CN113147993A

CN113147993A - Control system and control method for fitness electric bicycle

Info

Publication number: CN113147993A
Application number: CN202110455446.3A
Authority: CN
Inventors: 王建平
Original assignee: Beijing Shunchang New Material Technology Co ltd
Current assignee: Beijing Shunchang New Material Technology Co ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-07-23

Abstract

The invention discloses a control system and a control method of a fitness electric bicycle, belonging to the technical field of scooters, wherein the control system comprises a bicycle body, a motor, a power controller, an instruction controller and a storage battery, wherein the motor is arranged on the bicycle body and can be used for driving the bicycle body to move forward or backward and selectively generating electricity; the power controller is electrically connected with the motor and is used for controlling the motor to drive the bicycle body to move forward or backward and selectively generate electricity; the command controller is used for sending a control command to the power controller; the storage battery is electrically connected with the motor, the power controller and the command controller. In this scheme, through control motor output and step on opposite direction's moment of torsion, let the user harder at the in-process of riding, promote the body-building effect of riding, in addition, under the body-building mode, electric motor rotor can follow the wheel and rotate together, and the strength that makes the people trample is absorbed and is converted into electric power storage to the battery by electric motor rotor, makes it can realize the electricity generation at the body-building in-process.

Description

Control system and control method for fitness electric bicycle

Technical Field

The invention relates to the technical field of scooters, in particular to a control system and a control method of a fitness electric bicycle.

Background

At present, electric bicycles are common tools for short-distance travel. Conventional electric bicycles use an electronic throttle drive or speed/torque sensors located at the bottom of the center shaft, crank or wheel that send a signal to the controller to activate the motor when a person steps on the pedals, making the person feel easier when stepping forward. However, the existing electric bicycle only can be ridden by a user with more labor-saving or no effort at all. The riding process of the user cannot be more strenuous. In order to achieve the purpose of body building, a bicycle fan often needs to find an uphill road to ride when riding so as to achieve the purpose of more labor-consuming riding. During cycling training, the user may also seek to meet a specific training parameter, such as a requirement for maintaining the pedaling frequency or maintaining the power output value. However, the existing electric bicycles cannot meet the requirements of more strenuous exercise and cannot provide the exercise data.

Disclosure of Invention

Therefore, the embodiment of the invention provides a control system of a fitness electric bicycle, which aims to solve the technical problem that the existing electric bicycle cannot meet fitness requirements.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

there is provided, in accordance with an embodiment of the present invention, an exercise electric bicycle control system, including:

a bicycle body;

the motor is arranged on the bicycle body, can be used for driving the bicycle body to move forwards or backwards and can selectively generate electricity;

the power controller is electrically connected with the motor and is used for controlling the motor to drive the bicycle body to move forwards or backwards and selectively generate electricity;

the command controller is electrically connected with the power controller and used for sending a control command to the power controller;

the storage battery is arranged on the bicycle body and is respectively and electrically connected with the motor, the power controller and the instruction controller.

Further, the motor is a hub motor, and the hub motor is rotatably connected with the rear wheel of the bicycle body; or

The motor is a middle motor, and the middle motor is rotationally connected with a middle shaft fluted disc of the bicycle body.

Further, a torque sensor is arranged on a pedal crank of the bicycle body, and the torque sensor is electrically connected with the power controller.

Furthermore, a position encoder is arranged on a pedal crank of the bicycle body, and the position encoders are respectively and electrically connected with the power controller.

Further, the fitness electric bicycle control system further comprises an upper computer, wherein the upper computer is electrically connected with the instruction controller and is used for sending instructions to the instruction controller or receiving data information sent by the instruction controller.

Furthermore, a control handle or a control touch screen or a voice control module is arranged on the upper computer.

Further, body-building electric bicycle control system still include high in the clouds server, the host computer with the high in the clouds server passes through wireless communication module and connects.

The invention also provides a control method of the fitness electric bicycle, which comprises the following steps:

step S1, selecting the bicycle body to be in a fitness mode state;

and step S2, controlling the motor to select a power generation mode, controlling the motor to output a torque current torque opposite to the pedal direction, and generating power to the storage battery.

Further, the control method further includes:

step S3, obtaining the frequency of the user stepping on the pedal;

and step S4, controlling the output current of the motor according to the acquired frequency of the pedal stepping of the user.

Further, after the fitness mode is finished, the fitness data are obtained, and the fitness data are uploaded to the cloud server.

