TWI425326B - Control device - Google Patents

Description

Electronic brake control device

The invention relates to an actuator, in particular to an electronic brake control device, which integrates a limit switch control circuit and an input voltage detection circuit, and has the function of an electronic brake.

As far as conventional technology is concerned, most of the limit switches used in actuators are built-in mechanical limit switches. Specifically, as shown in the first figure, the actuator (1) is subjected to the motor (2). Driving, the actuator (3) is reciprocally displaced in the axial direction, and the reciprocating displacement of the actuating member (3) is controlled by the two mechanical limit switches (4) (5) provided by the positioning. Point position, however, these conventional techniques, because the limit switch (4) (5) is built into the actuator, its position is not adjusted for practical needs, and due to the current system of the drive motor (2) Directly through each limit switch (4) (5), it is easy to cause damage to the switch contact due to excessive current or excessive use, and it is easy to be damaged by the direct switch (4) (5). After that.

In addition, although the prior art has the prior art that the limit switch position can be arbitrarily adjusted as shown in the second figure, these technologies are connected to the limit switch (4 ' ) (5 ' ) and the motor because of the external connection. The circuit of (2 ' ), therefore, on the whole, its installation on the line will cause the external wires of the actuator (1 ' ) to be too complicated, affecting the simplicity of appearance and the safety concerns, and its limit switch (4) ' )(5 ' ) still needs to control the motor (2 ' ) through the additional control circuit (6 ' ), resulting in an increase in the cost of the control unit.

In addition, it is disclosed in the conventional technology that as shown in the third figure, the motor of the actuator (1 " ) and the limit switch control circuit (7 " ) are inherently lacking in voltage detection function, and an external use is required. The control circuit (8 " ) is used for voltage detection. Due to the low reliability of voltage detection and control, the speed of the actuator (1 " ) is too fast due to excessive voltage. Under the use, the actuator (3 " ) is easily damaged by the predetermined stroke, and the actuator (3 " ) moves too slowly due to insufficient voltage, so the motor is easy to use under long-term use. " ) Overheating and damage to parts.

Therefore, in view of the problems existing in the above-mentioned conventional structure, how to develop an innovative structure that is more ideal and practical, the consumers are eagerly awaiting, and the relevant industry must strive to develop the goal and direction of breakthrough.

In view of this, the inventor has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the inventor has finally obtained the practical invention.

Therefore, the main object of the present invention is to provide an electronic brake control device which has both a limit switch control unit and a voltage detection control unit, and can be applied to an actuator to simplify the appearance of the actuator and improve Control the reliability and avoid the derivation of the aforementioned abuse.

Therefore, in order to achieve the above object, the electronic brake control device provided by the present invention comprises a voltage detecting unit and a limit switch control unit, and integrates the limit switch control circuit and the input voltage detecting circuit. And implemented on the actuator, no additional control circuit is required to control the limit switch and detect the input voltage range. According to this, the limit switch is used to limit the stroke without causing the mechanism collision, and the detection input voltage range is used to control The actuator is actuated, and the mechanism is not damaged because the input voltage is too low or too high, and the switch position can be adjusted arbitrarily to avoid large current flowing through the limit switch, so the switch contact is not easily damaged and the life is increased. Moreover, the electronic brake control device can reduce the external wiring of the actuator, reduce the trouble of the whole line, and reduce the cost without adding a control circuit. And it has the function of electronic brakes.

Hereinafter, two preferred embodiments of the present invention will be further described with reference to the drawings, wherein:

The fourth figure is a schematic diagram of a line configuration of an embodiment of the present invention.

The fifth figure is a schematic diagram of the configuration of a normally open limit switch and a voltage detection control circuit according to a preferred embodiment of the present invention.

Figure 6 is a block diagram showing the configuration of a normally open limit switch and a voltage detection control circuit in accordance with a preferred embodiment of the present invention.

FIG. 7 is a schematic diagram showing the configuration of a normally closed limit switch and a voltage detection control circuit according to another preferred embodiment of the present invention.

Figure 8 is a block diagram showing the configuration of a normally closed limit switch and a voltage detecting control circuit according to another preferred embodiment of the present invention.

First, referring to the fourth figure, the electronic brake control device (10) provided in a preferred embodiment of the present invention mainly integrates the limit switch control circuit and the input voltage detection circuit, and provides The actuator (90) is used, more specifically, the electronic brake control device (10) is built into the interior of the actuator (90) to reduce the externality of the actuator (90). The number of wires, without the need to additionally configure an external control circuit for the control of the limit switch and the detection input voltage range, to achieve the simplification of the wiring.

