Pedal force displacement automatic adjusting circuit, device and method

Abstract

The invention provides a pedal force displacement automatic adjusting circuit which comprises a processor chip and a motor control chip used for controlling a motor, and the motor control chip is connected with the processor chip; the analog-to-digital conversion chip is connected with the processor chip; the invention further provides an automatic pedal force displacement adjusting device and method. The device comprises a support; a motor; the bracket is arranged on the bracket; the driving wheel is connected with the motor, and the motor can drive the driving wheel; the driven wheel is meshed with the driving wheel, and the driven wheel can rotate along with the driving wheel; the bushing is provided with a threaded hole, and the bushing is fixedly arranged on the driven wheel; the large lead screw is mounted in the threaded hole; the switching assembly is connected with one end of the large lead screw; a displacement sensor is arranged on the switching assembly; the force sensor is arranged between the switching assembly and the hook; and the hook is connected with the switching assembly, and the hook can be hung on the pedal.

Description

Technical Field

[0001] The present application belongs to the field of aviation assembly technology, and in particular relates to a pedal force displacement automatic adjustment circuit, device and method. Background Art

[0002] After the pedal force displacement assembly is completed, it is necessary to measure the pilot's actual control force and control displacement. The original pedal force displacement mainly adopts the coordinated cooperation of 4 people, among which 1 person operates in the maintenance cover in front of the cockpit floor, and the other three people squeeze in a driving seat in the cockpit to operate. Among the 3 people squeezed in the driving seat, 2 people pedal the push-pull dynamometer, and 1 person holds the push-pull dynamometer by hand.

[0003] When measuring pedal force, two people in the cockpit pedal, and the personnel coming out of the maintenance cover in front of the cockpit continuously read the pedal displacement value. When the displacement value reaches the theoretical value, an instruction to stop pedaling is issued. At this time, the two people who are pedaling the pedal immediately stabilize the pedal state and force value, and the personnel holding the pedal must quickly read the corresponding pedal force value. This measurement method has problems such as low measurement accuracy, delayed measurement stop instruction, and the need for many personnel. Summary of the invention

[0004] Purpose of the invention: The present invention proposes a pedal force displacement automatic detection circuit, device and method, which can reduce the number of pedal force displacement measurement personnel by 3, and does not require communication between personnel during measurement, reducing the influence of control command transmission execution lag on measurement accuracy. At the same time, the present invention optimizes the original manual stable pedal force into the friction force on the threaded screw, which reduces the measurement error caused by the uncertainty of the force. At the same time, the device is light in weight, easy to disassemble, and easy to use in various working conditions such as production and manufacturing and after-sales troubleshooting.

[0005] In a first aspect, the present application provides a pedal force displacement automatic adjustment circuit, the circuit comprising:

[0006] Processor chip,

[0007] A motor control chip, used for controlling the motor, the motor control chip being connected to the processor chip;

[0008] The analog-to-digital conversion chip is connected to the processor chip; wherein the force sensor is connected to the motor control chip and the analog-to-digital conversion chip; and the displacement sensor is connected to the motor control chip and the analog-to-digital conversion chip.

[0009] In a second aspect, the present application also provides a pedal force displacement automatic adjustment device, the device comprising:

[0010] Bracket;

[0011] A motor is arranged on the bracket;

[0012] A driving wheel connected to the motor, wherein the motor is capable of driving the driving wheel;

[0013] A driven wheel meshed with the driving wheel, the driven wheel being capable of rotating along with the driving wheel;

[0014] A bushing having a threaded hole, wherein the bushing is fixedly arranged on the driven wheel;

[0015] A large lead screw is installed in the threaded hole;

[0016] A transfer assembly connected to one end of the large lead screw; a displacement sensor is provided on the transfer assembly;

[0017] A force sensor is arranged between the adapter assembly and the hook;

[0018] A hook is connected to the adapter assembly, and the hook can be hung on the pedal.

[0019] Preferably, the device further comprises:

[0020] A motor bracket is arranged on the bracket, and the motor bracket is used to install the motor.

[0021] Preferably, the adapter assembly comprises:

[0022] A bearing packaging shell is rotatably connected to one end of the large lead screw;

[0023] A small bearing is arranged in the bearing packaging shell, and the inner ring of the small bearing is connected to one end of the large lead screw;

[0024] A mounting seat is connected to the bearing packaging shell, and the mounting seat is used to mount the displacement sensor.

