JPH06312065A - Motor controller for radio control - Google Patents

Abstract

PURPOSE:To provide a motor controller for radio control which can easily vary the set value set by an operator. CONSTITUTION:In a memory part 14, the set value such as the max. electric current value which flows in a drive circuit 12 is memorized, and the set value can be varied by the set signal inputted into a control part 11 from the second input port 21 from the outside equipment. As the outside equipment, can be used one operation channel of a radio control device for controlling a motor controller, and the set value can be varied also through the remote control.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor control device, such as an electric model, which is remotely controlled by a radio control device, which is mounted on a controlled object and remotely controls the rotation of a drive motor of the controlled object.

[0002]

2. Description of the Related Art For example, in a model electric vehicle, model electric boat, etc. which are remotely controlled by a radio control device, the drive motor thereof is generally controlled by a motor control device.

FIG. 2 shows an example of a conventional radio control motor control device. In the figure, reference numeral 1 denotes a receiver, which receives a transmission radio wave output according to an operation amount of an operation stick, an operation switch, etc. of the transmitter, and outputs a motor operation signal formed based on the received signal to a motor control device 2. This is the configuration.

More specifically, the motor controller 2
Has a control unit 3 and a drive circuit 4, and the control unit 3
Then, it is judged whether the motor operation signal is ahead of or behind the reference pulse with respect to the reference pulse, and how much the pulse is deviated from the position of the reference pulse, and the drive signal is output to the drive circuit 4. The drive circuit 4 is configured to actually drive the motor 8 in the normal or reverse direction or apply the brake based on the drive signal. Again 5
Is a current monitor that detects the current flowing in the circuit.

Further, 6a and 6b are setting sections, which are composed of a volume or a switch. The setting unit 6a
Is to set the maximum current value flowing in the circuit in advance. Then, the comparison unit 7 compares the value of the current monitor 5 with the setting value of the setting unit 6a, and the comparison data is fed back to the control unit 3. And the control unit 3
Changes the control signal to the drive circuit 4 based on the comparison data so that the current flowing through the motor control device 2 does not exceed a set value.

On the other hand, as the set value that can be set by the setting unit 6b, in response to the motor operation signal (corresponding to the operation amount of the operation stick or the like of the transmitter), the forward or reverse rotation of the motor or the braking There are neutral data for controlling the switching position, high-point data for controlling the position where the motor output is maximum with respect to the operation position of the operation unit of the transmitter, and the like. In addition, the motor control device 2 and the motor 8 are connected to an operating or driving power source.

The reason why the maximum current value flowing in the circuit is originally defined is to protect the circuit from a short circuit of the load due to an excessive current supply and an overload. In addition to this, the setting unit 6a allows the maximum current value to be changed, so that it is used for the following purposes.

[0008] For example, when the controlled object is a model electric vehicle,
By suppressing the current value flowing in the motor control device and consequently suppressing the current value flowing in the motor 8, the traveling time can be lengthened, or the torque of the motor 8 can be adjusted by adjusting the current value. . In the case of model electric vehicles, especially when racing, the motor to be used, the state of the suspension, the grip force of the tire, etc. are changed depending on the course to be driven, but the torque of the motor to be used is the same as these adjusting elements. Changing is common practice.

[0009]

By the way, in the conventional motor control device 2 for radio control, the setting section 6 is incorporated in the motor control device 2 as described above,
In order to change this set value, it is necessary to collect the controlled object (for example, a model electric vehicle) and change the set value. Especially for a set value that must be adjusted according to the driving conditions, such as the maximum current value, in order to obtain the optimum set value, you must repeat the work of actually operating and checking, and if bad, readjusting. There was a problem that it had to be. In addition, it is not possible to confirm what the setting value of the setting unit 6 is, and for example, when setting the maximum current value, it is necessary to make adjustments while checking with a tester or the like, and the adjustment work is troublesome. There was a problem.

The present invention has been made in view of the above-mentioned problems, and adjustment work is easy, and even remote control is possible.
An object of the present invention is to provide a radio control motor control device capable of changing a set value set inside.

[0011]

The structure of the present invention is mounted on a controlled object operated by remote control, receives transmission data from a transmitter by a receiver, and rotates a motor based on the received signal. In a motor control device for radio control that controls a storage unit that stores a setting value that can be set by an operator, and a control that outputs a drive signal based on the motor operation signal input from the receiver and the setting value of the storage unit. Section and a drive circuit that drives a motor based on an output signal from the control section, the control section includes a first input port to which a motor operation signal from the receiver is input, and an external device. And a second input port connected to the input port for inputting a setting signal for changing the setting value of the storage section. Further, the external device is a receiver, and a setting signal is output from the receiver based on transmission data from the transmitter, and a setting value in the storage unit is changed by remote control. Further, the storage unit is characterized in that at least a set value for controlling the maximum current flowing through the motor control device is stored.

