers cling to the outer side of the transport tool under the action of the spoiler unfolding and locking structures when the transport tool normally runs, and the spoilers are unfolded under the action of the spoiler unfolding and locking structures during air braking.
The eddy current braking device comprises an induction plate, a permanent magnet array and a permanent magnet movement mechanism, wherein the induction plate is arranged in the middle of a track surface of a transport tool running track, the permanent magnet array is installed below the middle of the transport tool through the permanent magnet movement mechanism, when the transport tool runs normally, the permanent magnet array is tightly attached below the middle of the transport tool under the action of the permanent magnet movement mechanism, and the permanent magnet array moves to a proper position under the action of the permanent magnet movement mechanism during eddy current braking and generates eddy current braking force under the action of the induction plate.
The relative distance between the induction plate and the permanent magnet array is controlled by the permanent magnet movement mechanism to generate different eddy current braking forces.
The mechanical braking device comprises a roadbed slide rail, a vehicle body slide rail and a vehicle body slide rail movement mechanism, wherein the roadbed slide rail is arranged on the outer side of the sensing plate and on the inner side of the movement rail, the vehicle body slide rail is arranged at the bottom of the transport tool, the vehicle body slide rail moves in the vertical direction through the vehicle body slide rail movement mechanism, when the transport tool operates normally, the vehicle body slide rail rises under the action of the vehicle body slide rail movement mechanism, and when the mechanical braking is performed, the vehicle body slide rail is put down under the action of the vehicle body slide rail movement mechanism and rubs with the.
The roadbed slide rail and the vehicle body slide rail are made of materials such as graphite and the like which can meet the mechanical braking requirement of a suspension system.
When the running speed of the transport vehicle is 100-150 km/h, the multi-brake strategy controller controls the mechanical brake device to work.
A combined braking method is realized by the following steps:
firstly, normally operating a transport tool;
judging the braking condition of the transport tool, determining the adopted braking strategy, if the braking is normal, turning to the third step, and if the braking is emergency, turning to the fourth step;
and thirdly, adopting a first braking strategy,
the first braking strategy adopts a combined braking mode of regenerative braking and air braking;
fourthly, judging whether the traction power system works effectively under the condition of emergency braking, if so, turning to the fifth step, and if not, turning to the sixth step;
and fifthly, adopting a second braking strategy,
a braking strategy II adopts a combined braking mode of regenerative braking, air braking and eddy current braking;
and sixthly, adopting a braking strategy III,
and a third braking strategy is to adopt a combined braking mode of air braking, eddy current braking and mechanical braking.
And in the sixth step, a combined braking mode of air braking and eddy current braking is adopted, and when the condition that the running speed of the transport means is lower than the mechanical braking starting speed threshold value is monitored, mechanical braking is increased.
The mechanical brake starting speed threshold is determined according to the structure and the material adopted by mechanical brake and the magnitude of the braking force required to be provided, and is generally not higher than 200km/h, preferably 100-150 km/h.
The brake strategy is characterized in that feed-through brake and air brake are started simultaneously.
And the feed energy brake, the air brake and the eddy current brake are started simultaneously in the second brake strategy.
And in the third braking strategy, air braking and eddy current braking are started simultaneously.
The regenerative braking in the first braking strategy and the second braking strategy is realized by controlling a linear motor of a traction power system to work under overload power to generate thrust opposite to the running direction of a transport tool.
The air brake in the first, second and third brake strategies is realized through an air brake device, the air brake device comprises a plurality of spoilers and spoiler unfolding and locking structures, the spoilers are installed on the transportation tool through the spoiler unfolding and locking structures, the spoilers cling to the outer side of the transportation tool under the action of the spoiler unfolding and locking structures when the transportation tool is in normal operation, and the spoilers are unfolded under the action of the spoiler unfolding and locking structures during air brake.
Eddy current brake in braking strategy two, the third in realize through eddy current brake equipment, eddy current brake equipment include tablet, permanent magnet array and permanent magnet motion, the orbital orbit surface of transport is arranged to the tablet, the permanent magnet array passes through permanent magnet motion and installs in transport middle part below, when transport normal operating, the permanent magnet array hugs closely in transport middle part below under the effect of permanent magnet motion, the permanent magnet array moves to suitable position under the effect of permanent magnet motion during eddy current brake, produces eddy current brake force with the tablet effect.