[0025] Preferably, the adapter assembly further includes:

[0026] A connecting rod is arranged between the mounting seat and the bearing packaging shell; wherein the force sensor is arranged between the connecting rod and the hook.

[0027] Preferably, the device further comprises:

[0028] A small lead screw is arranged on the bracket, and the small lead screw is used to adjust the position of the hook.

[0029] Preferably, the hook comprises:

[0030] A straight rod, one end of which is connected to the force sensor;

[0031] The bent portion is connected to the other end of the straight rod.

[0032] Preferably, the bent portion is used to hook the pedal, and an opening is provided on the bent portion.

[0033] In a third aspect, the present application also provides a method for automatically adjusting pedal force displacement, the method comprising:

[0034] The bracket is placed on the profile on the aircraft to complete the connection between the device and the aircraft structure;

[0035] The large lead screw is manually rotated by using an external tool to make the hook contact with the pedal on the foot control mechanism, or the motor is operated in an inching mode to rotate until the hook contacts with the pedal on the foot control mechanism;

[0036] Start the pedal force displacement automatic detection program, the motor rotates under the control of the program, and when the pedal reaches the set displacement or the set pedal force, the motor stops rotating;

[0037] The pedal force or pedal displacement data is read through the display and recorded.

[0038] Beneficial technical effects of this application:

[0039] The present invention provides a pedal force displacement automatic adjustment device and method; through creative design, the original technology that requires four people to cooperate in measurement, and the pedal force and pedal displacement information is transmitted in real time by sound during the measurement process, with low measurement accuracy, low measurement efficiency, and a long measurement cycle is improved to a device that only requires one person to operate, and no communication is required during the operation, thereby improving the measurement efficiency and accuracy, shortening the detection cycle, and realizing automatic adjustment of the pedal force and displacement through program control. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is an assembly appearance diagram of the pedal force displacement automatic detection device provided in an embodiment of the present application;

[0041] Figure 2 is a meshing diagram of the gear part of the pedal force displacement automatic detection device provided in an embodiment of the present application;

[0042] Figure 3 1. It is a schematic diagram of the internal packaging of the bearing packaging shell of the pedal force displacement automatic detection device;

[0043] Figure 4 It is a circuit diagram for automatic detection of pedal force displacement provided in an embodiment of the present application;

[0044] Among them, the hook 1, the displacement sensor 2, the mounting seat 3, the force sensor 4, the connecting rod 5, the bearing packaging shell 6, the motor 7, the bracket 8, the motor bracket 9, the bearing bracket 10, the small screw 11, the large screw 12, the driving wheel 13, the driven wheel 14, the bushing 15, the small bearing 16, and the large bearing 17; the first resistor 18, the second resistor 19, the third resistor 20, the fourth resistor 21, the first capacitor 22, the first transistor 23, the switch 24, the power supply 25, the fifth resistor 26, the first voltage regulator diode 27, the sixth resistor 28, the second voltage regulator diode 29, the processor chip 30, the motor control chip 31, the seventh resistor 32, the eighth resistor 33, the second capacitor 34, the ninth resistor 35, the tenth resistor 36, the analog-to-digital conversion chip 37, the third capacitor 38, the second transistor 39, the fourth capacitor 40, the third transistor 41, the fifth capacitor 42, the fourth transistor 43, and the eleventh resistor 44. DETAILED DESCRIPTION

[0045] The present invention proposes an automatic pedal force displacement adjustment device and an operation method. The device and method can reduce the number of pedal force displacement measurement personnel by 3, and do not require communication between personnel during measurement, thereby reducing the influence of the control command transmission execution lag on the measurement accuracy. At the same time, the present invention optimizes the original manual stable pedal force into the friction force on the threaded screw, thereby reducing the measurement error caused by the uncertainty of the force. At the same time, the device is light in weight, easy to disassemble, and convenient to use in various working conditions such as production and manufacturing and after-sales troubleshooting.

[0046] like Figure 1 , Figure 2 As shown, a schematic diagram of an automatic detection device for pedal force displacement is provided, which structure includes a hook 1, a displacement sensor 2, a mounting seat 3, a force sensor 4, a connecting rod 5, a bearing packaging shell 6, a motor 7, a bracket 8, a motor bracket 9, a bearing bracket 10, a small lead screw 11, a large lead screw 12, a driving wheel 13, a driven wheel 14, a bushing 15, a small bearing 16, and a large bearing 17.

