RU122631U1 - ELECTRICAL POWER STEERING VEHICLE STEERING DEVICE - Google Patents

Abstract

A device for steering a vehicle with an electromechanical amplifier, including a reverse unit (6) of an asynchronous executive motor, a vehicle speed sensor (17), a generator (10) of the control law of an asynchronous executive motor, an onboard power supply (12), a setpoint (14) current limiting, as well as a series-connected torque sensor (2), a control voltage generator (11), a controlled master oscillator (9), a three-phase integral distributor (8) of pulses, a voltage regulator (7) on the windings of an asynchronous executive motor, a frequency-pulse modulator (16), a comparator (15), an asynchronous executive motor (3), the shaft of which is connected through a gearbox (18) to the steering mechanism (4), while a vehicle speed sensor (17) is connected to a controlled master generator (9) and generator (10) of the control law of the executive asynchronous motor, and with the block (6) reverse execution a power three-phase transistor inverter (5), a voltage regulator (7) on the windings of an asynchronous executive motor and a control voltage generator (11), and the on-board power supply (12) is connected to the sensor (13) of the current consumed by the system, and the setpoint ( 14) the current limiting is connected to the comparator (15), in addition, the torque sensor (2) is installed on the steering wheel (1) and is connected to the asynchronous executive motor (3) through the gearbox (18).

Description

Technical field

The utility model relates to mechanical steering of a vehicle with an electric amplifier and can be used in cross-country vehicles, operating mainly in shunting modes.

State of the art

It is known that a vehicle steering wheel comprising a steering wheel kinematically connected through a torque sensor and a steering shaft with a steering mechanism kinematically connected to the steered wheels, a motor kinematically connected to the steering shaft, a power amplifier, an adder, a threshold adjuster, is selected as the closest analogue values of the speed of movement, connected to the first input of the comparator, the speed sensor, connected to the second input of the comparator, a switch, the first input of which is connected nen with the output of the comparator, and the output with an electric motor, characterized in that it is equipped with a current sensor, blocks for converting the signals of the torque sensor and current sensor, the first and second logic blocks, the first and second controllers, and the output of the power amplifier is connected to the second input of the switch through a current sensor, the output of which is connected to the input of the current sensor signal conversion unit, the input of the power amplifier is connected to the output of the first logic unit, the input of which is connected to the output of the adder, the output of the second controller is connected to the first the input of the second logic unit, the output of which is connected to the first input of the first controller, the output of the torque sensor - with the input of the signal conversion unit of the torque sensor, the output of which is connected to the second inputs of the first controller and the second logic unit and the input of the second controller, the output of the first controller - with the first input an adder, the second input of which is connected to the output of the current sensor signal conversion unit (RF patent for the invention No. 2157327).

A disadvantage of the known steering is the use in it as an executive DC motor with independent excitation with its inherent main drawback is the presence of a brush-collector assembly. This disadvantage inherent in this type of engine in general is especially evident in the electric power steering, since in it it constantly works in transient processes of starting and stopping (braking).

Utility Model Disclosure

The technical result that can be obtained in the claimed utility model is the creation of a device for steering a vehicle with an electromechanical amplifier, which will eliminate the above drawback.

A device for steering a vehicle with an electromechanical amplifier, including a reversing unit of an executive asynchronous motor, a vehicle speed sensor, a driver of the control law of the executive asynchronous motor, an on-board power supply, a current limiting controller, and a serially connected torque sensor, a control voltage generator controlled master oscillator, three-phase integrated pulse distributor, voltage regulator for winding ax of the asynchronous motor, pulse frequency modulator, comparator, asynchronous motor, the shaft of which is connected to the steering gear, while the vehicle speed sensor and the driver of the actuator of the actuator of the asynchronous motor are connected to the controlled master oscillator, and the asynchronous actuator is reversed by block 6 the motor is connected by a power three-phase transistor inverter, a voltage regulator on the windings of the executive asynchronous motor and control voltage balancer, wherein the on-board power supply is connected to the sensor of the current consumed by the system, and the current limiter is connected to the comparator, in addition, the torque sensor is mounted on the steering wheel and connected to the asynchronous motor via a gearbox.

Description of drawings (a)

Figure 1 presents a block diagram of a device for steering a vehicle with an electromechanical amplifier.

Utility Model Implementation

A device for steering a vehicle with an electromechanical amplifier, including an asynchronous motor reverse gear unit 6, a vehicle speed sensor 17, an actuator asynchronous motor control law driver 10, an on-board power supply 12, a current limiting controller 14, and a torque sensor 2 connected in series , control voltage generator 11, controlled master oscillator 9, three-phase integral pulse distributor 8, voltage regulator 7 on the windings of the actuator asynchronous motor, pulse-frequency modulator 16, comparator 15, actuator asynchronous motor 3, the shaft of which is connected to the steering mechanism 4 through gearbox 18.

