DC MOTOR LOAD TORQUE DEVICE Russian patent published in 2023 - IPC G01L5/24 H02K26/00 G01L25/00 G01R31/34 

FIELD: electrical engineering.

SUBSTANCE: invention relates to devices for determining the parameters of electrical machines and can be used in creating installations for identifying parameters, for example, DC torque motors. The device for creating a load torque of a DC motor comprises motor 1, the stator of which is fixed in the housing, and the rotor is kinematically connected by means of friction shaft 5 to the rotor of speed meter 4, which is also fixed on the housing. It also contains an adjustable DC voltage source connected to the motor rotor input, motor voltage and current meters. To create a load adjustable moment relative to the axis of rotation, friction module 6 is used, with which pendulum load 7 is rigidly connected with the help of rod 13. Friction module 6 is a clamp with an inner cylindrical surface covering friction shaft 5. The compression force of the clamp is controlled by moving screw 6.1, and the friction load moment created by the rotation of friction shaft 5 is determined by the formula

M_ni = -mgl sin a_i * sign (ω_i),

where $$m$$ is the mass of the pendulum load; $$l$$ is the distance from the center of mass of the pendulum weight to the axis of rotation; $${\alpha }_i$$ is the angle of deviation of the pendulum weight from the local vertical; $${\omega }_i-$$ is the friction shaft speed.

EFFECT: simplifying the design of the friction module to create a load torque on the motor shaft.

1 cl, 1 dwg