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control device

A control device and brake technology, applied in the direction of the reduction device of the AC motor, the electric motor/converter plug, etc., can solve the problems of excessive motor flow and time delay, and achieve the effect of a simple structure

Active Publication Date: 2015-12-09
MITSUBISHI ELECTRIC CORP
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  • Description
  • Claims
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Problems solved by technology

[0003] However, in reality, there is a time delay from the output of the brake release signal to the actual operation of the brake. Therefore, if the output frequency is increased simultaneously with the output of the brake release signal, for example, an excessive current may flow through the motor and the inverter may alarm and stop

Method used

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Embodiment approach

[0019] use figure 1 and figure 2 , the control device 100 according to the embodiment will be described. figure 1 is a block diagram showing the configuration of the control device 100 . figure 2 It is a diagram showing the operation timing of the braking process in the speed control operation.

[0020] The control device 100 performs, for example, speed control of the motor M by controlling the motor M and the mechanical brake BR (see figure 2 ). The mechanical brake BR restricts the movement of the motor M.

[0021] Specifically, the control device 100 includes a motor drive unit 10 , a brake drive unit 20 , a detection unit 30 , an extraction unit 40 , a setting unit 50 , and a control unit 60 .

[0022] The motor drive unit 10 receives a control signal from the control unit 60, and drives the motor M in accordance with the control signal. The motor M may be a rotary motor or a linear motor. The motor drive unit 10 may be, for example, an inverter that converts DC...

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Abstract

The invention relates to a control device, which, with a simple structure, is capable of automatically setting the action delay time of a mechanical brake. The control device controls a motor and a mechanical brake which limits the action of the motor. The control device comprises a motor driving part which drives the motor; a brake driving part which enables the mechanical brake to act; a detection part which detects the current when the motor is driven by the motor driving part; an extraction part for extracting a torque component current from the detected current; a setting part, which presumes the action delay time from an action request of the mechanical brake being made to the brake driving part to the mechanical brake actually acting, based on the change in the extracted torque component current over time, and sets the action delay time; and a control part, which controls the action of the mechanical brake performed by the brake driving part and controls the speed of the action of the motor realized by the motor driving part, corresponding to the set action delay time.

Description

technical field [0001] The invention relates to a control device. Background technique [0002] In a motor drive system having a mechanical brake, it takes time to adjust the release / lock time of the brake. Usually, when an inverter device is used, an output frequency or an output current is detected to output a brake release signal. [0003] However, in reality, there is a time delay from the output of the brake release signal to the actual operation of the brake. Therefore, if the output frequency is increased simultaneously with the output of the brake release signal, for example, an excessive current may flow through the motor and the inverter may alarm and stops. In order to avoid the above-mentioned alarm and stop, it is necessary to set the delay time from the output of the brake release signal to the actual release of the brake as a parameter to control the operation of the brake. In order to set this delay time to an appropriate value, the actual operation of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P3/26
Inventor 折原竹九
Owner MITSUBISHI ELECTRIC CORP
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