WO2018054105A1

WO2018054105A1 - Buckled beam-based bi-stable state electromagnetic steering engine and control method

Info

Publication number: WO2018054105A1
Application number: PCT/CN2017/089230
Authority: WO
Inventors: 徐明龙; 敬子建
Original assignee: 西安交通大学
Priority date: 2016-09-26
Filing date: 2017-06-20
Publication date: 2018-03-29
Also published as: CN106394873A; CN106394873B

Abstract

A buckled beam-based bi-stable state electromagnetic steering engine and a control method. The steering engine comprises an electromagnetic driving device, a buckled beam control device, and a rudder which is connected to the buckled beam control device; the electromagnetic driving device comprises a first iron core, a first coil which is wound on the first iron core, a second iron core, a second coil which is wound on the second iron core, and first and second armatures which are located at two ends between the first and second iron cores and provided in parallel; the buckled beam control device comprises a first buckled beam and a second buckled beam which is provided parallel to the first buckled beam; control ends and tail parts of the first and second buckled beams are mounted on a fixing device by means of rotary shafts; grooves which are used for mounting the first and second armatures are formed in the middle parts of the first and second buckled beams. Also disclosed is a control method for the steering engine. According to the present invention, quick response and bidirectional load driving can be implemented under a high-frequency driving condition, and a function of clamping outage is provided, so that position holding is realized after outage and bidirectional wide-angle control is realized.

Description

Bistable beam based bistable electromagnetic steering gear and control method thereof

Technical field

The invention belongs to the technical field of steering gears, and particularly relates to a bistable electromagnetic steering gear and a control method based on a buckling beam.

Background technique

In recent years, with the rapid development of the aerospace industry, people have higher and higher requirements on the performance of the steering gear. The steering gear has gradually developed toward a compact structure, small size and light weight. The hydraulic and pneumatically driven steering gear control mechanism often has the disadvantages of complicated structure, high quality and large volume. The traditional electric steering gear requires an acceleration and deceleration device, which is complicated in equipment and high in quality.

Summary of the invention

In order to solve the above problems in the prior art, an object of the present invention is to provide a bistable electromagnetic steering gear and a control method based on a buckling beam, which can quickly respond and bidirectionally drive a load under high frequency driving conditions, and provide a break. The function of the electric clamp; the position can be maintained after the power is turned off and the two-way large angle control is realized.

In order to achieve the above object, the present invention adopts the following technical solutions:

A bistable electromagnetic steering gear based on a buckling beam, comprising an electromagnetic driving device 1, a buckling beam control device 2, a first rudder blade 3 and a second rudder blade 4 connected to the buckling beam control device 2, the electromagnetic drive The device 1 and the buckling beam control device 2 are mounted in the outer casing 5; the electromagnetic drive device 1 includes a first core 1-2, a first coil 1-1 wound on the first core 1-2, and a second iron a core 1-4, a second coil 1-5 wound on the second core 1-4, and a first side placed side by side between the first core 1-2 and the second core 1-4 Armature 1-3 And the second armature 1-6; the flexure beam control device 2 includes a first flexure beam 2-1 and a second flexure beam 2-2 placed side by side, the first flexure beam 2-1 and the second flexure beam 2-2 The control end is mounted on the end fixing device 2-3 through the rotating shaft, and the first flexing beam 2-1 and the second flexing beam 2-2 tail are mounted to the tail fixing device 2-4 through the rotating shaft; the first flexing beam 2-1 and the first The middle of the second buckling beam 2-2 has a groove for mounting the first armature 1-3 and the second armature 1-6; the installed buckling beam control device 2 is located in the middle of the electromagnetic drive device 1, and the buckling beam control device 2 and the electromagnetic The drive devices 1 are perpendicular to each other.

The first coil 1-1 and the second coil 1-5 are wound in the same manner. The first armature 1-3 and the second armature 1-6 are made of permanent magnets of the same polarity, and the orientations of the N pole and the S pole are the same.

The control method of the buckling beam-based bistable electromagnetic steering gear, firstly, to the first buckling beam 2-1 and the second buckling beam 2 by the end fixing device 2-3 and the tail fixing device 2-4 during installation -2 applies an axial pre-stress to make it in a buckling state; when starting to act, energizes the first coil 1-1 and the second coil 1-5, and generates a magnetic field pair after being energized to be fixed to the first flexure beam 2-1, respectively. And the first armature 1-3 and the second armature 1-6 in the second flexure beam 2-2 generate opposite directions of force, thereby achieving switching of the unstable buckling state.

Compared with the prior art, the present invention has the following advantages:

1) Since the buckling state is a steady state, the current state can be maintained without applying external force, and the buckling beam has two buckling states in opposite directions after buckling, so the steering gear can control the opposite direction of output of each rudder blade. Two deflection angles. Therefore, the present invention only needs to be energized when switching the two deflection angles when controlling the deflection of the rudder blade, and does not need to be energized when the rudder blade maintains the current state and continuously outputs the deflection angle. Not only the position is maintained after power failure, but also has the characteristics of low energy consumption.

2) The present invention uses only two buckling beams as the rudder blade control mechanism, so the mechanism is simple, and it is easy to realize a small-volume and lightweight design. Not only does it greatly reduce the difficulty of machining and assembly, but it also saves valuable interior space for small aircraft.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

2 is a three-dimensional view of the electromagnetic drive device and the buckling beam control device of the present invention.