The embodiment of the invention has the following advantages:

the instruction controller sends an instruction to the power controller, the power controller can control the motor to drive the bicycle body to move forward or backward and can select to generate electricity, if the instruction controller sends a body-building mode, the power controller controls the motor to be in the electricity-generating mode, at the moment, the output torque of the motor is opposite to the treading direction of the pedal, meanwhile, the riding force during uphill climbing can be simulated in the flat road or even downhill process, the treading force required by the bicycle can be specifically set by the instruction controller, the treading force feeling during different gradients can be simulated by calculation, compared with the traditional electric bicycle, the bicycle has the advantages that the torque opposite to the treading direction is increased by controlling the output of the motor, the riding process of a user is more strenuous, the body-building effect is improved, in addition, in the body-building mode, the rotor of the motor can rotate along with the wheels of the bicycle body, the strength of treading by a person can be absorbed by the motor rotor and converted into electric power to be stored in the storage battery, so that the electric power can be generated in the body-building process, and the user has more sense of achievement in the body-building process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a schematic structural diagram of an exercise electric bicycle control system according to an embodiment of the present invention;

FIG. 2 is a flowchart illustrating a control method for the exercise electric bicycle according to an embodiment of the present invention;

FIG. 3 is another flow chart of a control method for an electric exercise bicycle according to an embodiment of the present invention;

FIG. 4 is a logic diagram of an exercise electric bicycle control system according to an embodiment of the present invention;

FIG. 5 is a speed control function diagram of an exercise electric bicycle control system according to an embodiment of the present invention;

FIG. 6 is a graph of a climbing current gain function of a exercise electric bicycle control system according to an embodiment of the present invention;

FIG. 7 is a graph of a physical power gain function of a control system of an electric exercise bicycle according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of the charged state potentials of the exercise electric bicycle control system according to an embodiment of the present invention;

fig. 9 is a schematic current flow diagram of a current storage phase of a control system of an electric exercise bicycle in a charging state according to an embodiment of the present invention;

FIG. 10 is a schematic diagram illustrating a charging phase current flow of the exercise electric bicycle control system according to an embodiment of the present invention;

fig. 11 is a circuit diagram of a motor control circuit of a control system of an electric exercise bicycle according to an embodiment of the present invention.

In the figure: 1-an upper computer; 2-an instruction controller; 3-a storage battery; 4-a power controller; 5-pedal crank; 6-middle shaft fluted disc; 7-rear wheel; 8, a motor; 9-a position encoder; 10-torque sensor.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for clarity of description, and are not intended to limit the scope of the present invention, and changes or modifications in the relative relationship may be made without substantial changes in the technical content.

As shown in fig. 1 and 4, and fig. 5 to 11, according to an embodiment of the present invention, there is provided a fitness electric bicycle control system, including a bicycle body, a motor 8, a power controller 4, a command controller 2, and a battery 3, wherein the motor 8 is provided on the bicycle body, and can be used for driving the bicycle body to move forward or backward and can selectively generate electricity; the power controller 4 is electrically connected with the motor 8 and is used for controlling the motor 8 to drive the bicycle body to move forward or backward and selectively generate electricity; the command controller 2 is electrically connected with the power controller 4 and used for sending a control command to the power controller 4; the storage battery 3 is arranged on the bicycle body and is respectively and electrically connected with the motor 8, the power controller 4 and the instruction controller 2.

The control system of the body-building electric bicycle provided by the invention sends an instruction to the power controller 4 through the instruction controller 2, the power controller 4 can control the motor 8 to drive the bicycle body to move forward or backward and can select to generate electricity, if the instruction controller 2 sends a body-building mode, the power controller 4 controls the motor 8 to be in the electricity generation mode, at the moment, the output torque of the motor 8 is opposite to the treading direction of a pedal, meanwhile, the riding force during uphill can be simulated in the flat road and even downhill processes, specifically, the treading force required by the bicycle can be changed through the setting of the instruction controller 2, the treading body feeling during different slopes can be simulated through calculation, compared with the traditional electric bicycle, because the torque opposite to the treading direction is added by controlling the motor 8, the user is more strenuous in the riding process, the riding body-building effect is improved, in addition, under the body-building mode, the rotor of motor 8 can rotate along with the wheel of bicycle body, can make the strength that the people trampled absorbed and change into electric power storage battery 3 by motor 8 rotor, makes it can realize the electricity generation at the body-building in-process, makes the user more have the sense of achievement at the body-building in-process.