The relative distance between the induction plate and the permanent magnet array is controlled by the permanent magnet movement mechanism to generate different eddy current braking forces.
And the sum of the braking force of regenerative braking and eddy current braking in the second braking strategy is equal to the sum of the braking force of eddy current braking and mechanical braking in the third braking strategy.
Mechanical braking in braking tactics three realize through mechanical braking device, mechanical braking device include road bed slide rail, automobile body slide rail and automobile body slide rail motion, the road bed slide rail is arranged in the tablet outside, the orbit is inboard, the automobile body slide rail is arranged in the transport means bottom, realize the motion of automobile body slide rail vertical direction through automobile body slide rail motion, the transport means normal operating, the automobile body slide rail rises under the effect of automobile body slide rail motion, when mechanical braking, the automobile body slide rail is put down under the effect of automobile body slide rail motion, produce the brake force with road bed slide rail friction.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention adopts a flexible multi-brake strategy to integrate four brake modes of regenerative braking, air braking, eddy current braking and mechanical braking, thereby greatly enhancing the safety of the transport means and simultaneously reducing the emergency braking distance of the transport means;
(2) the invention adopts different braking strategies under different braking conditions, during normal braking, the four braking modes are started according to different priorities according to different conditions, and therefore, the four braking modes are stopped at a set position within a safe distance and the braking overload is ensured within a human body bearable range;
(3) according to the invention, the air brake adopts a mode of arranging the spoilers, the spoilers are opened when the transportation tool needs to decelerate, the sectional area of the transportation tool is increased, the flow area in the pipeline is reduced, and the effective brake of the pipeline transportation tool at a high speed is realized;
(4) according to the invention, the eddy current induction plate is arranged beside the running track in eddy current braking, the controllable permanent magnet is arranged at the bottom ground position of the transportation tool, and the controllable braking distance of the pipeline transportation tool is realized by changing the relative position of the permanent magnet and the induction plate to control the magnitude of eddy current braking force;
(5) the graphite slide rail is arranged beside the running rail in the mechanical brake, the telescopic wear-resistant graphite block is arranged at the bottom of the transport tool, the transport tool is matched with air brake for use when the transport tool needs emergency brake, and when the speed of the transport tool is reduced to a certain speed, the graphite block and the slide rail generate friction force to brake the transport tool in a short distance;
(6) the reasonable layout of air braking, eddy current braking and mechanical braking ensures that the pipeline transportation tool has compact structure and each braking mode can be smoothly realized.
Drawings
FIG. 1 is a theoretical block diagram of the present invention;
FIG. 2 is a schematic view of an air brake deployment and layout according to an embodiment of the present invention;
FIG. 3 is a schematic view of the layout of an eddy current braking device according to an embodiment of the present invention
FIG. 4 is a schematic layout view of a mechanical brake apparatus according to an embodiment of the present invention;
FIG. 5 is a control flow chart of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following examples and accompanying drawings.
Example 1
The invention provides a combined brake system, as shown in fig. 1, which comprises an energy-regenerative brake module, an air brake device, an eddy current brake device, a mechanical brake device and a multi-brake strategy controller.
The multi-brake strategy controller comprises an operation speed monitoring module, a brake condition analysis module, a traction power system working state monitoring module and a brake strategy control module. The running speed monitoring module is used for monitoring the running speed of the transport tool in real time; the braking condition analysis module judges whether the vehicle is in a normal braking condition or an emergency braking condition according to a braking signal sent by a main control system of the transport vehicle, and sends a judgment result to the braking strategy control module; the working state monitoring module of the traction power system monitors the working state of the traction power system in real time and sends the working state of the traction power system to the braking strategy control module; the braking strategy control module determines and implements a braking strategy according to the received braking condition judgment result and the working state of the traction power system, and controls the regenerative braking module and the air braking device to work simultaneously when the braking is normal; during emergency braking, the braking strategy control module adopts different braking strategies by judging whether the traction power system works effectively, if the traction power system works effectively, the braking strategy control module controls the regenerative braking module, the air braking device and the eddy current braking device to work simultaneously, if the traction power system cannot work effectively, the braking strategy control module firstly controls the air braking device and the eddy current braking device to work, and when the running speed monitoring module monitors that the running speed is 100-150 km/h, the braking strategy control module controls the mechanical braking device to work.
