CN104483569A - Resolver demodulation module performance tester - Google Patents

Abstract

The invention relates to a resolver demodulation module performance tester. The resolver demodulation module performance tester comprises a master control chip DSP (Digital Signal Processor), a digital-to-analog converter, a resolver demodulation module, an excitation power supply and a test interface; the master control chip DSP mainly implements the analog output of an angle and reads an angle value demodulated by the resolver demodulation module; the digital-to-analog converter converts the analog angle digital transmitted by the master control chip DSP into an analog quantity, simulating an analog signal outputted by a resolver; the resolver demodulation module is a tested object; the excitation power supply supplies electricity to the resolver demodulation module; the related information in the master control chip DSP is fed back onto the test interface through serial ports, the difference between the input angle and output angle of the master control chip DSP represents the demodulation precision of the resolver demodulation module, and the time difference between the input angle and output angle of the master control chip DSP represents the response speed of the resolver demodulation module. The resolver demodulation module performance tester can accurately test the test precision and response speed of the resolver demodulation module.

Description

A kind of rotary transformer demodulation module performance testing device

Technical field

The invention belongs to module performance field tests, particularly a kind of performance testing device of rotary transformer demodulation module, be applicable to servomechanism and use.

Background technology

Use rotary transformer demodulation module for demodulation positional information in a lot of intermediate item at present, but the performance for himself is not generally tested, thus go wrong in the project and the failure problems of rotary transformer demodulation module cannot be got rid of, and himself likely cause system unstable.

Summary of the invention

In order to the shortcoming overcoming prior art the invention provides a kind of rotary transformer demodulation module performance testing device, it accurately can test measuring accuracy and the reaction velocity of rotary transformer demodulation module.

The present invention solves the technical scheme that prior art problem takes: comprising:

Control master chip DSP: the angle value that the modulating output mainly realizing angle demodulates with reading rotary transformer demodulation module;

Digital to analog converter: the analog angle digital quantity that DSP transmits is converted to analog quantity, the simulating signal amount that simulation rotary transformer exports;

Rotary transformer demodulation module: be tested object;

Excitation power supply: power to rotary transformer demodulation module;

Test interface: pass through serial interface, to the inner relevant information feed back of main core DSP be controlled to interface so that observe, information spinner on interface will comprise the angle value controlling main core DSP feeding rotary transformer demodulation module, rotary transformer demodulation module feeds back to the angle value controlling main core DSP, control main core DSP constrained input differential seat angle, control the mistiming of main core DSP constrained input angle, control the demodulation accuracy that main core DSP constrained input differential seat angle represents rotary transformer demodulation module, the mistiming controlling main core DSP constrained input angle represents the reaction velocity of rotary transformer demodulation module.

The present invention is simple, accurately can test measuring accuracy and the reaction velocity of rotary transformer demodulation module.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, the present invention will be further described.

Fig. 1 is calcspar of the present invention.

Embodiment

As shown in Figure 1, the present invention includes:

Control master chip DSP: the angle value that the modulating output mainly realizing angle demodulates with reading rotary transformer demodulation module.

Digital to analog converter: the analog angle digital quantity controlling main core DSP transmission is converted to analog quantity, the simulating signal amount that simulation rotary transformer exports.

Rotary transformer demodulation module: be tested object.

Excitation power supply: power to rotary transformer demodulation module.

Test interface: by serial interface, will control the inner relevant information feed back of main core DSP to interface so that observe.Information spinner on interface will comprise and controls that main core DSP sends into the angle value of rotary transformer demodulation module, rotary transformer demodulation module feeds back to the angle value controlling main core DSP, the mistiming controlling main core DSP constrained input differential seat angle, control main core DSP constrained input angle.Control the demodulation accuracy that main core DSP constrained input differential seat angle represents rotary transformer demodulation module, the mistiming controlling main core DSP constrained input angle represents the reaction velocity of rotary transformer demodulation module.

Control the angle sine signal waveform that master chip DSP is fed back by process simulation rotary transformer, sine wave is sent into digital to analog converter, the angle signal of simulation needed for rotary transformer is as the input of rotary transformer demodulation module, then the angle output valve of rotary transformer demodulation module is read by controlling main core DSP, by control main core DSP export angle with read the measuring accuracy that angle contrast can draw this demodulation module, this module reaction velocity can be drawn by the contrast of readout time and write time, and can intuitively be presented on test interface.

Claims (1)

1. a rotary transformer demodulation module performance testing device, is characterized in that: comprising:

Control master chip DSP: the angle value that the modulating output mainly realizing angle demodulates with reading rotary transformer demodulation module;

Digital to analog converter: the analog angle digital quantity controlling main core DSP transmission is converted to analog quantity, the simulating signal amount that simulation rotary transformer exports;

Rotary transformer demodulation module: be tested object;

Excitation power supply: power to rotary transformer demodulation module;

Test interface: by serial interface, will control the inner relevant information feed back of main core DSP to interface so that observe.Information spinner on interface will comprise and controls that main core DSP sends into the angle value of rotary transformer demodulation module, rotary transformer demodulation module feeds back to the angle value controlling main core DSP, the mistiming controlling main core DSP constrained input differential seat angle, control main core DSP constrained input angle.Control the demodulation accuracy that main core DSP constrained input differential seat angle represents rotary transformer demodulation module, the mistiming controlling main core DSP constrained input angle represents the reaction velocity of rotary transformer demodulation module.