[0047] Among them, one end of the hook 1 is in contact with the pedal, and the other end is screwed to the force sensor 4 through a thread, and the middle part is connected to the mounting seat 3 through a "mouth"-shaped interface; the bottom of the displacement sensor 2 is screwed to the mounting seat 3 for measuring the relative displacement of the pedal; the mounting seat 3 is screwed to the displacement sensor 2 at the upper part, and the lower part is connected to the middle part of the hook 1 through a "mouth"-shaped interface; one end of the force sensor 4 is screwed to the hook 1, and the other end is screwed to the connecting rod 5; the bearing packaging shell 6 is composed of two semi-cylinders, with a circular cavity inside, one end is a threaded connection end, and the other end is a circular hole, the threaded end is screwed to the connecting rod 5 through a thread, and a small bearing 16 is packaged in the circular cavity, and the inner end face of the circular cavity contacts the outer ring of the small bearing 16, while locking the small bearing 16 to limit the movement of the bearing; the motor 7 is fixed to the motor bracket 9 by bolts, the middle part of the motor shaft is connected to the driving wheel 13, and the motor shaft away from the motor end is fixed in the inner hole of the small bearing 16.

[0048] Among them, the bracket 8 is the fixed structure of the present device, and a "U"-shaped notch is opened at the bottom of the bracket, which is connected to the external structural parts through the notch, and two through holes are opened in the middle, and a threaded interface is designed on the upper part to be connected with the small lead screw 11; the motor bracket 9 is not a "J"-shaped bracket, one end of which is screwed to the motor, and the other end is screwed to the bearing bracket 10; the upper part of the bearing bracket 10 is threadedly connected to the small lead screw 11, and there are two bearing supporting grooves in the middle, which support the small bearing 16 and the large bearing 17 respectively, one side is in contact with the bracket 8, and the other side is screwed to the motor bracket 9; the middle part of the small lead screw 11 is connected to the bracket 8 by a thread, and the lower part is connected to the bearing bracket 10 with a small gap, and is fixed by a nut to prevent falling off.

[0049] Among them, one end of the large lead screw 12 is fixed to the small bearing 16 and encapsulated in the bearing encapsulation shell 6, so that it rotates along the axis of the large lead screw 12, and the middle part passes through the large bearing 17 and is connected to the bushing 15; the outer circle of the driving wheel 13 is meshed with the driven wheel 14, and the inner circle is fixed to the shaft of the motor 7, one side is fitted with the small bearing 16, and the other side is fitted with the end face of the motor 7; the outer circle of the driven wheel 14 is meshed with the driving wheel 13, and the inner circle is connected to the outer surface of the stepped bushing 15 by a pin key, and one end face is connected to the step end face of the stepped bushing 15 The outer end face of the large end of the step shaft is connected to the driven wheel 14 through a pin key, and the small end is in contact with the inner hole of the large bearing 17; the small bearing 16 has a total of 3 parts in the structure, 2 parts in the bearing packaging shell 6, and 1 part assembled in the bearing bracket 10; the outer ring of the large bearing 17 is in contact with the inner ring of the bearing placement groove of the bearing bracket 10, and the inner ring of the bearing is in contact with the bushing 15.

[0050] The present invention provides a simple, practical, concise and efficient automatic detection device and adjustment method for pedal force and displacement. Through creative design, the backward measurement mode and method that originally required the cooperation of four persons and the continuous language and information exchange during the detection process is improved into a method that only requires one person to measure, which greatly reduces the number of measurement personnel and saves labor costs. At the same time, the measurement time is shortened from the original 4 days to 0.5 days, which greatly shortens the detection cycle. The measurement accuracy in the original measurement process by four persons can only reach the centimeter level, and the pedal force can only reach the Newton level. Through structural design, the measurement process can be terminated and adjusted at any time, and the pedal force and pedal displacement can be stabilized at corresponding values ​​at any time, and the corresponding values ​​can be read. The measured pedal force value can be increased to 0.1 Newton, and the pedal displacement can be increased to millimeter level, which greatly improves the measurement accuracy.

