Temperature compensation method and device for continuous damping adjustable shock absorber, vehicle and storage medium

Abstract

The invention provides a temperature compensation method and device for a continuous damping adjustable shock absorber, a vehicle and a storage medium, and the method comprises the following steps: determining a current compensation value based on the real-time oil temperature of the continuous damping adjustable shock absorber; and according to the current compensation value and the current basic value, the working current of an electromagnetic valve in the continuous damping adjustable shock absorber is controlled so as to control the damping force of the continuous damping adjustable shock absorber. The oil temperature of the continuous damping adjustable shock absorber is effectively compensated, and accurate control over the damping force of the shock absorber by the electromagnetic valve is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of automobile technology, and in particular relates to a temperature compensation method, a device, a vehicle and a storage medium for a continuously damping adjustable shock absorber. Background Art

[0002] With the development of automobile technology, people's requirements for automobile comfort and operability are getting higher and higher. The development of suspension system has experienced the transition from passive adjustment to active adjustment, and the combination of coil spring + shock absorber has been upgraded to the combination of air spring + CDC shock absorber. CDC shock absorber has gradually become an optional or even standard configuration for mid-to-high-end smart electric vehicles. The electronic control unit receives and processes the signals collected by the body acceleration sensor and wheel sensor, controls the solenoid valve on the CDC shock absorber to change the size of the shock absorber pore, thereby changing the shock absorber damping force, and responds to road conditions and driving conditions in real time.

[0003] CDC shock absorber (continuous damping adjustable shock absorber) consists of two parts: shock absorber body and solenoid valve. Similar to the conventional shock absorber body, the shock absorber body also includes two valve systems, piston valve (restoration valve + circulation valve) and bottom valve (compression valve + compensation valve) with valve plate structure. The difference is that it consists of three annular cylinders, namely outer cylinder, middle cylinder and inner cylinder. The three annular cylinders, piston valve and bottom valve cooperate to divide the inside of the shock absorber into three chambers: restoration chamber, compression chamber and compensation chamber. Among them, the oil in the restoration chamber can flow freely into the annular gap formed between the middle cylinder and the inner cylinder through the hole at the upper end of the inner cylinder, and directly connect with the inlet of the damping regulating valve. The outlet end of the damping regulating valve is connected with the compensation chamber through the oil channel. The compensation chamber mainly refers to the lower end of the bottom valve and the annular gap between the middle cylinder and the outer cylinder.

[0004] The specific working process of CDC shock absorber is as follows: when in the recovery stroke, the piston rod moves upward relative to the shock absorber cylinder, the oil pressure in the recovery chamber rises, and the oil is squeezed out in two ways, one way enters the compression chamber through the recovery valve on the piston, and the other way flows into the damping regulating valve through the flow hole and then enters the compensation chamber; the oil in the compensation chamber will enter the compression chamber through the compensation flow channel on the bottom valve under the action of the pressure difference; when in the compression stroke, the oil in the compression chamber is also squeezed out in two ways, one way flows into the compensation chamber through the compression valve, and the other way enters the recovery chamber through the flow valve, and further flows through the damping regulating valve and returns to the compensation chamber. It can be seen that whether it is the recovery stroke or the compression stroke, the damping regulating valve will participate in the damping adjustment process of the shock absorber to achieve comfort adjustment under the two working conditions of wheel jumping up or down.

[0005] Since the CDC shock absorber is controlled by solenoid valves based on ordinary shock absorbers, the oil in ordinary shock absorbers will change greatly with the temperature change every year. Especially with the seasonal temperature changes in the north and south, and the increase in oil temperature when the shock absorber works for a long time. The shock absorber's damping force changes greatly due to the change in oil viscosity, which in turn affects the solenoid valve's precise control of the shock absorber's damping force, and thus affects the vehicle's handling and comfort performance. Generally speaking, the shock absorber oil viscosity will decrease with the increase in shock absorber temperature. When the temperature change causes the oil viscosity to change, it will greatly affect the damping force. This temperature change includes changes in ambient temperature and the temperature rise caused by the shock absorber itself when it is working. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the above-mentioned background technology and to provide a temperature compensation method, device, vehicle and storage medium for a continuously damping adjustable shock absorber, which can effectively compensate for the oil temperature of the continuously damping adjustable shock absorber and ensure the precise control of the solenoid valve on the damping force of the shock absorber.

[0007] The technical solution adopted by the present invention is: a temperature compensation method for a continuously damping adjustable shock absorber, comprising the following steps:

[0008] Determine the current compensation value based on the real-time oil temperature of the continuously damping adjustable shock absorber;

[0009] The working current of the electromagnetic valve in the continuous damping adjustable shock absorber is controlled according to the current compensation value and the current basic value to control the damping force of the continuous damping adjustable shock absorber.