Referring to the fifth and sixth figures, the electronic brake control device (10) provided in a preferred embodiment of the present invention comprises a voltage detecting unit (20) and a limit switch control unit (30). The voltage detecting unit (20) has a low voltage input detecting comparator (21), is connected to the voltage input source (22) and detects the input DC voltage, and is detected by the low voltage input. Comparator (21) controls The first low power switch (23) is configured to control whether a relay (24) is activated or not, and when the low voltage input detection comparator (21) detects that the input DC voltage value is higher than the set low voltage At a preset value, the relay (24) is actuated via the first low power switch (23), and the input current drives the motor (91) of the actuator (90); and, a high voltage The input detection comparator (25) is connected to and detects the voltage input source (22), and the second low power switch (26) controlled by the high voltage input detection comparator (25) is used to control Whether the first low-power switch (23) is turned on or off, that is, when the high-voltage input detection comparator (25) detects the input source (22), the DC voltage is higher than the set high voltage preset value. The first low power switch (23) is controlled via the second low power switch (26) to cut off the path state of the connected relay (24) to reach the motor of the actuator (90) (91). The state of power failure.

The limit switch control unit (30) has a normal open circuit lower limit switch (31), which is connected to control a first optical coupler (32), and the first optical coupler (32) is connected to control the first A low power switch (23) is turned on or off, a normal open circuit upper limit switch (33) is connected to control a second optical coupler (34), and the second optical coupler (34) is connected to control the first The low power switch (23) is turned on or off, thereby integrating to form an electronic brake control device.

With the above unit:

When the voltage input by the voltage input source (22) is lower than the set value of the low voltage input detection comparator (21), the first low power switch (23) is not turned on, so that the relay (24) is not activated. At this time, the motor (91) of the actuator (90) is incapable of operating due to the supply of current.

When the voltage input by the voltage input source (22) is higher than the set value of the low voltage input detection comparator (21), the first low power switch (23) is turned on, so that the relay (24) is also activated. At this time, the motor (91) of the actuator (90) is actuated.

When the voltage input by the voltage input source (22) is higher than the set value of the low voltage input detection comparator (21), and the actuator displacement of the actuator (90) reaches the upper limit switch (33) , the upper limit switch (33) is turned on, and the second photocoupler (34) is turned on, causing the first low power switch (23) to be non-conductive, and the relay (24) is thus not actuated. The motor (91) of the actuator (90) stops acting; otherwise, when the actuator of the actuator (90) reaches the lower limit switch (31), the first optical coupling switch (32) is turned on. When the first low power switch (23) is not turned on, the relay (24) is not actuated, and the motor (91) of the actuator (90) is also stopped.

When the voltage input by the voltage input source (22) is higher than the set value of the high voltage input detection comparator (25), the second low power switch (26) is turned on, and the first low power switch is caused ( 23) Not conducting, so that the relay (24) is not actuated, and the motor (91) of the actuator (90) is also stopped.

Referring to the seventh and eighth figures, the electronic brake control device (10 ' ) provided in another preferred embodiment of the present invention is substantially the same as the previous embodiment, and the difference is different. In this embodiment, the lower limit switch (31 ' ) (33 ' ) is normally short-circuited. In this embodiment, the embodiment is different from the previous embodiment in that:

When the voltage input by the voltage input source (22 ' ) is lower than the set value of the low voltage input detection comparator (21 ' ), the first low power switch (23 ' ) is not turned on, so that the relay (24 ' ) nor actuated meantime, the actuator (90 ') of the motor (91'), i.e., the current supply is under operation can not.

When the voltage input by the voltage input source (22 ' ) is higher than the set value of the low voltage input detection comparator (21 ' ), the first low power switch (23 ' ) is turned on, so that the relay (24 ' ) thus also actuated at this time, 'the motor (of 91) of the actuator (90') that is actuated.

When the voltage input source (22 ' ) inputs a voltage higher than the set value of the low voltage input detection comparator (21 ' ), and the actuator displacement of the actuator (90 ' ) reaches the upper limit switch ( 33 ' ), the upper limit switch (33 ' ) is disconnected, and the second optical coupler (34 ' ) is not turned on, causing the first low power switch (23 ' ) to be non-conducting, so that the relay ( 24 ' ) is thus not actuated, at which point the motor (91 ' ) of the actuator (90 ' ) stops acting; otherwise, when the actuator of the actuator (90 ' ) reaches the lower limit switch (31) ' ), the first optical coupling switch (32 ' ) is rendered non-conducting, and the first low power switch (23 ' ) is rendered non-conducting, causing the relay (24 ' ) to be inactive, and the actuation is performed The motor (91 ' ) of the device (90 ' ) also stops operating.

When the voltage input by the voltage input source (22 ' ) is higher than the set value of the high voltage input detection comparator (25 ' ), the second low power switch (26 ' ) is turned on, and the first low is caused. The power switch (23 ' ) is not turned on, so that the relay (24 ' ) is not actuated, and the motor (91 ' ) of the actuator (90 ' ) is also stopped.

In summary, the electronic brake control device provided by the present invention has at least the following functions as compared with the conventional technology:

The electronic brake control device is built in the inside of the actuator, and only the positive and negative power supply wires of the motor are exposed, and no additional control circuit is needed to control the limit switch and the detection input voltage range, thereby limiting the limit switch. Stroke, without causing the mechanism to collide, using the detection input voltage range to control the actuator to operate, without damage to the mechanism or motor due to the input voltage being too low or too high, the switch position can be adjusted arbitrarily, and no A large current flows, so the switch contacts are not easily damaged and the life is increased. And the external wiring is less, reducing the trouble of the whole line, and eliminating the need for additional control circuit to reduce the cost. And it has the function of electronic brakes.

