Rotary transformer type steering angle sensor of electric automobile and detection method thereof

A resolver, steering angle technology, applied in steering mechanism, vehicle parts, transportation and packaging, etc., to achieve the effect of high sampling accuracy, fast response speed and simple structure

Active Publication Date: 2013-08-21
ANHUI ANKAI AUTOMOBILE
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problems existing in the existing steering angle sensor, the present invention provides a resolver-type steering angle sensor of an electric vehicle and its detection method, which is used to detect the steering wh

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  • Rotary transformer type steering angle sensor of electric automobile and detection method thereof
  • Rotary transformer type steering angle sensor of electric automobile and detection method thereof

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Embodiment Construction

[0033] Such as figure 1 As shown, a rotary transformer steering angle sensor 1 of an electric vehicle includes a rotary transformer 1-1, and the voltage output terminals of the rotary transformer 1-1 pass through the first signal conditioner 1-2 and the second signal conditioner respectively. 1-3 is electrically connected to the resolver decoder 1-4, and the resolver decoder 1-4 is electrically connected to the microprocessor 1-5 interactively, and the voltage input terminal of the resolver 1-1 is connected to the excitation voltage generating The regulator 1-10 is electrically connected, the input terminal of the excitation regulator 1-10 is electrically connected to the driver 1-9, and the output terminal of the resolver decoder 1-4 is connected to the driver 1-9; the driver 1-9 The input end is connected with a DC / DC converter 1-8.

[0034] Further, the output terminals of the microprocessor 1-5 are respectively connected with a status indicator light 1-6 for indicating i...

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Abstract

The invention discloses a rotary transformer type steering angle sensor of an electric automobile. The rotary transformer type steering angle sensor comprises a rotary transformer, a resolver signal decoder, a microprocessor and a signal conditioning circuit. A voltage output end of the rotary transformer is electrically connected with the microprocessor through the resolver signal decoder, a voltage input end of the rotary transformer is electrically connected with an excitation regulator producing exciting voltage, an input end of the of the excitation regulator is electrically connected with a driver, and an output end of a resolver digital converter is connected with the driver. The invention further discloses a method for detecting the steering angle of a steering wheel by using the rotary transformer type steering angle sensor. According to the method, when a steering engine of the steering wheel rotates, a rotating shaft of the steering engine drives a rotor of the rotary transformer to shift synchronously, voltage changed correspondingly can be produced on a stator winding of the rotary transformer, data decoding is carried out on a voltage signal through the resolver decoder, then the voltage signal is transmitted to the microprocessor, a collected angle signal is transmitted to an automobile control system to adjust the torque output ratio between two wheels of a rear axle, and therefore stable steering of vehicles can be achieved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a resolver-type steering angle sensor of an electric automobile and a detection method thereof. Background technique [0002] In the wheel drive electric bus, a drive motor is placed on the left and right rear axle sides respectively to realize the direct drive of the two rear wheels. The electric bus using the wheel drive system can make the frame near the wheels very low, so that the space can be effectively used, and it has the advantages of reducing the weight of the vehicle, but it also brings the electronic differential speed and braking force of the wheel drive axle. control, traction control, wheel drive safety and other new technical challenges. When the vehicle is turning, the output torque distribution of the left and right rear axles is distributed according to the current steering angle, vehicle speed and other factors. Therefore, the steering wheel angle sensor...

Claims

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Application Information

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IPC IPC(8): B62D15/02
Inventor 吴成加洪洋熊良平陈顺东丁传记李韧周保成唐伟
Owner ANHUI ANKAI AUTOMOBILE
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