[0010] In the above technical solution, a temperature sensor is used to collect the real-time oil temperature of the continuously damping adjustable shock absorber.

[0011] In the above technical solution, the temperature sensor is arranged on the inner cylinder of the continuously damping adjustable shock absorber.

[0012] In the above technical solution, the temperature sensor is a thermocouple or a thermal resistor.

[0013] In the above technical solution, the signal end of the temperature sensor is electrically connected to the input end of the controller for controlling the working current of the solenoid valve through a wire; the wire is led out through the main valve core and the pilot valve core of the solenoid valve and is electrically connected to the controller.

[0014] In the above technical solution, the process of controlling the working current of the solenoid valve in the continuously damping adjustable shock absorber according to the current compensation value and the current base value includes: adding the current compensation value and the current base value as the working current value of the solenoid valve in the continuously damping adjustable shock absorber.

[0015] In the above technical solution, the process of determining the current compensation value based on the real-time oil temperature of the continuously damping adjustable shock absorber includes: determining the temperature range to which the real-time oil temperature of the continuously damping adjustable shock absorber belongs, and locating the corresponding current compensation value according to the temperature range as the current current compensation value of the continuously damping adjustable shock absorber.

[0016] The above technical solution also includes determining the one-to-one correspondence between the oil temperature range and the current compensation value of the continuously damping adjustable shock absorber through experiments.

[0017] In the above technical solution, the process of experimentally determining the one-to-one correspondence between the oil temperature range and the current compensation value of the continuously damping adjustable shock absorber includes:

[0018] Determine an ideal operating temperature range of the continuously damped adjustable shock absorber based on its type, place the continuously damped adjustable shock absorber in a laboratory within the ideal operating temperature range, measure the operating current of the solenoid valve when the continuously damped adjustable shock absorber is working normally as a reference current value, and measure the damping force output by the solenoid valve when the continuously damped adjustable shock absorber is working normally as a reference damping force;

[0019] The continuously damping adjustable shock absorber was placed in laboratories in different temperature ranges, and the working current value of the solenoid valve when the solenoid valve outputs the reference damping force when the continuously damping adjustable shock absorber is working normally was measured. The difference between the working current value and the reference current value was used as the current compensation value in the corresponding temperature range.

[0020] The present invention provides a temperature compensation device for a continuously damping adjustable shock absorber, which is used in the temperature compensation method for the continuously damping adjustable shock absorber described in the above technical solution, and comprises: a continuously damping adjustable shock absorber, a temperature sensor and a controller;

[0021] Among them, the temperature sensor is used to detect the real-time oil temperature of the adjustable damping shock absorber in real time, and send the detection result to the controller;

[0022] The controller is used to determine a current compensation value based on the real-time oil temperature of the continuously damping adjustable shock absorber; and to control the working current of the solenoid valve in the continuously damping adjustable shock absorber according to the current compensation value and the current base value, so as to control the damping force of the continuously damping adjustable shock absorber.

[0023] The present invention also provides a vehicle, comprising:

[0024] one or more processors;

[0025] A memory for storing one or more programs;

[0026] When the one or more programs are executed by the one or more processors, the one or more processors implement the temperature compensation method of the continuously damping adjustable shock absorber described in the above technical solution.

[0027] The present invention also provides a computer-readable storage medium having a computer program stored thereon, characterized in that when the program is executed by a processor, the temperature compensation method for the continuously damping adjustable shock absorber as described in the above technical solution is implemented.

[0028] The beneficial effects of the present invention are as follows: the present invention has a simple structure, a small volume, and does not affect the original CDC shock absorber structure layout. The present invention can use the original control mechanism (controller, storage) of the CDC shock absorber to complete the temperature compensation, does not need to repeatedly add the control mechanism, and has low cost. The present invention can enable the vehicle to achieve the expected vibration reduction effect under different use environments (mainly temperature), thereby improving comfort and controllability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the method flow of the present invention;

[0030] Figure 2 It is a schematic diagram of the device structure of the present invention.

[0031] Among them, 1-a solenoid valve of the continuous damping adjustable shock absorber, 2-a wire, 3-a temperature sensor, 4-a body end of the continuous damping adjustable shock absorber, 5-a wheel end of the continuous damping adjustable shock absorber, and 6-an inner cylinder of the continuous damping adjustable shock absorber. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not constitute a limitation on the present invention.

