Dual-motor gear transmission system torque equalization control method

A technology of gear transmission and balanced control, applied in the direction of motor speed or torque control, control system, electrical components, etc., can solve problems such as uneven load, unbalanced output torque, motor overload, etc., to achieve excellent performance, The effect of reducing the synchronization error

Active Publication Date: 2016-12-14
TIANJIN POLYTECHNIC UNIV
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Problems solved by technology

However, the gear transmission is a rigid connection of the hard shaft, and the two motors are forced to be synchronized; if the load is constant, the output torque of the two motors is in a coupling relationship of "one decreases and the other grows"
Due to the different rigidity of the motor shaft, the different degree of lubrication of the gears, and the unknown deviation of the gear me

Method used

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  • Dual-motor gear transmission system torque equalization control method
  • Dual-motor gear transmission system torque equalization control method
  • Dual-motor gear transmission system torque equalization control method

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Embodiment Construction

[0028] A torque balance control method for a dual-motor gear transmission system, which can effectively suppress the problem of unbalanced output torque, and double-synchronize the speed and torque of the control system. The present invention adopts the following technical solutions:

[0029] (1) System structure model: Two permanent magnet synchronous motors in the system jointly drive the load. The permanent magnet synchronous motor adopts the field-oriented vector control method with the stator direct axis current equal to zero. The coupling parts between the motor and the motor, and between the motor and the load are made of steel. Quality involute cylindrical spur gear, the pinion gears 1 and 2 installed on the shafts of the two motors are the driving gears of the system, and the middle is the driven gear connected to the load.

[0030] (2) Calculation of torque synchronization error: set T e1 and T e2 are the electromagnetic torques of motors 1 and 2 respectively, then ...

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Abstract

The invention relates to the field of dual-motor system control, and provides a dual-motor gear transmission system torque equalization control method so as to realize effective inhibition for output torque imbalance and control dual-synchronization in rotating speed and torque of the system. The invention adopts the following technical scheme: the dual-motor gear transmission system torque equalization control method comprises the steps of (1) a structural model of the system; (2) torque synchronization error calculation, wherein Te1 and Te2 are supposed to be electromagnetic torques of a motor 1 and a motor 2 respectively, a torque synchronization error of the system is defined as E(s)=Te1(s)-Te2(s), E serves as a feedback variable and acts on a synchronization controller, and the size of E reflects the performance of system torque equalization control; and (3) synchronization controller design. The method provided by the invention mainly applied to dual-motor control occasions.

Description

technical field [0001] The invention relates to the field of double motor system control, in particular to the field of torque balance control of a double motor gear transmission system. Background technique [0002] With the rapid development of modern industry, a single motor system can no longer meet various production needs. In industrial fields such as steel, papermaking, textiles, and robotics, the coordination and cooperation of multiple motors are relied on to achieve practical goals, thereby meeting people's requirements for product performance and quality. Especially in high-power traction systems, ship propulsion systems, and cement building systems, the required output torque is very large, and usually multiple motors are required to jointly drive the same load. The dual-motor gear synchronous drive system can increase the output torque on the basis of reducing the system volume, and is widely used in high-power, low-speed industrial fields. However, the gear t...

Claims

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Application Information

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IPC IPC(8): H02P5/747
CPCH02P5/747
Inventor 耿强夏长亮刘涛单长帅
Owner TIANJIN POLYTECHNIC UNIV
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