The limit switch position of the present invention can be arbitrarily adjusted, and no large current flows through the limit switch, so the limit switch contact is not easily damaged and the life is increased.

The external wiring of the invention is less, the whole line is reduced, and the cost can be reduced without adding a control circuit.

The mechanism of the invention does not hit the aircraft, which can increase the life of the mechanism.

The invention has an electronic brake function.

The present invention can be applied to an actuator in which the limit switch is mounted externally.

The limit switch circuit of the invention does not need to be connected to the control unit, which can reduce the external wiring material and avoid the trouble of the whole line.

The invention is applicable to detecting an input voltage range and controlling the starting and stopping of the actuator.

The invention does not need an external control unit and the parts are reduced, which can reduce the cost.

The present invention has been described with reference to the preferred embodiments of the present invention. However, those skilled in the art can change and modify the present invention without departing from the spirit and scope of the invention. Such changes and modifications shall be covered in the scope defined by the following patent application.

(1) (1 ' ) (1 " ) ‧ ‧ actuator

(2) (2 ' ) (2 " ) ‧ ‧ motor

(3) (3 " ) ‧ ‧ actuating parts

(4)(4 ' )(5)(5 ' )‧‧‧ Limit switch

(6 ' )‧‧‧Control circuit

(7 " ) ‧ ‧ limit switch control circuit

(8 " ) ‧‧‧ external control circuit

(10)(10 ' )‧‧‧Electronic brake control device

(20)‧‧‧Voltage detection unit

(21)(21 ' )‧‧‧Low Voltage Input Detection Comparator

(22)(22 ' )‧‧‧Voltage input source

(23)(23 ' )‧‧‧First low power switch

(24) (24 ' ) ‧ ‧ relay

(25)(25 ' )‧‧‧High Voltage Input Detection Comparator

(26) (26 ' ) ‧ ‧ second low power switch

(30) ‧‧‧limit switch control unit

(31) (31 ' ) ‧ ‧   limit switch under normal open circuit

(32) (32 ' )‧‧‧First Optocoupler

(33) (33 ' ) ‧‧‧Normal open circuit upper limit switch

(34) (34 ' ) ‧‧‧Second optocoupler

(90) (90 ' ) ‧ ‧ actuator

(91) (91 ' ) ‧ ‧ motor

First: A cross-sectional view of a conventional built-in limit switch actuator.

Second figure: is a circuit diagram of another conventional actuator circuit.

Figure 3: Another conventional actuator circuit configuration diagram.

Fourth Figure: A schematic diagram of a line configuration of an embodiment of the present invention.

Fig. 5 is a schematic view showing the configuration of a normally open limit switch and a voltage detecting control circuit of an example of the present invention.

Fig. 6 is a schematic diagram showing the configuration of a normally open limit switch and a voltage detecting control circuit of an example of the present invention.

Figure 7 is a schematic diagram showing the configuration of a normally closed limit switch and a voltage detection control circuit according to another example of the present invention.

Eighth: A schematic diagram of a configuration of a normally closed limit switch and a voltage detection control circuit according to another example of the present invention.

(10)‧‧‧Electronic brake control device

(20)‧‧‧Voltage detection unit

(21)‧‧‧Low Voltage Input Detection Comparator

(22)‧‧‧Voltage input source

(23)‧‧‧First low power switch

(24)‧‧‧Relay

(25)‧‧‧High voltage input detection comparator

(26)‧‧‧Second low power switch

(30) ‧‧‧limit switch control unit

(31) ‧‧‧Normal switch under limit switch

(32)‧‧‧First Optocoupler

(33) ‧‧‧Normal open circuit upper limit switch

(34)‧‧‧Second optocoupler

(90) ‧‧‧Actuator

(91)‧‧‧Motor

Claims (3)

An electronic brake control device includes: a voltage detection unit having a low voltage input detection comparator connected to a DC voltage for detecting input, and a first low power switch being compared with the low voltage input detection Connected to and controlled by the switch, or a relay connected to the first low power switch and controlled or actuated to control the actuator motor to actuate or stop acting, a high voltage The input detection comparator is connected to the DC voltage of the detection input, and the second low power switch is connected to the high voltage input detection comparator, and is controlled to be turned on or off, and is connected by the second low power switch. Controlling whether the first low power switch is turned on or not to control whether the relay is actuated or not; and a limit switch control unit having a lower limit switch, a first optical coupling coupled to and controlled by the lower limit switch Connected to control whether the first low power switch is turned on or off, an upper limit switch, and a second optical coupler connected to and controlled by the upper limit switch The first low system power switch is turned on or not; thereby integrally constituting the integrating an electronic brake control unit. The electronic brake control device according to claim 1, wherein each of the upper and lower limit opening relationships is a normal disconnector. The electronic brake control device according to claim 1, wherein each of the upper and lower limit opening relationships is a normal short circuit.