Step electric machine controlling device and electronic clock

Step electric machine controlling device and electronic clock

  • CN 1,534,861 A
  • Filed: 02/24/2004
  • Published: 10/06/2004
  • Est. Priority Date: 02/24/2003
  • Status: Active Grant
First Claim
Patent Images

1. stepper motor control appliance, it comprises:

  • First and second switch elements that are one another in series;

    Third and fourth switch element that is one another in series;

    The coil of stepper motor, it is connected between the node of the node of first and second switch elements and third and fourth switch element;

    First serial circuit, it comprises five switch element in parallel with first switch element and first detecting element;

    Second serial circuit, it comprises six switch element in parallel with the 3rd switch element and second detecting element;

    Control device, it is in response to a driving pulse, the conduction and cut-off operation of control first to the 4th switch element, drive this stepper motor rotatably to allow electric current in coil, to flow, this control device also detects control impuls in response to a rotation, control the conduction and cut-off operation of the 4th, the 3rd, the 5th and the 6th switch element, this rotation detection control impuls after driving stepper motor rotatably in the back to back rotation sense cycle according to this driving pulse, finish and providing immediately after driving pulse is provided;

    And a checkout gear, it detects stepper motor and exist/does not have rotation based on the comparative result of a voltage that produces between first and second detecting elements and coil and a given threshold voltage;

    Wherein by driving rotatably under the situation of stepper motor according to driving pulse conducting first and the 4th switch element, control device conducting the 4th and the 5th switch element, and in the conduction and cut-off operation of finishing in the first given cycle that is right after after driving pulse is provided with given FREQUENCY CONTROL the 3rd switch element, this control device is conducting the 3rd switch element and the 6th switch element also, and operate with the conduction and cut-off of given FREQUENCY CONTROL the 4th switch element in second period demand of first period demand after the past;

    Driving rotatably under the situation of stepper motor by opening the second and the 3rd switch element according to driving pulse, control device conducting the 3rd and the 6th switch element, and in the conduction and cut-off operation of finishing in the first given cycle that is right after after driving pulse is provided with given FREQUENCY CONTROL the 4th switch element, this control device is conducting the 4th switch element and the 5th switch element in second given cycle also, and with the conduction and cut-off operation of given FREQUENCY CONTROL the 3rd switch element; and

    When the 5th switch element conducting, this checkout gear is based on the comparative result of voltage that produces between first detecting element and coil and threshold voltage, detect stepper motor and exist/do not have rotation, and when the 6th switch element conducting, this checkout gear detects stepper motor and exist/does not have rotation based on the comparative result of voltage that produces between second detecting element and coil and threshold voltage.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×