Unbalance force test adjusting device and method of operating device under unidirectional acceleration

Abstract

The invention belongs to the technical field of mechanical control system design, and particularly relates to an unbalanced force test adjusting device and method of a control device under one-way acceleration, the device comprises a displacement sensor, a load mechanism, a balancing weight, a test bed and a force sensor, and the control device comprises the load mechanism, a control rod and a connecting rod. One end of the loading mechanism is installed on the test bench, the other end of the loading mechanism is connected with the control rod, the balancing weight is connected with the control rod through a connecting rod, the control rod is provided with a test control point and a force sensor, and the unbalanced force of the control system can be conveniently tested and adjusted through the ground tool bench and the external force sensor.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical control system design, and specifically relates to an invention titled: an unbalanced force testing and adjusting device and method for a control device under unidirectional acceleration. Background Art

[0002] The support rocker arm assembly and the tie rod are important components of the aircraft control system, and the rocker arm and the tie rod are the moving parts in the system. In the pilot control system of the fly-by-wire aircraft, if the unbalanced force of the pilot control subsystem under a certain unidirectional acceleration is to be measured and adjusted, the current means are to install the whole system on the acceleration test bench and then conduct the acceleration test. However, for the pilot control device with many transmission nodes, the transmission chain from the output end active arm to the end driven arm is long and has a wide distribution range. It is costly and risky to clamp the whole system on the acceleration bench. In addition, it is difficult to conduct the whole system test due to the size limitation of the acceleration test bench. In addition, when conducting the test on the acceleration bench, it is difficult to adjust the unbalanced force of the system. Summary of the invention

[0003] Purpose of the present invention:

[0004] In order to verify whether the quality characteristic estimation of the system under a unidirectional acceleration in the theoretical stage is accurate, the present invention provides an invention name: an unbalanced force testing and adjustment device and method for a control device under a unidirectional acceleration, which can conveniently test and adjust the unbalanced force of the control system through a ground tooling stand and an external force sensor.

[0005] The technical solution of the present invention:

[0006] The unbalanced force test and adjustment device of the operating device under unidirectional acceleration includes a displacement sensor 1, a load mechanism 2, a counterweight 3, a test bench 5, and a force sensor 6. The operating device includes the load mechanism 2, a steering rod, and a connecting rod. One end of the load mechanism 2 is installed on the test bench 5, and the other end is connected to the steering rod. The counterweight 3 is connected to the steering rod through a connecting rod. A test operating point and a force sensor 6 are set on the steering rod.

[0007] Furthermore, the bottom surface of the test bench 5 is a horizontal installation surface, and the side surface is a vertical installation surface.

[0008] The unbalanced force test and adjustment method of the control device under unidirectional acceleration is performed using the device, and comprises the following steps:

[0009] Step 1: Place the test bench 5 on the ground with its horizontal mounting surface facing downward, and install the control device to be tested on the test bench 5. During the installation process, use the load mechanism to support the steering rod and the connecting rod and keep them in a neutral position. After the installation is completed, remove the load mechanism 2 in the control device;

[0010] Step 2: Place the test bench 5 on the ground with its vertical mounting surface facing downward, and preliminarily adjust the weight of the counterweight block so that the weight of the counterweight block and the equivalent weight of the control device are preliminarily balanced in the unidirectional acceleration direction. The basis for the preliminary balance is that the unbalanced force of the control device is less than the friction force of the control device, and the control device achieves a preliminary balance at a neutral position;

[0011] Step 3: flexibly connect the force sensor 6 to the test control point of the control rod of the control device to ensure that the deadweight of the force sensor does not affect the measurement effect, push the control rod from front to back in the acceleration direction through the force sensor, and record the value F1 of the force sensor; push the control rod from back to front in the acceleration direction through the force sensor, and record the value F2 of the force sensor, and calculate the value A of |F1-F2|;

[0012] Step 4: Based on the weight of the counterweight block in step 3, the counterweight weight of the counterweight block is increased according to the minimum step difference;

[0013] Step 5: Repeat step 3 to obtain the value F1 of the force sensor when the joystick is pushed from front to back in the acceleration direction, and the value F2 of the force sensor when the joystick is pushed from back to front in the acceleration direction, and calculate the value B of |F1-F2|;

[0014] Step 6: Based on the weight of the counterweight block in step 3, the counterweight weight of the counterweight block is reduced according to the minimum differential;

[0015] Step 7: Repeat step 3 to obtain the value F1 of the force sensor when the joystick is pushed from front to back in the acceleration direction, and the value F2 of the force sensor when the joystick is pushed from back to front in the acceleration direction, and calculate the value C of |F1-F2|;

[0016] Step 8: Determine the values ​​of A, B, and C, and determine the weight of the counterweight that can achieve mass balance of the control device.

