Strength exercise method and apparatus

Abstract

A strength exercise method includes: acquiring a range of motion of each set of actions based on a pull assembly; adjusting, based on the range of motion of the each set of actions and a predetermined first linear function, a pull force output by a motor to a first pull force; acquiring a speed of motion of the pull assembly; and decreasing, based on the speed of motion of the pull assembly and/or the range of motion of the each set of actions, the pull force output by the motor to a second pull force according to a predetermined second linear function.

What is claimed is: 
     
         1 . A strength exercise method, comprising:
 acquiring a range of motion of each set of actions based on a pull assembly;   adjusting, based on the range of motion of the each set of actions and a predetermined first linear function, a pull force output by a motor to a first pull force;   acquiring a speed of motion of the pull assembly; and   decreasing, based on the speed of motion of the pull assembly and/or the range of motion of the each set of actions, the pull force output by the motor to a second pull force according to a predetermined second linear function.   
     
     
         2 . The strength exercise method according to  claim 1 , wherein acquiring the range of motion of the each set of actions comprises:
 acquiring a maximum value pos_max(1) and a minimum value pos_recycle(1) that are respectively pulled and recycled by the pull assembly for a first time, and a maximum value pos_max(2) and a minimum value pos_recycle(2) that are respectively pulled and recycled by the pull assembly for a second time;   in the case that pos_max(2)≥pos_max(1)−X and pos_max(2)−pos_recycle(2)≥X, calibrating the range of motion as ROM=pos_max(1)−pos_recycle(1), wherein X is a predetermined first threshold; and   in the case that pos_max(2)<pos_max(1)−X or pos_max(2)−pos_recycle(2)<X, pulling the pull assembly again until pos_max(n)≥pos_max(n−1)−X and pos_max(n)−pos_recycle(n)≥0.05 m, and then calibrating the range of motion as ROM=pos_max(n−1)−pos_recycle(n−1).   
     
     
         3 . The strength exercise method according to  claim 1 , further comprising:
 acquiring a training parameter of a user;   acquiring the predetermined first linear function according to a training mode selected by the user;   calculating the first pull force based on the training parameter of the user and the predetermined first linear function corresponding to the training mode; and   adjusting the pull force output by the motor to the first pull force.   
     
     
         4 . The strength exercise method according to  claim 1 , further comprising:
 acquiring a direction of motion of the pull assembly; and   acquiring speeds of motion of the pull assembly in different directions;   wherein when the pull assembly moves outwards, in the case that the speed of motion of the pull assembly is less than a predetermined first pull-out speed, the pull force output by the motor is decreased according to the predetermined second linear function; and in the case that the speed of motion of the pull assembly is greater than or equal to a predetermined second pull-out speed or the range of motion of a current action is greater than a first predetermined ratio of the acquired range of motion of the each set of actions, the pull force output by the motor stops being decreased; and   wherein when the pull assembly moves inwards, in the case that the speed of motion of the pull assembly is less than a predetermined first recycle speed and the range of motion of the current action is less than the first predetermined ratio of the acquired range of motion of the each set of actions, the pull force output by the motor is decreased according to the predetermined second linear function; and in the case that the speed of motion of the pull assembly is greater than a predetermined second recycle speed, the pull force output by the motor stops being decreased.   
     
     
         5 . The strength exercise method according to  claim 4 , wherein upon completion of any single action in the each set of actions, the second pull force is not changed or is increased by a predetermined value. 
     
     
         6 . The strength exercise method according to  claim 3 , wherein the training mode comprises a chain mode, a centrifugal contraction, or a protection mode. 
     
     
         7 . The strength exercise method according to  claim 1 , further comprising:
 starting in-set counting upon acquiring the range of motion of the each set of actions, wherein an in-set count is an initial value; and   adding the in-set count by 1 in the case that a difference between a maximum distance and a minimum distance pulled by the pull assembly is greater that a first predetermined ratio of the range of motion.   
     
     
         8 . A strength exercise apparatus, comprising:
 at least one processor;   and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to perform operations comprising:   acquiring a range of motion of each set of actions based on a pull assembly;   adjusting, based on the range of motion of the each set of actions and a predetermined first linear function, a pull force output by a motor to a first pull force;   acquiring a speed of motion of the pull assembly; and   decreasing, based on the speed of motion of the pull assembly and/or the range of motion of the each set of actions, the pull force output by the motor to a second pull force according to a predetermined second linear function.   
     
     
         9 . The strength exercise apparatus according to  claim 8 , wherein the operations further comprise:
 acquiring a maximum value pos_max(1) and a minimum value pos_recycle(1) that are respectively pulled and recycled by the pull assembly for a first time, and a maximum value pos_max(2) and a minimum value pos_recycle(2) that are respectively pulled and recycled by the pull assembly for a second time;   in the case that pos_max(2)≥pos_max(1)−X and pos_max(2)−pos_recycle(2)≥X, calibrating the range of motion as ROM=pos_max(1)−pos_recycle(1), wherein X is a predetermined first threshold; and   in the case that pos_max(2)<pos_max(1)−X or pos_max(2)−pos_recycle(2)<X, pulling the pull assembly again until pos_max(n)≥pos_max(n−1)−X and pos_max(n)−pos_recycle(n)≥0.05 m, and then calibrating the range of motion as ROM=pos_max(n−1)−pos_recycle(n−1).   
     
     
         10 . The strength exercise apparatus according to  claim 8 , wherein the operations further comprise:
 acquiring a training parameter of a user;   acquiring the predetermined first linear function according to a training mode selected by the user;   calculating the first pull force based on the training parameter of the user and the predetermined first linear function corresponding to the training mode; and   adjusting the pull force output by the motor to the first pull force.   
     
     
         11 . The strength exercise apparatus according to  claim 8 , wherein the operations further comprise:
 acquiring a direction of motion of the pull assembly; and   acquiring speeds of motion of the pull assembly in different directions;   wherein when the pull assembly moves outwards, in the case that the speed of motion of the pull assembly is less than a predetermined first pull-out speed, the pull force output by the motor is decreased according to the predetermined second linear function; and in the case that the speed of motion of the pull assembly is greater than or equal to a predetermined second pull-out speed or the range of motion of a current action is greater than a first predetermined ratio of the acquired range of motion of the each set of actions, the pull force output by the motor stops being decreased; and   wherein when the pull assembly moves inwards, in the case that the speed of motion of the pull assembly is less than a predetermined first recycle speed and the range of motion of the current action is less than the first predetermined ratio of the acquired range of motion of the each set of actions, the pull force output by the motor is decreased according to the predetermined second linear function; and in the case that the speed of motion of the pull assembly is greater than a predetermined second recycle speed, the pull force output by the motor stops being decreased.   
     
     
         12 . The strength exercise apparatus according to  claim 11 , wherein upon completion of any single action in the each set of actions, the second pull force is not changed or is increased by a predetermined value. 
     
     
         13 . The strength exercise apparatus according to  claim 10 , wherein the training mode comprises a chain mode, a centrifugal contraction, or a protection mode. 
     
     
         14 . The strength exercise apparatus according to  claim 8 , wherein the operations further comprise:
 starting in-set counting upon acquiring the range of motion of the each set of actions, wherein an in-set count is an initial value; and   adding the in-set count by 1 in the case that a difference between a maximum distance and a minimum distance pulled by the pull assembly is greater that a first predetermined ratio of the range of motion.