[0012]

With the configuration as described above, it is possible to connect an external device to the second input port and use the external device to change the set value in the storage section. Further, by using a transmitter as an external device and operating a channel that is not particularly necessary for remotely controlling the controlled object, the set value can be changed by remote control via the receiver.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.
FIG. 1 shows an example of a motor control device for radio control according to the present invention. In the figure, 10 is a motor control device, which includes a control unit 11, a drive circuit 12 for driving a motor (not shown), a current monitor 13 for detecting a current flowing through the drive circuit 12, and a storage unit 14 for storing set value data.
have.

The motor control device 10 also has a control power supply circuit 15 of the control unit 11 and a switch 16 for changing the set value data stored in the storage unit 14. Further, 17 is an output buffer, and 18 and 19 are input buffers. In addition, a first input port 20 and a second input port 21 are connected to the input buffers 18 and 19, respectively. In addition, the drive circuit 12
It has an input port 22 connected to the + side of a motor and a driving battery (not shown), and an output port 23 connected to the-side of the motor. Further, the negative side of the battery is connected to the input port 24 and grounded to the ground.

The drive circuit 12 has an F for normal rotation.
ET and a brake FET are provided, and these are switched based on a control signal from the control unit 11 to drive the motor in the forward rotation, or both terminals of the motor are short-circuited to apply the brake. The storage unit 14 is composed of a RAM that erases the stored data when the power is turned off, and an EEPROM that allows the stored data to be rewritten a certain number of times.

The EEPROM controls the forward rotation of the motor and the switching position of the brake in response to the maximum current value flowing in the drive circuit and the motor operation signal (corresponding to the operation position of the operation stick of the transmitter) as set values. Neutral data, high-point data that controls the position where the motor output reaches the maximum value with respect to the operating position of the transmitter, and brake data that controls the operating characteristics of the brake with respect to the operating position of the transmitter are stored. And RA of the storage unit 14
M stores the set value while referring to the data in the EEPROM, and outputs the data to the control unit 11.

Next, the control of the motor will be specifically described. First, a receiver (not shown) receives a transmission radio wave output from the transmitter, and a motor operation signal is input from the receiver to the control unit 11 via the input port 21. Control unit 1
In No. 1, the set value set in the storage unit 14 is referred to, and a pulse signal is output to the drive circuit 12 as a control signal.

In response to this, in the drive circuit 12, if the control signal is a signal for forward rotation, the FE for forward rotation is used.
The gate of T is switched to apply a pulse voltage to a motor (not shown) to drive the motor in a pulsed manner. The output of the motor is changed by changing the pulse width to be driven according to the control signal.

When the brake is operated, the forward FET is turned off, and the pulse signal as the control signal is input to the gate of the brake FET, so that the braking state and the free state are set. Switch.
The braking force is adjusted by changing the pulse width of the control signal to change the braking time.

In addition, the current monitor 13 detects the value of the current flowing through the drive circuit 12 and sends it to the controller 11. The control unit 11 controls the pulse width of the control signal by comparing with the maximum current value stored in the storage unit 14 to control the current flowing through the drive circuit 12.

Next, changing the set value in the storage unit 14 will be described. The set value stored in the storage unit 14 is set using the motor operation signal input via the first input port 20, and the external device connected via the second input port 21. There are things that can be set by.

For example, when changing the neutral position of the operation stick of the transmitter, the operation stick is operated to the position to be changed in advance, and the motor operation signal output from the receiver in response to this is input first. Port 2
Input from 0 to the motor control device 10. In that state, the switch 16 is operated to change its position as neutral data.

Similarly, the high point data and the brake data can be changed by the switch 16 using a motor operation signal. In this case, the contents of the EEPROM of the storage unit 14 are changed. Further, the maximum current value of the set value is configured such that the maximum current value can be changed by an external device connected via the second input port 21.

Next, a case where the maximum current value among the set values stored in the storage unit 14 is changed by using an external device will be described. . In this embodiment, an example in which a radio control device is used as an external device will be shown. Normally, when using a radio control device to remotely control a model electric vehicle, for example, the operation channel required for operation is a steering channel (1st channel) for changing the direction of the vehicle.
It is sufficient if there are two channels, that is, a channel (second channel) for controlling the motor for controlling the motor by controlling the motor control device 10, but in addition to this, another operation channel (for changing the set value) A radio control device having a third channel) is used.