[0051] The present invention provides a simple, practical, concise and efficient pedal force displacement automatic adjustment device and operation method; through creative design, the original technology that requires four people to cooperate in measurement, and the pedal force and pedal displacement information is transmitted in real time by sound during the measurement process, with low measurement accuracy, low measurement efficiency, long measurement cycle and backward technology is improved to a device that only requires one person to operate, and no communication is required during the operation, thereby improving the measurement efficiency and accuracy, shortening the detection cycle, and realizing automatic adjustment of the pedal force and displacement through program control.

[0052] In other embodiments of the present application, the present application provides an installation and adjustment process method of an automatic detection device for pedal force displacement as follows:

[0053] The first step is to follow Figure 1 , Figure 2 , Figure 3 Complete the assembly of the pedal force displacement automatic detection device.

[0054] The second step is to place the bracket 8 on a specific profile on the aircraft to complete the connection between the device and the aircraft structure.

[0055] The third step is to manually rotate the lead screw 12 using an external tool to make the hook 1 contact the pedal on the foot operating mechanism, or to operate the motor 7 in an inching mode to rotate the hook 7 until the hook 7 contacts the pedal on the foot operating mechanism.

[0056] The fourth step is to start the pedal force displacement automatic detection program, and the motor 7 rotates under the control of the program. When the pedal reaches the set displacement or the set pedal force, the motor 7 stops rotating.

[0057] The fifth step is to read the pedal force or pedal displacement data through the display and record it.

[0058] The present invention is ingeniously designed and conceived, and adopts a front-pull design scheme, which reduces the structural weight of the device to the maximum extent while meeting the strength and rigidity of the device, so that the device has the characteristics of simple structure and light weight. In addition, the process separation surface is considered when designing the device, so that the device can be quickly disassembled and reassembled during production and manufacturing and after-sales carrying and use.

[0059] The invention designs a fast-conversion interface such as a ratchet, so that the relative positions of the hook and the pedal can be manually adjusted while the motor is inching adjusted, thereby realizing fast adjustment and switching between manual and automatic adjustment.

[0060] In other embodiments of this application, please refer to Figure 4 The present application provides a pedal force displacement automatic detection circuit, including a first resistor 18, a second resistor 19, a third resistor 20, a fourth resistor 21, a first capacitor 22, a first transistor 23, a switch 24, a power supply 25, a fifth resistor 26, a first voltage regulator diode 27, a sixth resistor 28, a second voltage regulator diode 29, a processor chip 30, a motor control chip 31, a seventh resistor 32, an eighth resistor 33, a second capacitor 34, a ninth resistor 35, a tenth resistor 36, an analog-to-digital conversion chip 37, a third capacitor 38, a second transistor 39, a fourth capacitor 40, a third transistor 41, a fifth capacitor 42, a fourth transistor 43, and an eleventh resistor 44.

[0061] Among them, the force sensor 4 has a total of 4 interfaces, the positive power interface is connected to one end of the eleventh resistor, the negative power interface is grounded through a wire, the positive signal is respectively connected to the base of the first transistor 23, the fourth transistor 43, the third transistor 41, and the second transistor 39, and the negative signal is grounded through a wire; one end of the first resistor 18 is connected to the collector of the third transistor 41, and the other end is connected to the switch 24; one end of the second resistor 19 is connected to the collector of the second transistor 39, and the other end is connected to the switch 24; the third resistor One end of 20 is connected to the collector of the fourth transistor 43, and the other end is connected to the switch 24; one end of the fourth resistor 21 is connected to the collector of the first transistor 23, and the other end is connected to the switch 24; one end of the first capacitor 22 is connected to the collector of the first transistor 23, and the other end is connected to the AIN0 (pin 4) port of the analog-to-digital conversion chip 37 through a wire; the collector of the first transistor 23 is connected to the first capacitor 22 and the fourth resistor 21, the base is connected to the positive electrode of the force sensor 4 signal through a wire, and the emitter is grounded through a wire.