It should be noted that the command controller 2 may also control the motor 8 to drive the bicycle body to move forward by sending a command to the power controller 4, and when the bicycle is used as the forward motor 8, the power controller 4 may adjust the speed of the motor 8 by a six-step method, a twelve-step method, an FOC (field-oriented control) method, or the like, so as to move the vehicle forward. When the instruction controller 2 sends an instruction to the power controller 4 to control the motor 8 to drive the bicycle body to move backwards, the power controller 4 can regulate the speed of the motor 8 in a six-step method, a twelve-step method, an FOC method and the like to enable the vehicle to move backwards or prevent the vehicle from being pushed away in a locked state. The related technology that the power controller 4 can regulate the speed of the motor 8 by a 6-step method, a 12-step method, an FOC method and the like is mature in the prior art, and is not repeated herein. In addition, the hardware configuration used when the motor 8 is in the generator 8 state is the same as the conventional BLDC controller configuration.

As shown in fig. 1, in an embodiment of the present invention, further, the motor 8 is a hub motor 8, and the hub motor 8 is rotatably connected to the rear wheel 7 of the bicycle body; or

The motor 8 is a middle motor 8, and the middle motor 8 is rotatably connected with a middle shaft fluted disc 6 of the bicycle body.

In this embodiment, the motor 8 may be a center motor 8 at a pedal center shaft position, or a hub motor 8 at a wheel position, and specifically, the motor 8 may be a dc brushless motor 8, or a brush motor 8. However, when the motor 8 is selected as the in-wheel motor 8, a one-way clutch cannot be arranged in the transmission between the rotor of the motor 8 and the wheel, the one-way clutch (such as a one-way ratchet wheel) needs to be arranged in the transmission process between the wheel and the pedal, a one-way clutch module is not used between the rotor of the motor 8 and the wheel, the wheel is always connected with the rotor of the motor 8 to rotate in the rotating process, and when the motor 8 is used for generating electricity, the rotor of the motor 8 cannot rotate due to the existence of the one-way clutch, so that the force of pedaling of a person can be absorbed by the rotor of the motor 8 and converted into electric power. When the middle-placed motor 8 is used for driving, a one-way clutch cannot be used between the middle shaft fluted disc 6 at the pedal crank 5 and the rotor of the middle-placed motor 8, and the rotation of the middle shaft fluted disc 6 can always drive the rotor of the middle-placed motor 8 to rotate so as to generate power.

As shown in fig. 1 and 4, in an embodiment of the present invention, a torque sensor 10 is further disposed on the pedal crank 5 of the bicycle body, and the torque sensor 10 is electrically connected to the power controller 4.

In this embodiment, through the arrangement of the torque sensor 10, it can detect the torque information data of the pedal state, and send these torque information data to the power controller 4, the power controller 4 sends them to the instruction controller 2, the instruction controller 2 analyzes, and can send different instructions to the power controller 4 according to different torque information, of course, the instruction controller 2 can also send the torque information data to the upper computer 1, and the upper computer 1 can also store, display and analyze.

As shown in fig. 1 and 4, in the above embodiment, the pedal cranks 5 of the bicycle body are further provided with position encoders 9, and the position encoders 9 are electrically connected to the power controllers 4, respectively.

In this embodiment, through the setting of position encoder 9, it can detect the position information data of pedal state, and send these position information data to power controller 4, power controller 4 sends it to command controller 2, command controller 2 analyzes, can send different instructions to power controller 4 according to different position information, that is whether can discern the user through position information and be in body-building fatigue state, the output current of control motor 8, of course, command controller 2 also can send this torque information data to host computer 1, host computer 1 also can be preserved, show and analysis use.

As shown in fig. 1 and 4, in an embodiment of the present invention, further, the fitness electric bicycle control system further includes an upper computer 1, where the upper computer 1 is electrically connected to the command controller 2, and is configured to send a command to the command controller 2 or receive data information sent by the command controller 2. Optionally, a control handle or a control touch screen or a voice control module is arranged on the upper computer 1.