The maximum current value can be changed by changing the second input port 2
The third channel (not shown) of the receiver is attached to 1. By operating the third channel of the transmitter (not shown), the setting signal (pulse signal) obtained is
The control unit 11 determines how long before the output or how late it is output, and the maximum current value stored in the RAM of the storage unit 14 is set to, for example, a prescribed value of 100 according to a setting signal. % To 50% position. In this case, the setting signal from the third channel is always output to the RAM of the storage unit 14 while the controlled object is being remotely controlled, so the setting value stored in the EEPROM of the storage unit 14 is changed. No need.

Further, even if the operation unit of the third channel of the transmitter is composed of two button switches and can only increase / decrease the operation amount, the control unit 11 sets the setting signal of the third channel of the receiver as the reference. It is also possible to select whether the pulse is before or after the pulse and increase or decrease the maximum current value by, for example, a fixed value with respect to the current set value.

As described above, by using a channel other than the normal operation channel of the transmitter, the maximum current value set in the storage section 14 can be freely changed by remote control. Therefore, for example, when remotely controlling a model electric vehicle, the operator can change the maximum current value while actually driving the electric vehicle.
It is possible to set the torque of the motor controlled by 0 to the optimum set value that meets the running condition with one adjustment work,
This has the effect of making the adjustment work extremely simple.

Even if the operating channel for changing the set value cannot be secured in the radio control device in use, another operating channel, for example, a channel for outputting a motor operating signal, is output from the second input port 21. Can be adjusted by using. In this case, since it is necessary to store the changed set value without erasing it, the motor control device 10 determines that the motor operation signal is not input from the first input port, and operates the switch while operating the operation channel. 16 to operate the EE of the storage unit 14.
Change the setting value of PROM.

In addition, in the previous embodiment, an example in which a radio control device is used as an external device to change the set value in the storage section is shown. However, in the set signal from the receiver, one operation channel can be used. Although only one set value can be changed, serial communication can be performed by using a transmitter or another external device.
More settings stored in M can be changed.

If an external device is used, the type of the controlled object (whether it is a model electric vehicle or an electric boat, or even a model electric vehicle of a road race type or a buggy type) and running conditions are available. It is also possible to store several types of setting values stored in the EEPROM of the storage unit 14 as basic setting values in an external device, and the operator can select the basic setting values as needed. Therefore, if such an external device is used, the work of adjusting the set value can be easily performed.

The set value that can be changed from the second input port via the external device is not limited to the maximum current value, and other set values can be changed. Although the switch is shown as a switch for changing the set value,
It can also be used when selecting a setting value that can be set from an external device. Alternatively, some or all of the setting values may be directly changed by the switch, and some of the setting value data may be changed by the setting signal from the second input port.

[0032]

As described above, the radio control motor control device of the present invention has a configuration in which the setting signal for changing the setting value of the storage unit can be input from the second input port of the control unit via the external device. Therefore, as the external device, it is possible to use a device having various functions for changing the set value, which facilitates the change of the set value.

Further, since the radio control device is used as the external device and the set value of the storage section can be changed by remote control by the operation channel used for other than the basic operation of the controlled object, the controlled value is actually controlled. The set value can be changed while operating the body, and the adjustment work can be performed very easily.

[Brief description of drawings]

FIG. 1 is a block diagram showing a motor control device for radio control according to the present invention.

FIG. 2 is a block diagram showing a conventional motor control device for radio control.

[Explanation of symbols]

 10 motor control device 11 control unit 12 drive circuit 14 storage unit 22 first input port 21 second input port

Claims (3)

[Claims] 1. A radio control motor control device, which is mounted on a controlled object operated by remote control, receives transmission data from a transmitter by a receiver, and controls rotation of a motor based on the reception signal. A storage unit that stores a set value that can be set by an operator, a control unit that outputs a drive signal based on a motor operation signal input from a receiver and a set value of the storage unit, and an output signal from the control unit A drive circuit for driving a motor based on the above, the control unit is connected to a first input port to which a motor operation signal from the receiver is input, and an external device, and a set value of the storage unit. A radio control motor control device having a second input port to which a setting signal to be changed is input. 2. The external device is a receiver, and outputs a setting signal from the receiver based on transmission data from the transmitter, and changes the setting value of the storage unit by remote control. The motor control device for radio control according to claim 1. 3. The radio control motor control according to claim 1, wherein the storage unit stores at least a set value for controlling a maximum current flowing through the motor control device. apparatus.