[0062] One end of the switch 24 is connected to the positive electrode of the power supply, and the other end is the outlet of the power supply, which is respectively connected to the eleventh resistor 44, the first resistor 18, the second resistor 19, the third resistor 20, the fourth resistor 21, the fifth resistor 26, and the sixth resistor 28; the positive electrode of the power supply 25 is connected to the switch 24, and the negative electrode of the power supply is grounded through a wire; one end of the fifth resistor 26 is connected to the switch 24, and the other end is connected to the first voltage-stabilizing diode 27; one end of the first voltage-stabilizing diode 27 is connected to the fifth resistor 26, and the other end is connected to the analog-to-digital conversion chip 37; one end of the sixth resistor 28 is connected to the switch 24, and the other end is connected to the second voltage-stabilizing diode 29; one end of the second voltage-stabilizing diode 29 is connected to the sixth resistor 28, and the other end is connected to the VCC (pin 40) port of the processor chip 30, the motor control chip 31, and the displacement sensor 2.

[0063] The VCC (pin 40) of the processor chip 30 is connected to the second voltage-stabilizing diode 29, the P2.1 port (pin 22) is connected to the Trig (pin 2) port of the displacement sensor 2 through a wire, the P2.0 port (pin 21) is connected to the Echo (pin 3) of the displacement sensor 2 through a wire, the GND port (pin 20) is grounded through a wire, the RD / P3.7 port (pin 17) is connected to one end of the tenth resistor 36 through a wire, the WR / P3.6 port (pin 16) is connected to one end of the ninth resistor 35 through a wire, the P0.2 port (pin 37) is connected to the DOUT / READY port (pin 9) of the analog-to-digital conversion chip 37 through a wire, the P0.3 port (pin 36) is connected to the DIN port (pin 10) of the analog-to-digital conversion chip 37 through a wire, and the P0. The 4 port (pin 35) is connected to the SCLK port (pin 1) of the analog-to-digital conversion chip 37 through a wire, and the P0.5 port (pin 34) is connected to the CS port (pin 2) of the analog-to-digital conversion chip 37 through a wire; the VCC port (pin 1) in the displacement sensor 2 is connected to the second voltage-stabilizing diode 29 through a wire, the Trig (pin 2) port is connected to the P2.1 port (pin 22) of the processor chip 30 through a wire, the Echo (pin 3) port is connected to the P2.0 port (pin 21) of the processor chip 30 through a wire, and the GND port is grounded through a wire; the terminal at one end of the motor 7 is connected to the F0 port (pin 5 and pin 6) of the motor control chip 31 through a wire, and the terminal at the other end of the motor is connected to the B0 port (pin 7 and pin 8) of the motor control chip 31 through a wire.

[0064] The VCC port (pin 4) of the motor control chip 31 is connected to the second voltage-stabilizing diode 29 through a wire, the GND port (pin 3) is grounded through a wire, the F1 port (pin 2) is connected to the tenth resistor 36 and the seventh resistor 32 through a wire, and the B1 port (pin 1) is connected to the ninth resistor 35, the eighth resistor 33, and the second capacitor 34 through a wire; one end of the seventh resistor 32 is connected to the F1 port (pin 2) of the motor control chip 31 through a wire, and the other end is grounded; the eighth resistor 33 is connected to the F1 port (pin 2) of the motor control chip 31 through a wire, and the other end is grounded; One end of the first resistor 35 is connected to the B1 port (pin 1) of the motor control chip 31 through a wire, and the other end is connected to the ground; one end of the second capacitor 34 is connected to the B1 port (pin 1) of the motor control chip 31 through a wire, and the other end is connected to the ground; one end of the ninth resistor 35 is connected to the B1 port (pin 1) of the motor control chip 31, and the other end is connected to the WR / P3.6 port (pin 16) of the processor chip 30 through a wire; one end of the tenth resistor 36 is connected to the F1 port (pin 2) of the motor control chip 31, and the other end is connected to the ground. One end is connected to the RD / P3.7 port (pin 17) through a wire; the SCLK port (pin 1) of the analog-to-digital conversion chip 37 is connected to the P0.4 port (pin 35) of the processor chip 30 through a wire, the CS port (pin 2) is connected to the P0.5 port (pin 34) of the processor chip 30 through a wire, the GND port is grounded through a wire, the AIN0 port (pin 4) is connected to one end of the first capacitor 22 through a wire, and the AIN1 port (pin 5) is connected to the fifth capacitor 42 through a wire. One end is connected, the AIN2 port (pin 6) is connected to one end of the fourth capacitor 40 through a wire, the AIN3 port (pin 7) is connected to one end of the third capacitor 38 through a wire, the VDD port (pin 8) is connected to the first voltage regulator diode 27 through a wire, the DOUT / READY port (pin 9) is connected to the P0.2 port (pin 37) of the processor chip 30 through a wire, and the DIN port (pin 10) is connected to the P0.3 port (pin 36) of the processor chip 30 through a wire.