3 is a schematic view of an electromagnetic driving device of the present invention.

4 is a schematic view of a buckling beam control device of the present invention.

Figure 5 is a schematic view showing the buckling state of the buckling beam of the present invention after assembly.

Figure 6 is a schematic view of the coil winding method and the armature orientation.

detailed description

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

As shown in FIG. 1, FIG. 2, FIG. 3 and FIG. 4, a buckling beam-based bistable electromagnetic steering gear, an electromagnetic driving device 1, a buckling beam control device 2, and a buckling beam control device 2 are connected. a first rudder piece 3 and a second rudder piece 4, the electromagnetic driving device 1 and the buckling beam control device 2 are mounted in the outer casing 5; the electromagnetic driving device 1 includes a first core 1-2 wound around the first iron a first coil 1-1 on the core 1-2, a second core 1-4, a second coil 1-5 wound on the second core 1-4, and a first core 1-2 and a first armature 1-3 and a second armature 1-6 placed side by side at both ends between the two cores 1-4; the buckling beam control device 2 includes a first flexure beam 2-1 and a second buckling placed side by side The beam 2-2, the first flexure beam 2-1 and the second flexure beam 2-2 control end are mounted to the end fixture 2-3 via the rotating shaft, the first flexure beam 2-1 and the second flexure beam 2-2 tail Installed on the tail fixing device 2-4 through the rotating shaft; the first flexing beam 2-1 and the second flexing beam 2-2 are used to install the first title The grooves of the iron 1-3 and the second armature 1-6; the installed buckling beam control device 2 is located in the middle of the electromagnetic drive device 1, and the buckling beam control device 2 and the electromagnetic drive device 1 are perpendicular to each other.

The control method of the buckling beam-based bistable electromagnetic steering gear according to the present invention firstly, when installed, the first buckling beam 2-1 and the second buckling by the end fixing device 2-3 and the tail fixing device 2-4 The beam 2-2 applies an axial pre-stress to be in a buckling state or a buckling state two (as shown in Fig. 5, a three-dimensional transfer schematic is shown in Fig. 2); when starting to act, the first coil 1-1 And the second coil 1-5 is energized, and the magnetic field generated after energization is opposite to the first armature 1-3 and the second armature 1-6 fixed in the first flexure beam 2-1 and the second flexure beam 2-2, respectively. The force to achieve the switching of the unstable buckling state.

As a preferred embodiment of the present invention, the first coil 1-1 and the second coil 1-5 are wound in the same manner, and the first armature 1-3 and the second armature 1-6 are made of permanent magnets of the same polarity, and the N poles are The S poles have the same orientation, and when the start of the operation, the first coil 1-1 and the second coil 1-5 are energized, and after the energization, a magnetic field is generated to generate opposite directions for the first armature 1-3 and the second armature 1-6. The force is used to achieve the switching of the unstable buckling state and the differential control of the two rudder blades.

Claims

A buckling beam-based bistable electromagnetic steering gear, comprising: an electromagnetic driving device (1), a buckling beam control device (2), and a first rudder blade connected to the buckling beam control device (2) (3) And a second rudder blade (4), the electromagnetic drive device (1) and the buckling beam control device (2) are mounted in the outer casing (5); the electromagnetic drive device (1) comprises a first iron core (1) 2) a first coil (1-1) wound on the first core (1-2), a second core (1-4), and a second wound on the second core (1-4) a coil (1-5), and a first armature (1-3) and a second armature (1) placed side by side at both ends between the first core (1-2) and the second core (1-4) -6); the buckling beam control device (2) comprises a first flexure beam (2-1) and a second flexure beam (2-2) placed side by side, a first flexure beam (2-1) and a second buckling The control end of the beam (2-2) is mounted to the end fixing device (2-3) through the rotating shaft, and the tail portions of the first flexing beam (2-1) and the second flexing beam (2-2) are attached to the tail fixing device through the rotating shaft ( 2-4); a groove for mounting the first armature (1-3) and the second armature (1-6) in the middle of the first flexure beam (2-1) and the second flexure beam (2-2); Buckling beam control The device (2) is located in the middle of the electromagnetic driving device (1), and the buckling beam control device (2) and the electromagnetic driving device (1) are perpendicular to each other; when installed, through the end fixing device (2-3) and the tail fixing device (2) -4) An axial preload is applied to the first flexure beam (2-1) and the second flexure beam (2-2) to be in a buckling state.
A buckling beam-based bistable electromagnetic steering gear according to claim 1, wherein said first coil (1-1) and said second coil (1-5) are wound in the same manner, and said first armature (1-3) and the second armature (1-6) use permanent magnets of the same polarity, and the orientations of the N pole and the S pole are the same.
A method of controlling a buckling beam-based bistable electromagnetic steering gear according to claim 1, wherein: first, when installed, the first end fixing device (2-3) and the tail fixing device (2-4) are first The buckling beam (2-1) and the second buckling beam (2-2) apply an axial preload to the buckling state; when starting to act, the first coil (1-1) and the second coil (1- 5) Power-on, the magnetic field generated after power-on is fixed at the first The first armature (1-3) and the second armature (1-6) in the flexure beam (2-1) and the second flexure beam (2-2) generate opposite directions of force, thereby achieving an unstable buckling state. Switch.