[0017] Furthermore, the unbalanced force of the operating device refers to: the unbalanced force generated in the acceleration direction by the weight difference at both ends of the connecting rod with the middle hinge point.

[0018] Furthermore, the friction force of the operating device refers to the friction force caused by the installation or contact of the rotating joints.

[0019] Furthermore, in step 8, when the value A is the smallest, it can be considered that the unbalanced force adjustment of the control device under unidirectional acceleration is completed, and the weight of the counterweight block corresponding to step 3 can achieve the mass balance of the control device.

[0020] Further, in step 8, when the value B is the smallest, the weight of the counterweight block adjusted in step 4 is used as a reference, and the counterweight weight of the counterweight block is gradually increased according to the minimum step difference and step 3 is repeated each time the counterweight weight is adjusted. After each adjustment of the counterweight block, a value of |F1-F2| is obtained. When |F1-F2| is the smallest, it can be regarded as completing the unbalanced force adjustment of the control device under unidirectional acceleration. At this time, the weight of the counterweight block can achieve mass balance of the control device.

[0021] Further, in step 8, when the value C is the smallest, the weight of the counterweight block adjusted in step 6 is used as a reference, and the counterweight weight of the counterweight block is gradually reduced according to the minimum step difference and step 3 is repeated each time the counterweight weight is adjusted. After each adjustment of the counterweight block, a value of |F1-F2| is obtained. When |F1-F2| is the smallest, it can be regarded as completing the unbalanced force adjustment of the control device under unidirectional acceleration. At this time, the weight of the counterweight block can achieve mass balance of the control device.

[0022] Beneficial effects of the present invention:

[0023] The present invention provides an unbalanced force test and adjustment device and method for a control device under unidirectional acceleration. Through the double-sided installation of a test bench and the use of force / displacement sensors, combined with the rational use of the earth's gravitational acceleration, the dependence and limitation of a large control system on an acceleration test bench when performing unbalanced force tests and adjustments can be effectively avoided. The unbalanced force of a control system with a large size and a dispersed layout can be tested and adjusted in a relatively static and safe ground test environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an implementation diagram of the unbalanced force test and adjustment method of the control device under unidirectional acceleration and the unbalanced force test and adjustment method of the control device under unidirectional acceleration of the present invention;

[0025] Reference numerals: 1. joystick; 2. load mechanism; 3. counterweight; 4. connecting rod; 5. test bench; 6. force sensor. DETAILED DESCRIPTION

[0026] like Figure 1As shown, the present invention proposes an unbalanced force test and adjustment device for a control device under unidirectional acceleration, which uses a set of test benches that can be safely placed on horizontal and vertical mounting surfaces, uses the 1G gravity acceleration of the earth to simulate unidirectional acceleration, and uses a force sensor to test the unbalanced force of the system. When the horizontal mounting surface of the bench is mounted facing the ground, it is mainly used to install and adjust the driver's control device of the object to be tested on the bench, and when the vertical mounting surface of the bench is facing the ground, it is used to measure and adjust the unbalanced force of the driver's control device that needs to achieve mass balance.

[0027] The unbalanced force test and adjustment device of the operating device under unidirectional acceleration of the present invention comprises a displacement sensor 1, a load mechanism 2, a counterweight 3; a test bench 5, and a force sensor 6. The operating device comprises a load mechanism 2, a steering rod, and a connecting rod. One end of the load mechanism 2 is installed on the test bench 5, and the other end is connected to the steering rod. The counterweight 3 is connected to the steering rod through a connecting rod. A test operating point and a force sensor 6 are set on the steering rod. The bottom surface of the test bench 5 is a horizontal installation surface, and the side surface is a vertical installation surface.