The multi-braking strategy controller is arranged in a main control computer of a transport means, and the functions of all modules can be realized by adopting general software programming.
The energy feedback braking module controls a linear motor of a traction power system of the transport tool to work under overload power when in energy feedback braking, and generates thrust opposite to the running direction of the transport tool. Regenerative braking is well known in the art and is determined by those skilled in the art based on the braking force required and the type of linear motor used.
The air brake device is shown in fig. 2, and comprises a plurality of spoilers and spoiler unfolding and locking structures, wherein the spoilers are arranged on the periphery of a transport tool, the spoilers are arranged on the transport tool through the spoiler unfolding and locking structures, the spoilers cling to the outer side of the transport tool under the action of the spoiler unfolding and locking structures when the transport tool runs, and the spoilers are unfolded under the action of the spoiler unfolding and locking structures during air braking.
The structure and the distribution of the spoilers are obtained through aerodynamic simulation according to the braking force required by air braking. The spoiler unfolding and locking structure can be designed by taking the reference of an unfolding and locking device of a folding wing of an existing aircraft, if a plug structure or a shearing structure and the like can be adopted, a power source can be in a pneumatic or hydraulic mode and the like, and the spoiler unfolding and locking structure is designed by a person skilled in the art according to the requirements of specific required locking force, unfolding speed and the like.
The eddy current braking device comprises an induction plate, a permanent magnet array and a permanent magnet movement mechanism, wherein the induction plate is arranged in the middle of a track surface of a transport tool, the permanent magnet array is installed below the middle of the transport tool through the permanent magnet movement mechanism and symmetrically distributed, when the transport tool normally runs, the permanent magnet array is tightly attached below the middle of the transport tool under the action of the permanent magnet movement mechanism, and the permanent magnet array moves to a proper position under the action of the permanent magnet movement mechanism during eddy current braking and generates eddy current braking force under the action of the induction plate. The relative distance between the induction plate and the permanent magnet array is controlled by the permanent magnet movement mechanism to generate different eddy current braking forces. In the example, different emergency braking and different braking force generated by the eddy current braking device, the sum of the braking force of the energy feedback braking and the eddy current braking is equal to the sum of the braking force of the eddy current braking and the mechanical braking.
The mechanical brake device is arranged outside the eddy current brake device and inside the transport vehicle running track as shown in fig. 2 and 4, the track comprises a roadbed slide rail, a vehicle body slide rail and a vehicle body slide rail motion mechanism, the roadbed slide rail is arranged outside the induction plate, the vehicle body slide rail is arranged at the bottom of the transport vehicle, the vehicle body slide rail motion mechanism is used for realizing the motion of the vehicle body slide rail in the vertical direction, when the transport vehicle runs normally, the vehicle body slide rail is lifted under the action of the vehicle body slide rail motion mechanism and is not in contact with the roadbed slide rail, and when the mechanical brake device is used, the vehicle body slide rail is put down under the action of the vehicle body slide. In this example, the road bed slide rail and automobile body slide rail all adopt graphite material to make.
In the combined brake system according to the invention, the braking force provided by the individual braking modes is determined on the basis of the total braking force required by the vehicle in the different braking situations. When the braking force is distributed, the capability of the braking force provided by each braking mode is comprehensively considered, and the design difficulty of each braking mode is reduced as much as possible.
Example 2
The invention also provides a combined braking method, as shown in fig. 5, which is realized by the following steps:
1. the transportation tool runs normally;
2. judging the braking condition of the transport tool, determining the adopted braking strategy, if the braking is normal, turning to the step 3, and if the braking is emergency, turning to the step 4;
3. by adopting the first braking strategy, the brake device is,
the first braking strategy adopts a combined braking mode of regenerative braking and air braking; regenerative braking and air braking are activated simultaneously.
4. Judging whether the traction power system works effectively under the condition of emergency braking, if so, turning to the step 5, and if not, turning to the step 6;
step 5, adopting a second braking strategy,
a braking strategy II adopts a combined braking mode of regenerative braking, air braking and eddy current braking; regenerative braking, air braking and eddy current braking are activated simultaneously.