A sensor 17 of the vehicle speed and shaper 10 of the control law of the executive asynchronous motor are connected to a controlled master oscillator 9.

A power three-phase transistor inverter 5, a voltage regulator 7 on the windings of the executive asynchronous motor, and a driver 11 of the control voltage are connected to the reverse unit 6 of the actuator of the asynchronous motor.

The on-board power source 12 is connected to the sensor 13 consumed by the current system.

The current limiting controller 14 is connected to the comparator 15, in addition, the torque sensor 2 is mounted on the steering wheel 1 and connected to the asynchronous actuator 3 through a gearbox 18 and a control voltage generator 11.

The claimed device operates as follows. When the steering wheel 1 is turned in one direction or another, the torque sensor 2 generates a signal corresponding to the angle of rotation. This signal is supplied to the control voltage generator 11, which includes a controlled master oscillator 9, the output signals of which control a three-phase integral pulse distributor 8, which, in turn, controls the voltage of the windings of the asynchronous actuator motor and the reverse unit of the asynchronous motor 6, controls power transistor keys of the inverter 5, supplying the stator windings of the executive asynchronous motor 3. The shaft of the executive asynchronous motor A 3 by acting on the swivel wheels of the vehicle via a reduction gear 18 and a steering mechanism 4 is rotated by a predetermined angle of the steering wheel 1 and stops.

When the steering wheel 1 is turned to the other side, the control voltage former 11 changes the logic of its output signal and, through the reverse unit 6 of the executive asynchronous motor, in the low-current part of the control system changes the control signals of the two power racks of the inverter 5, and, consequently, the executive asynchronous motor 3. The vehicle wheels return to their original position or turn them in the other direction.

Since the executive asynchronous motor 3 with direct control has a small starting torque, for its increase in the device for steering the vehicle with an electromechanical amplifier, a driver of control law 10 is introduced, which allows for the frequency starting of the executive asynchronous motor 3 and significantly increases its starting torque.

The sensor 13 consumed by the system current measures (frequency) the amount of current supplied from the on-board power supply 12 to the power three-phase transistor inverter 5. At low frequencies controlling the asynchronous motor 3, the sensor 13 consumed by the current system transmits the corresponding signal through the comparator 15 to the pulse frequency modulator 16 . In this case, the frequency-pulse modulator 16 generates and transmits to the voltage regulator 7 on the windings of the asynchronous actuator motor a command to reduce the voltage on the winding executive stator asynchronous motor 3.

A vehicle speed sensor 17 connected to a controlled master oscillator 9 is provided for controlling the rotation speed of the drive shaft of the asynchronous motor 3, and, therefore, for controlling the rotation speed of the vehicle wheels depending on its speed. The specified control speed of the wheels is as follows.

The signal of the vehicle speed sensor 17 is supplied to a controlled master oscillator 9, which turns it on or off. The output signals of the generator control a three-phase integral distributor of 8 pulses, which, in turn, controls the power transistor keys of the inverter 5, which feeds the stator windings of the executive asynchronous motor 3, through the voltage regulator 7 on the windings of the asynchronous actuator motor.

Claims (1)

A device for steering a vehicle with an electromechanical amplifier, including an asynchronous motor reverse gear unit (6), a vehicle speed sensor (17), a driver (10) of the executive asynchronous motor control law, an onboard power supply (12), a master (14) current limitations, as well as serially connected torque sensor (2), control voltage generator (11), controlled master oscillator (9), three-phase integral pulse distributor (8), regulate p (7) the voltage across the windings of the asynchronous actuator motor, a pulse-frequency modulator (16), a comparator (15), an asynchronous actuator motor (3), the shaft of which is connected through the gearbox (18) to the steering gear (4), while being controlled the driving generator (9) connects the vehicle speed sensor (17) and the driver (10) of the control law of the executive asynchronous motor, and a power three-phase transistor inverter (5), controller (7) are connected to the reverse asynchronous motor reverse unit (6) voltage on the windings of the asynchronous actuator motor and driver (11) of the control voltage, the on-board power supply (12) connected to the sensor (13) consumed by the current system, and the current limiter (14) connected to the comparator (15), in addition, the sensor ( 2) the moment is mounted on the steering wheel (1) and connected to the executive asynchronous motor (3) through the gearbox (18).