[0028] The unbalanced force test and adjustment method of the control device under unidirectional acceleration is performed using the device, and comprises the following steps:

[0029] Step 1: Place the test bench 5 on the ground with its horizontal mounting surface facing downward, and install the control device to be tested on the test bench 5. During the installation process, use the load mechanism to support the steering rod and the connecting rod and keep them in a neutral position. After the installation is completed, remove the load mechanism 2 in the control device;

[0030] Step 2: Place the test bench 5 on the ground with its vertical mounting surface facing downward, and preliminarily adjust the weight of the counterweight block so that the weight of the counterweight block and the equivalent weight of the operating device are preliminarily balanced in the direction of unidirectional acceleration. The basis for the preliminary balance is that the unbalanced force of the operating device is less than the friction force of the operating device, and the operating device achieves a preliminary balance in the neutral position.

[0031] The unbalanced force of the operating device refers to: the unbalanced force generated in the acceleration direction by the weight difference at both ends of the connecting rod with an intermediate hinge; the friction force of the operating device refers to the friction force caused by the installation or contact of the rotating pair at each rotating hinge.

[0032] Step 3: flexibly connect the force sensor 6 to the test control point of the control stick of the control device to ensure that the deadweight of the force sensor will not affect the measurement effect. Push the control stick from front to back in the acceleration direction through the force sensor and record the value F1 of the force sensor. Push the control stick from back to front in the acceleration direction through the force sensor and record the value F2 of the force sensor. Calculate the value A of |F1-F2|.

[0033] Step 4: Based on the weight of the counterweight block in step 3, the counterweight weight of the counterweight block is increased according to the minimum step difference;

[0034] Step 5: Repeat step 3 to obtain the value F1 of the force sensor when the joystick is pushed from front to back in the acceleration direction, and the value F2 of the force sensor when the joystick is pushed from back to front in the acceleration direction, and calculate the value B of |F1-F2|;

[0035] Step 6: Based on the weight of the counterweight block in step 3, the counterweight weight of the counterweight block is reduced according to the minimum differential;

[0036] Step 7: Repeat step 3 to obtain the value F1 of the force sensor when the joystick is pushed from front to back in the acceleration direction, and the value F2 of the force sensor when the joystick is pushed from back to front in the acceleration direction, and calculate the value C of |F1-F2|;

[0037] Step 8: Determine the values ​​of A, B, and C

[0038] When the value A is the smallest, it can be considered that the unbalanced force adjustment of the control device under unidirectional acceleration is completed, and the weight of the counterweight block corresponding to step 3 can achieve the mass balance of the control device;

[0039] When the value B is the smallest, take the weight of the counterweight block adjusted in step 4 as the basis, increase the counterweight weight of the counterweight block step by step according to the minimum step difference and repeat step 3 each time the counterweight weight is adjusted. After each adjustment of the counterweight block, a value of |F1-F2| is obtained. When |F1-F2| is the smallest, it can be regarded as completing the unbalanced force adjustment of the control device under unidirectional acceleration. At this time, the weight of the counterweight block can achieve mass balance of the control device.

[0040] When the value C is the smallest, the weight of the counterweight block adjusted in step 6 is used as a reference, and the counterweight weight of the counterweight block is gradually reduced according to the minimum step difference. After each adjustment of the counterweight weight, step 3 is repeated. After each adjustment of the counterweight block, a value of |F1-F2| is obtained. When |F1-F2| is the smallest, it can be regarded as completing the unbalanced force adjustment of the control device under unidirectional acceleration. At this time, the weight of the counterweight block can achieve mass balance of the control device.

[0041] The present invention effectively avoids the reliance and limitation of large-scale control systems on acceleration test benches when conducting unbalanced force tests and adjustments through the double-sided installation of the test bench and the use of force / displacement sensors, combined with the rational use of the earth's gravitational acceleration, and can test and adjust the unbalanced forces of control systems with large sizes and dispersed layouts in a relatively static and safe ground test environment.

Claims

1. An unbalanced force test and adjustment device for a control device under unidirectional acceleration, characterized in that: It includes a displacement sensor, a load mechanism, a counterweight; a test bench, a force sensor, and an operating device including a load mechanism, a steering rod, and a connecting rod. One end of the load mechanism is installed on the test bench, and the other end is connected to the steering rod. The counterweight is connected to the steering rod through a connecting rod. A test operating point and a force sensor are set on the steering rod.