[0065] One end of the third capacitor 38 is connected to the collector of the second transistor 39, and the other end is connected to the AIN3 port (pin 7) of the analog-to-digital conversion chip 37 through a wire; one end of the collector of the second transistor 39 is connected to one end of the third capacitor 38 and one end of the second resistor 19 through a wire, and the base is connected to the positive terminal of the force sensor 4 signal through a wire, and the transmitter is grounded; one end of the fourth capacitor 40 is connected to the AIN2 port (pin 6) of the analog-to-digital conversion chip 37 through a wire, and the other end is connected to the collector of the third transistor 41; the collector end of the third transistor 41 is connected to the fourth capacitor through a wire. 40, the first resistor 18 is connected, the base is connected to the positive signal terminal of the force sensor 4 through a wire, and the transmitter is grounded; one end of the fifth capacitor 42 is connected to the AIN1 port (pin 5) of the analog-to-digital conversion chip 37 through a wire, and the other end is connected to the collector of the fourth transistor 43; the collector of the fourth transistor 43 is connected to the fifth capacitor 42 and the third resistor 20 through a wire, the base is connected to the positive signal terminal of the force sensor 4 through a wire, and the transmitter is grounded; one end of the eleventh resistor 44 is connected to the positive power supply of the force sensor 4 through a wire, and the other end is connected to the switch 24 through a wire.

Claims

1. A pedal force displacement automatic adjustment circuit, characterized in that: The circuit comprises: Processor chip, A motor control chip, used for controlling the motor, the motor control chip being connected to the processor chip; The analog-to-digital conversion chip is connected to the processor chip; wherein the force sensor is connected to the motor control chip and the analog-to-digital conversion chip; and the displacement sensor is connected to the motor control chip and the analog-to-digital conversion chip.

2. A pedal force displacement automatic adjustment device, characterized in that: The device comprises: Bracket; A motor is arranged on the bracket; A driving wheel connected to the motor, wherein the motor is capable of driving the driving wheel; A driven wheel meshed with the driving wheel, the driven wheel being capable of rotating along with the driving wheel; A bushing having a threaded hole, wherein the bushing is fixedly arranged on the driven wheel; A large lead screw is installed in the threaded hole; A transfer assembly connected to one end of the large lead screw; a displacement sensor is provided on the transfer assembly; A force sensor is arranged between the adapter assembly and the hook; A hook is connected to the adapter assembly, and the hook can be hung on the pedal.

3. The device according to claim 2, characterized in that The device also includes: A motor bracket is arranged on the bracket, and the motor bracket is used to install the motor.

4. The device according to claim 2, characterized in that The switching assembly comprises: A bearing packaging shell is rotatably connected to one end of the large lead screw; A small bearing is arranged in the bearing packaging shell, and the inner ring of the small bearing is connected to one end of the large lead screw; A mounting seat is connected to the bearing packaging shell, and the mounting seat is used to mount the displacement sensor.

5. The device according to claim 4, characterized in that The switching component also includes: A connecting rod is arranged between the mounting seat and the bearing packaging shell; wherein the force sensor is arranged between the connecting rod and the hook.

6. The device according to claim 5, characterized in that The device also includes: A small lead screw is arranged on the bracket, and the small lead screw is used to adjust the position of the hook.

7. The device according to claim 6, characterized in that The hook includes: A straight rod, one end of which is connected to the force sensor; The bent portion is connected to the other end of the straight rod.

8. The device according to claim 7, characterized in that The bent portion is used to hook the pedal, and an opening is arranged on the bent portion.

9. A method for automatically adjusting pedal force displacement, characterized in that: The method comprises: The bracket is placed on the profile on the aircraft to complete the connection between the device and the aircraft structure; The large lead screw is manually rotated by using an external tool to make the hook contact with the pedal on the foot control mechanism, or the motor is operated in an inching mode to rotate until the hook contacts with the pedal on the foot control mechanism; Start the pedal force displacement automatic detection program, the motor rotates under the control of the program, and when the pedal reaches the set displacement or the set pedal force, the motor stops rotating; The pedal force or pedal displacement data is read through the display and recorded.

Images