In this embodiment, the mcu (microcontroller unit) in the upper computer 1 has a strong calculation power. Host computer 1 can have user interaction output module, like display, speaker for show information to the user, can also have user interaction input module: such as a touch screen, a joystick, a microphone, for receiving commands or information data from a user. And a short-distance wireless communication module, such as Bluetooth, wifi or zigbee, may be provided to receive the information uploaded by the command controller 2 and send the command to the command sensor. The upper computer 1 is provided with a 4G or 5G wireless communication module and is used for connecting a cloud server and storing and calling cloud data; in addition, optionally, the upper computer 1 may also have other motion related sensors, such as an accelerometer (angle), a barometer, and a heart rate sensor, for sensing the vehicle state and the user state. For example, the actual grade of the riding section, whether the user's quantity of motion has been overloaded, etc. may be sensed. For example, a mobile phone can be used as the upper computer 1 after being connected with an external control handle and other modules. During and after riding, the bicycle body can display various data in real time through the upper computer 1, and the data can be used for guiding a user to exercise. Host computer 1 can be furnished with display screen, mic, modules such as speaker, makes and to accomplish the music amusement at the in-process of riding, and the team talkbacks, the navigation of riding, epitaxial functions such as real-time body-building data show.

It should be noted that the above principle and functional modules of the upper computer 1 are conventional circuits in the prior art, and are not described herein again.

In addition, for the scheme of the torque sensor 10 and the position encoder 9, the torque sensor 10 and the position sensor may not be provided, and the road condition of the road section where the user actually rides is judged by using a GPS, a barometer, an angular velocity, a velocity and acceleration sensor, a magnetic induction sensor and the like in the upper computer 1, the total output power required by the current riding speed is estimated, and the body building power/the pedaling torque of the user is obtained by inverse calculation after subtracting the output/input power of the motor 8 and the system power loss obtained according to experience.

In an embodiment of the present invention, the exercise electric bicycle control system further includes a cloud server, and the upper computer 1 is connected to the cloud server through a wireless communication module.

In this embodiment, parameter calculation, record, analysis when riding are mainly accomplished by host computer 1, then transmit to the high in the clouds server through host computer 1, are not restricted to the hardware computing power of controller in the bicycle. The system can be networked, the system is assisted by cloud big data and a cloud algorithm to be adjusted, and then the system is sent to the upper computer 1, and an instruction is sent to the instruction controller 2 through the MCU to adjust the instruction, so that a user can not give up pedaling due to fatigue in the body building process, and the training effect cannot be achieved due to too light.

As shown in fig. 2 to 7, an embodiment of the present invention further provides a control method of an exercise electric bicycle, including:

step S1, selecting the bicycle body to be in a fitness mode state;

in step S2, the control motor 8 selects the power generation mode, and the control motor 8 outputs a torque current torque in the direction opposite to the pedal direction, and generates power to the battery 3.

In this embodiment, the user operates the upper computer 1 or the command controller 2 to start the bicycle body. The wheels are in a locked state before starting up, and when the bicycle body is tried to be pushed away, the motor 8 rotates reversely or generates electricity, so that the bicycle is prevented from being stolen. Other operations can be performed after the vehicle is started. The automatic body-building bicycle not only has the traditional function of advancing and receding, can select the body-building mode through instruction controller 2 or host computer 1, and control motor 8 output and footboard opposite direction's the current moment of torsion, lets the user harder at the in-process of riding, promotes the body-building effect of riding, and then realizes the body-building effect. In addition, the rotor of the motor 8 can rotate along with the rear wheel 7 or the middle shaft gear disk 6, and therefore electricity generation is achieved. That is, a part of the pedaling force of the user is used for supplying the vehicle to move forward, and the other part of the pedaling force is finally converted into electric quantity which is stored in the storage battery 3.

It should be noted that the power controller 4 needs to have a Boost charging control module and a control program therein. The specific implementation method comprises the following steps: the coil wound in the motor 8 is used as an energy storage inductor, and an inductor, a capacitor or the existing protection inductor and capacitor parameters are additionally increased according to the requirement. The back electromotive force generated by cutting a magnetic induction line by using a coil of the motor 8 is used for adjusting PWM chopping to form a complete circuit charging and follow current state by a Boost method, and the current generated by pedaling is input to 3. The Boost method is a general technique that is already disclosed, and is not described in detail herein.

Specifically, a Boost voltage-boosting circuit is constructed using a coil in the motor 8 as a current-storage energy-storage inductor to charge the battery 3, for example, when the coil cuts a magnetic induction line to generate electromotive force in a phase a to a phase C direction. Pwm chopping was performed using a half bridge mos in phase C, with the direction of current flow during the freewheeling phase shown by the arrow. The direction of the current flow during the charging phase is shown by the arrow. Similarly, the use of Boost may also be used to charge the battery using a brushed motor 8 or other type of motor 8. And will not be described in detail herein.