2. The unbalanced force test and adjustment device of the operating device under unidirectional acceleration according to claim 1, characterized in that: The bottom surface of the test bench is a horizontal installation surface, and the side surface is a vertical installation surface.

3. A method for testing and adjusting the unbalanced force of a control device under unidirectional acceleration, performed using the device as claimed in claim 2, characterized in that: The following steps are involved: Step 1: Place the test bench with the horizontal mounting surface facing downward on the ground, and install the control device to be tested on the test bench. During the installation process, use the load mechanism to support the steering column and the connecting rod and keep them in the neutral position. After the installation is completed, remove the load mechanism in the control device; Step 2: Place the test bench with the vertical mounting surface facing downward on the ground, and preliminarily adjust the weight of the counterweight block so that the weight of the counterweight block and the equivalent weight of the control device are preliminarily balanced in the direction of unidirectional acceleration. The basis for the preliminary balance is that the unbalanced force of the control device is less than the friction force of the control device, and the control device achieves a preliminary balance at the neutral position; Step 3: Flexibly connect the force sensor to the test control point of the joystick of the control device to ensure that the deadweight of the force sensor does not affect the measurement effect. Push the joystick from front to back in the acceleration direction through the force sensor and record the value F1 of the force sensor. Push the joystick from back to front in the acceleration direction through the force sensor and record the value F2 of the force sensor. Calculate the value A of |F1-F2|. Step 4: Based on the weight of the counterweight block in step 3, the counterweight weight of the counterweight block is increased according to the minimum step difference; Step 5: Repeat step 3 to obtain the value F1 of the force sensor when the joystick is pushed from front to back in the acceleration direction, and the value F2 of the force sensor when the joystick is pushed from back to front in the acceleration direction, and calculate the value B of |F1-F2|; Step 6: Based on the weight of the counterweight block in step 3, the counterweight weight of the counterweight block is reduced according to the minimum differential; Step 7: Repeat step 3 to obtain the value F1 of the force sensor when the joystick is pushed from front to back in the acceleration direction, and the value F2 of the force sensor when the joystick is pushed from back to front in the acceleration direction, and calculate the value C of |F1-F2|; Step 8: Determine the values ​​of A, B, and C, and determine the weight of the counterweight that can achieve mass balance of the control device.

4. The unbalanced force test and adjustment method of the operating device under unidirectional acceleration according to claim 3, characterized in that: The unbalanced force of the operating device refers to the unbalanced force generated in the direction of acceleration by the weight difference at both ends of the connecting rod with an intermediate hinge.

5. The unbalanced force test and adjustment method of the operating device under unidirectional acceleration according to claim 3, characterized in that: The friction force of the operating device refers to the friction force caused by the installation or contact of the rotating joint at each rotating joint.

6. The unbalanced force test and adjustment method of the operating device under unidirectional acceleration according to claim 3, characterized in that: In step 8, when the value A is the smallest, it can be considered that the unbalanced force adjustment of the control device under unidirectional acceleration is completed, and the weight of the counterweight block corresponding to step 3 can achieve the mass balance of the control device.

7. The unbalanced force test and adjustment method of the operating device under unidirectional acceleration according to claim 6, characterized in that: In step 8, when the value B is the smallest, the weight of the counterweight block adjusted in step 4 is used as a reference, and the counterweight weight of the counterweight block is gradually increased according to the minimum step difference. After each adjustment of the counterweight weight, step 3 is repeated. After each adjustment of the counterweight block, a value of |F1-F2| is obtained. When |F1-F2| is the smallest, it can be regarded as completing the unbalanced force adjustment of the control device under unidirectional acceleration. At this time, the weight of the counterweight block can achieve mass balance of the control device.

8. The unbalanced force test and adjustment method of the operating device under unidirectional acceleration according to claim 7, characterized in that: In step 8, when the value C is the smallest, the weight of the counterweight block adjusted in step 6 is used as a reference, and the counterweight weight of the counterweight block is gradually reduced according to the minimum step difference. After each adjustment of the counterweight weight, step 3 is repeated. After each adjustment of the counterweight block, a value of |F1-F2| is obtained. When |F1-F2| is the smallest, it can be regarded as completing the unbalanced force adjustment of the control device under unidirectional acceleration. At this time, the weight of the counterweight block can achieve mass balance of the control device.

Images