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Multifunctional timer

A timer and multi-functional technology, applied in the direction of instruments, simulators, computer control, etc., can solve the problems of single timer function, single counting and timing of timer function, etc.

Inactive Publication Date: 2019-09-17
HUADA SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the mainstream timers on the market have a single function. For example, the existing timers have a single function for counting and timing or for generating pulse width modulation signals (PWM signals).

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 2

[0121] The operation of PWM output dead zone timer mode (PCR:WMD[1:0]=01) is as follows:

[0122] In the dead-timer mode, the non-overlapping PWM(1) and PWM(0) output signals are generated according to the previous stage OP(1) signal and the dead-time set by the registers PDA and PDB respectively.

[0123] The dead-band timer mode stipulates that the compare output generates an internal signal OP(1) whose active level is high. In this mode, setting PFR register and OP(0) signal are invalid.

[0124] When the mode is set to the dead-time timer mode by rewriting the PCR:WMD[1:0] register, the polarity of the output signal PWM(0) is the same as that of OP1, and the polarity of the output signal PWM(1) is opposite to that of OP1.

[0125] If the rising edge of the signal OP(1) is detected, the PWM(1) output becomes low level; the dead zone counter loads the set value of the PDB register and starts counting down. When the count value becomes 0x0000, the counter stops and the PWM ...

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Abstract

The invention relates to a multifunctional timer, which is used for motor control. The multifunctional timer comprises a counter and a PWM trigger connected with the counter, wherein the PWM trigger comprises at least one pwm comparison generation module. Each pwm comparison generation module comprises: a comparison controller connected with the counter; a filter clock generator, a reference value set register, a comparison output module a counting register which take output of the comparison controller as input; a digital filter by taking output of the filter clock generator and the comparison output module as input; a dead zone controller by taking output of the comparison output module and the digital filter as input; and a multiplexer by taking the output of the comparison output module and the dead zone controller as input.

Description

technical field [0001] The invention relates to a multi-function timer (MFT), which is mainly used for a high-precision and stable control module of a three-phase motor. In particular, it relates to a multi-function timer, which can provide a variety of motor control solutions for different applications by combining an A / D converter (ADC) module. In addition, the motor control emergency input (EMI) of the multi-function timer can be used to stop the motor drive in an emergency, thereby realizing protection of the motor, such as overcurrent protection. Background technique [0002] At present, the mainstream timers on the market have relatively single functions. For example, the existing timers have only single functions for counting and timing or for generating pulse width modulation signals (PWM signals). The inventor of the present application makes the timer have multiple functions by improving the structure of the timer. Not only that, by adding a digital filter to fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257H02P23/00
Inventor 魏寿强
Owner HUADA SEMICON CO LTD
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