It should be noted that, because of the fitness (power generation) mode, the following protection program segments and protection modules are added to the control system. In the Boost method, in order to avoid the situation that the voltage in the power controller 4 is too high and circuit elements are damaged due to the reasons that the PWM duty ratio is over-adjusted, the charged storage battery 3 is off-line and the like, a negative feedback protection module is added at the signal input end (grid) of the mos tube, and the Boost charging output is stopped when the voltage of the output end is larger than a limit value. Similarly, to avoid the voltage in the power controller 4 from being too high, a voltage relief (TVS, etc.) and a voltage clamp module are required in the power controller 4. The current needs to be closed loop/threshold controlled in the control program. The current control value is if, and is different when 3 electric quantities of battery, and the voltage gap can lead to the electricity generation, and when power consumption in-process power controller 4 controlled motor 8 with the electric current mode, the motor 8 actual output/input power is different, and the experience of riding also has the gap, and the speed of a motor vehicle is faster when the concrete expression is the high electric quantity of battery 3, and pedal required strength is great during the low electric quantity. In order to solve the problem, a power correction module and a corresponding control algorithm can be selected and matched in the power controller 4, so that the difference of riding experience under different electric quantities is solved. In order to avoid that the generated energy cannot be released due to the fact that the charged storage battery 3 is offline, a power management system in the storage battery 3 is provided with a time delay or conditional protection module, the sensitivity of overcharge protection time is reduced, and the situation that the battery is offline due to the fact that the instability of the manual power generation charging activation power supply is strong is avoided. In addition, a connecting module with redundancy design can be added at the connecting part of the storage battery 3 and the power controller 4, so that the problem that the circuit is damaged by generated energy caused by vibration separation or poor contact in the driving process is avoided. And a protection strategy and a protection module are required to be added in the instruction controller 2, and when the current electric quantity and the current voltage of the storage battery 3 are higher than limit values, the fitness mode is not allowed to be started, or the fitness power generation intensity is limited.

In addition, when the user rides for a long time and the physical strength is reduced, the upper computer 1 can know the situation through real-time data of each sensor. And adjusting and issuing a control function F. At the moment, the power controller 4 controls the motor 8 to gradually convert power generation into power utilization, the bicycle mode is converted from the fitness mode into the power assisting mode, the process can be automatically completed by the upper computer 1, and the user actively operates the buttons on the upper computer 1 or the instruction controller 2 to realize the process.

The control function relationship can be designed into the most suitable function relationship according to the requirement, such as the control function F of the previous user state. The upper computer 1 transmits the control function F downwards through the instruction controller 2, stores the control function F into the power controller 4, and uses the control function F in real time in the process of driving the motor 8 by the power controller 4. When the user's requirement or movement state changes and the control function F needs to be changed during the riding process, the process described in this paragraph can be repeated.

The input variables of the control function F are the state of the electric machine 8, the state of the pedals, the state of the vehicle, the state of the user. The output (control) variables are the current of the motor 8 and the rotation speed of the motor 8.

Now, the control function F is illustrated, and it should be noted that the example presented herein is only a brief description of the method, and does not represent the type of all F control functions, nor all function mapping methods:

as shown in fig. 5, in different user-set gears, the control function F is composed of a single variable of the state (rotation speed) of the motor 8;

in the power-assisted mode, when the speed is 20-22km/h, the power controller 4 outputs 5A current to the motor 8, and the pedal is treaded most easily at the moment, so that the bicycle is suitable for a user who likes to ride in a high-speed state in a labor-saving manner.

In the body-building mode, when the speed is 14-16km/h, the motor 8 generates electricity by 3A current, and the pedal needs large force when being pedaled, so that the bicycle is suitable for customers needing large amount of exercise during medium-speed riding.

As shown in fig. 6, the control function F is composed of a single variable of the bicycle state (gradient). When the vehicle state is an uphill, the output current of the power controller 4 to the motor 8 is increased. And vice versa.

As shown in fig. 7, the control function F is a control function constituted by a single variable of the user state (physical strength). When the user's physical strength decreases, power controller 44 outputs a greater current to motor 8 to support the user's ride. The physical remaining value is the score of the physical condition of the user after the upper computer 1 integrates the current riding data and the user state.