Step 6, adopting a braking strategy III,
a braking strategy III adopts a combined braking mode of air braking, eddy current braking and mechanical braking; and starting air brake and eddy current brake simultaneously, and increasing mechanical brake when the running speed of the transport vehicle is monitored to be lower than the mechanical brake starting speed threshold.
In this example, the threshold of the mechanical brake starting speed is 100-150 km/h.
The invention has not been described in detail and is in part known to those of skill in the art.
Claims (12)
1. A combined brake system, characterized in that: comprises an energy-regenerative braking module, an air braking device, an eddy current braking device, a mechanical braking device and a multi-braking strategy controller,
the multi-brake strategy controller determines the adopted brake strategy according to the brake condition of the transport vehicle, during normal braking, the multi-brake strategy controller controls the regenerative brake module and the air brake device to work, during emergency braking, the multi-brake strategy controller adopts different brake strategies by judging whether the traction power system works effectively, if the traction power system works effectively, the multi-brake strategy controller controls the regenerative brake module, the air brake device and the eddy current brake device to work, and if the traction power system cannot work effectively, the multi-brake strategy controller controls the air brake device, the eddy current brake device and the mechanical brake device to work.
2. A combined brake system according to claim 1, wherein: the multi-brake strategy controller comprises a brake condition analysis module, a traction power system working state monitoring module and a brake strategy control module, wherein the brake condition analysis module judges whether the brake is normal brake or emergency brake according to a brake signal sent by a main control system of the transport tool and sends a judgment result to the brake strategy control module, the traction power system working state monitoring module monitors the traction power system working state in real time and sends the traction power system working state to the brake strategy control module, and the brake strategy control module determines and implements a brake strategy according to the received brake condition judgment result and the traction power system working state.
3. A combined brake system according to claim 1, wherein: the multi-brake strategy controller comprises a running speed monitoring module for monitoring the running speed of the transport vehicle in real time.
4. A combined brake system according to claim 1, wherein: the air brake device comprises a plurality of spoilers and spoiler unfolding and locking structures, wherein the spoilers are arranged on the periphery of a transport tool, the spoilers are arranged on the transport tool through the spoiler unfolding and locking structures, the spoilers cling to the outer side of the transport tool under the action of the spoiler unfolding and locking structures when the transport tool normally runs, and the spoilers are unfolded under the action of the spoiler unfolding and locking structures during air braking.
5. A combined brake system according to claim 1, wherein: the energy feedback braking module controls a linear motor of the traction power system to work under overload power when in energy feedback braking, and generates thrust opposite to the running direction of the transport tool; the eddy current braking device comprises an induction plate, a permanent magnet array and a permanent magnet movement mechanism, wherein the induction plate is arranged in the middle of a track surface of a transport tool running track, the permanent magnet array is installed below the middle of the transport tool through the permanent magnet movement mechanism, when the transport tool runs normally, the permanent magnet array is tightly attached below the middle of the transport tool under the action of the permanent magnet movement mechanism, and the permanent magnet array moves to a proper position under the action of the permanent magnet movement mechanism during eddy current braking and generates eddy current braking force under the action of the induction plate.
6. A combined brake system according to claim 5, characterised in that: the mechanical braking device comprises a roadbed slide rail, a vehicle body slide rail and a vehicle body slide rail movement mechanism, wherein the roadbed slide rail is arranged on the outer side of the sensing plate and on the inner side of the movement rail, the vehicle body slide rail is arranged at the bottom of the transport tool, the vehicle body slide rail moves in the vertical direction through the vehicle body slide rail movement mechanism, when the transport tool operates normally, the vehicle body slide rail rises under the action of the vehicle body slide rail movement mechanism, and when the mechanical braking is performed, the vehicle body slide rail is put down under the action of the vehicle body slide rail movement mechanism and rubs with the.
7. A combined braking method, characterized by the following steps:
firstly, normally operating a transport tool;
judging the braking condition of the transport tool, determining the adopted braking strategy, if the braking is normal, turning to the third step, and if the braking is emergency, turning to the fourth step;
and thirdly, adopting a first braking strategy,
the first braking strategy adopts a combined braking mode of regenerative braking and air braking;
fourthly, judging whether the traction power system works effectively under the condition of emergency braking, if so, turning to the fifth step, and if not, turning to the sixth step;
and fifthly, adopting a second braking strategy,
a braking strategy II adopts a combined braking mode of regenerative braking, air braking and eddy current braking;
and sixthly, adopting a braking strategy III,
and a third braking strategy is to adopt a combined braking mode of air braking, eddy current braking and mechanical braking.
