Electronic parking direct-current motor angle control method based on state feedback

A DC motor, state feedback technology, applied in the direction of DC motor speed/torque control, control system, control of mechanical energy, etc., can solve the problems of soft mechanical characteristics, inaccurate control, large mechanical impact, etc. The effect of smooth adjustment process and strong load capacity

Inactive Publication Date: 2020-11-24
SHANGHAI AUTOMOBILE GEAR WORKS
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  • Abstract
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  • Claims
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Problems solved by technology

However, this method will lead to defects such as inaccurate co

Method used

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  • Electronic parking direct-current motor angle control method based on state feedback
  • Electronic parking direct-current motor angle control method based on state feedback
  • Electronic parking direct-current motor angle control method based on state feedback

Examples

Experimental program
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Example Embodiment

[0017] Such as figure 1 Shown is the key part of the parking mechanism. The rotating shaft is driven by a DC motor, and the pawl can be pressed into the cogging groove of the gearbox to lock the gearbox to achieve parking. When unlocking is needed, the DC motor drives the shaft to reverse to release the pawl. Therefore, accurately and quickly controlling the rotation angle of the DC motor is the key to ensuring the working performance of the mechanism.

[0018] Such as figure 2 Shown is the equivalent circuit of a DC motor, which includes the armature resistance R connected in series to form a loop a , Armature inductance L a , Back EMF E a , Armature voltage U a And armature current I a .

[0019] The torque balance equation of the motor is Where: T e Is electromagnetic torque, T L Is load torque, ω is angular velocity, t is time, C T Is the torque constant, Φ is the main magnetic flux per pole, J is the moment of inertia, according to the electromagnetic torque definition, ther...

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Abstract

A direct-current motor angle control method based on state feedback comprises the steps that a state equation and a transfer function of a direct current motor are established according to a direct current motor equivalent circuit model, state feedback is further introduced to reconfigure a system pole of the transfer function, and therefore structural optimization design of a controller is achieved. The damping coefficient and the response speed of the control system can be conveniently and quickly adjusted; compared with a traditional control mode, the adjusting process is more stable; and the mechanical property is harder, and the loading capacity is stronger.

Description

technical field [0001] The invention relates to a technology in the field of motor control, in particular to a method for controlling the angle of a DC motor for electronic parking based on state feedback. Background technique [0002] At present, most of the actuators used for electric parking in vehicles are driven by brushed DC motors, and the control method is mostly PID control, and the parameters are all set by experience. However, such methods will lead to defects such as inaccurate control, large mechanical impact, and soft mechanical properties. Contents of the invention [0003] The present invention aims at the above-mentioned deficiencies existing in the prior art, and proposes a DC motor angle control method based on state feedback. [0004] The present invention is achieved through the following technical solutions: [0005] The invention establishes the state equation and the transfer function of the DC motor according to the equivalent circuit model of th...

Claims

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Application Information

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IPC IPC(8): H02P7/00H02K7/116F16H63/34
CPCH02K7/116H02P7/00
Inventor 梁晨琛罗继涛李育
Owner SHANGHAI AUTOMOBILE GEAR WORKS
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