It should be noted that F controlled by multiple variables may be accumulated, multiplied or constructed by other construction methods by single variable F.

As shown in fig. 3, in the above embodiment, further, the control method further includes:

step S3, obtaining the frequency of the user stepping on the pedal;

and step S4, controlling the motor 8 to output current according to the acquired frequency of the pedal stepping of the user.

In the riding process, the power controller 4 uploads data (treading frequency and treading torque) obtained by the torque sensor 10 and the position encoder 9, data (power generation/power utilization current, voltage and rotating speed of the motor 8) generated in the running process of the motor 8 and the like to the instruction controller 2 in real time, and the data is transmitted to the upper computer 1 by the instruction controller 2. The upper computer 1 can record the data of the sensors and the connected external equipment in a unified way. In addition, a chart of each parameter can be drawn in the riding process and displayed by a display screen contained on the upper computer 1, so that the user is informed of the current body building strength and physical condition. After riding is finished, the upper computer 1 integrates various data information in the body building process and gives a body building effect report of the time.

The pedaling power calculation method includes:

the manpower output power is equal to the power required by the current gradient, speed and load plus the power required by the current acceleration minus the output power of the motor 8;

when the human power output is greater than zero, it can be understood that the pedaling is synchronous with the rotation speed of the motor 8 (the user is pedaling), and then the pedaling speed can be calculated:

the pedaling speed is equal to the current rotational speed of the motor 8 multiplied by the chain drive ratio.

In any of the above embodiments, further, after the fitness mode is ended, the fitness data of this time is acquired, and the fitness data is uploaded to the cloud server. After riding for body building, the upper computer 1 may store the body building data (or transmit the body building data to the cloud server as required). Assist the user in recording his or her exercise history and use the historical data to give the user appropriate exercise guidance or adjust exercise intensity during future exercise sessions. After the command controller 2 uploads the state and pedal state of the motor 8 counted by the power controller 4 to the upper computer 1, the upper computer 1 compares and fits the state and user state parameters of the bicycle body with experience functions existing at the cloud or the local of the upper computer 1 (the experience functions can be compiled by technicians in the field according to big riding data of users or automatically generated by an AI learning mode).

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A fitness electric bicycle control system, comprising:

a bicycle body;

the motor (8) is arranged on the bicycle body, can be used for driving the bicycle body to move forward or backward and can selectively generate electricity;

the power controller (4) is electrically connected with the motor (8) and is used for controlling the motor (8) to drive the bicycle body to move forward or backward and selectively generate electricity;

the command controller (2), the command controller (2) is electrically connected with the power controller (4) and is used for sending a control command to the power controller (4);

the storage battery (3) is arranged on the bicycle body and is respectively electrically connected with the motor (8), the power controller (4) and the instruction controller (2).

2. A fitness electric bicycle control system according to claim 1, wherein the electric motor (8) is a hub motor, which is rotatably connected with a rear wheel of the bicycle body; or

The motor (8) is a middle motor, and the middle motor is rotationally connected with a middle shaft fluted disc of the bicycle body.

3. A fitness electric bicycle control system according to claim 1, wherein a torque sensor (10) is provided on a pedal crank (5) of the bicycle body, the torque sensor (10) being electrically connected to the power controller (4).

4. A fitness electric bicycle control system according to claim 1, wherein the pedal cranks (5) of the bicycle body are provided with position encoders (9), the position encoders (9) being electrically connected to the power controllers (4), respectively.

5. A fitness electric bicycle control system according to any one of claims 1 to 4, further comprising an upper computer (1), wherein the upper computer (1) is electrically connected with the command controller (2) and is used for sending commands to the command controller (2) or receiving data information sent by the command controller (2).

6. A fitness electric bicycle control system according to claim 5, wherein the upper computer (1) is provided with a control handle or a control touch screen or a voice control module.

7. A fitness electric bicycle control system according to claim 5, further comprising a cloud server, wherein the upper computer (1) is connected with the cloud server through a wireless communication module.

8. A method of controlling a fitness electric bicycle, comprising:

step S1, selecting the bicycle body to be in a fitness mode state;

9. The exercise electric bicycle control method according to claim 8, further comprising:

step S3, obtaining the frequency of the user stepping on the pedal;

10. The control method of the fitness electric bicycle according to claim 8, wherein after the fitness mode is finished, the fitness data is acquired and uploaded to a cloud server.