8. A combined braking method according to claim 7, characterised in that: and in the sixth step, a combined braking mode of air braking and eddy current braking is adopted, and when the condition that the running speed of the transport means is lower than the mechanical braking starting speed threshold value is monitored, mechanical braking is increased.
9. A combined braking method according to claim 7, characterised in that: the air-feeding brake and the air brake are started simultaneously in the first brake strategy, the air brake and the eddy current brake are started simultaneously in the second brake strategy, and the air brake and the eddy current brake are started simultaneously in the third brake strategy.
10. A combined braking method according to claim 7, characterised in that: the air brake in the first, second and third brake strategies is realized through an air brake device, the air brake device comprises a plurality of spoilers and spoiler unfolding and locking structures, the spoilers are installed on the transportation tool through the spoiler unfolding and locking structures, the spoilers cling to the outer side of the transportation tool under the action of the spoiler unfolding and locking structures when the transportation tool is in normal operation, and the spoilers are unfolded under the action of the spoiler unfolding and locking structures during air brake.
11. A combined braking method according to claim 7, characterised in that: eddy current brake in braking strategy two, the third realize through eddy current arresting gear, eddy current arresting gear include tablet, permanent magnet array and permanent magnet motion, the tablet is arranged at transport means orbit's track face middle part, the permanent magnet array passes through the permanent magnet motion and installs in transport means middle part below, when transport means normal operating, the permanent magnet array hugs closely in transport means middle part below under the permanent magnet motion effect, the permanent magnet array moves suitable position under the permanent magnet motion effect during eddy current brake, produces eddy current brake force with the tablet effect.
12. A combined braking method according to claim 11, characterised in that: mechanical braking in braking tactics three realize through mechanical braking device, mechanical braking device include road bed slide rail, automobile body slide rail and automobile body slide rail motion, the road bed slide rail is arranged in the tablet outside, the orbit is inboard, the automobile body slide rail is arranged in the transport means bottom, realize the motion of automobile body slide rail vertical direction through automobile body slide rail motion, the transport means normal operating, the automobile body slide rail rises under the effect of automobile body slide rail motion, when mechanical braking, the automobile body slide rail is put down under the effect of automobile body slide rail motion, produce the brake force with road bed slide rail friction.
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| CN110758451A (en) * | 2019-11-29 | 2020-02-07 | 北京天权恒科技有限公司 | Braking method for rail vehicle |
| CN111305004A (en) * | 2020-02-24 | 2020-06-19 | 三一汽车制造有限公司 | Traveling machine, and travel brake system and travel brake method for traveling machine |
| CN112644290B (en) * | 2020-12-29 | 2021-09-21 | 王延平 | Synchronous braking control method and system for each carriage of train |
| CN112977382A (en) * | 2021-03-22 | 2021-06-18 | 中联重科股份有限公司 | Braking control method for construction vehicle and braking control device for construction vehicle |
| CN113911164A (en) * | 2021-11-19 | 2022-01-11 | 中车长春轨道客车股份有限公司 | Brake control method and device for high-speed superconducting electromagnetic levitation train and train |
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| CN101624054B (en) * | 2009-08-06 | 2011-03-02 | 上海磁浮交通发展有限公司 | Travel structure of magnetic levitation type rail polling car |
| CN102287460B (en) * | 2011-07-01 | 2013-05-08 | 江苏大学 | Magnetic brake and friction brake combined mixed brake and operating mode switching method thereof |
| KR101396199B1 (en) * | 2012-07-13 | 2014-05-19 | 한국철도기술연구원 | Method and system for braking a railway vehicle |
| CN104786850B (en) * | 2015-02-13 | 2017-06-27 | 郑州宇通客车股份有限公司 | A kind of composite braking system and its braking control system and brake control method |
| CN105292092B (en) * | 2015-10-09 | 2017-12-19 | 吉林大学 | Commercial car integrated brake system divided working status braking force distribution optimization method |
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