[0033] Example 1

[0034] like Figure 1 As shown, the present invention provides a temperature compensation method for a continuously damping adjustable shock absorber, comprising the following steps:

[0035] Determine the current compensation value based on the real-time oil temperature of the continuously damping adjustable shock absorber;

[0036] The working current of the electromagnetic valve 1 in the continuous damping adjustable shock absorber is controlled according to the current compensation value and the current basic value to control the damping force of the continuous damping adjustable shock absorber.

[0037] Specifically, the temperature sensor 3 is used to collect the real-time oil temperature of the continuously damped adjustable shock absorber. The present invention can obtain the oil temperature of the continuously damped adjustable shock absorber in real time and accurately through the temperature sensor 3, so as to timely compensate the output damping of the solenoid valve 1. Since the temperature sensor 3 can directly read the shock absorber oil temperature, this method can realize closed-loop control of the temperature.

[0038] Specifically, the temperature sensor 3 is arranged on the inner cylinder 6 of the continuously adjustable damping shock absorber. The arrangement position of the temperature sensor 3 of the present invention can ensure effective monitoring of the oil temperature without affecting the normal operation of the continuously adjustable damping shock absorber.

[0039] Specifically, the temperature sensor 3 uses a thermocouple or a thermal resistor to ensure that the oil temperature information can be accurately collected.

[0040] Specifically, the signal end of the temperature sensor 3 is electrically connected to the input end of the controller for controlling the working current of the solenoid valve 1 through the wire 2; the wire 2 is led out through the main valve core and the pilot valve core of the solenoid valve 1 and electrically connected to the controller. The temperature sensor 3 of the present invention is electrically connected to the controller through the wire 2 to ensure the effectiveness of information transmission without affecting other information transmission paths in the vehicle. At the same time, the lead-out path of the wire 2 of the present invention can ensure the effective transmission of the oil temperature signal without affecting the normal operation of the continuously damping adjustable shock absorber.

[0041] Specifically, the process of controlling the working current of the solenoid valve 1 in the continuous damping adjustable shock absorber according to the current compensation value and the current base value includes: adding the current compensation value and the current base value as the working current value of the solenoid valve 1 in the continuous damping adjustable shock absorber. The calculation model is simple and efficient, which ensures the control accuracy while effectively saving the calculation cost.

[0042] Specifically, the process of determining the current compensation value based on the real-time oil temperature of the continuously damping adjustable shock absorber includes: determining the temperature range to which the real-time oil temperature of the continuously damping adjustable shock absorber belongs, and locating the corresponding current compensation value according to the temperature range as the current current compensation value of the continuously damping adjustable shock absorber. The calculation model is simple and efficient, which ensures control accuracy while effectively saving calculation costs.

[0043] Preferably, the temperature compensation method of the continuously damping adjustable shock absorber specifically comprises the following steps:

[0044] Set the shock absorber basic operating temperature range a0. When the temperature is in this range, no compensation is performed. At this time, the basic current value output by the controller to the solenoid valve 1 is b0.

[0045] When in the temperature range a1, the controller compensates the basic current value b0, the compensation value is b1, and outputs a control instruction to the solenoid valve 1 to adjust the working current of the solenoid valve 1 to b0+b1.

[0046] When in the temperature range a2, the controller compensates the basic current value b0, the compensation value is b2, and outputs a control instruction to the solenoid valve 1, so that the working current of the solenoid valve 1 is adjusted to b0+b2.

[0047] When in the temperature range a3, the controller compensates the basic current value b0, the compensation value is b3, and outputs a control instruction to the solenoid valve 1 to adjust the working current of the solenoid valve 1 to b0+b3.

[0048] By analogy, this temperature range is subdivided according to vehicle positioning and actual product needs.

[0049] Specifically, it also includes determining the one-to-one correspondence between the oil temperature range and the current compensation value of the continuously damping adjustable shock absorber through experiments, and storing the mapping relationship in the storage medium of the controller, so that the controller can directly call the matching program, determine the current compensation value through the oil temperature range, and timely control the working current of the solenoid valve 1.

[0050] Preferably, the process of experimentally determining the one-to-one correspondence between the oil temperature range and the current compensation value of the continuously damping adjustable shock absorber includes:

[0051] Determine an ideal working temperature range of the continuously damped adjustable shock absorber based on its type, place the continuously damped adjustable shock absorber in a laboratory in the ideal working temperature range, measure the working current of the solenoid valve 1 when the continuously damped adjustable shock absorber works normally as a reference current value, and measure the damping force output by the solenoid valve 1 when the continuously damped adjustable shock absorber works normally as a reference damping force;

[0052] The continuously damping adjustable shock absorber is placed in laboratories in different temperature ranges respectively, and the working current value of the solenoid valve 1 when the solenoid valve 1 outputs the reference damping force when the continuously damping adjustable shock absorber is working normally is measured. The difference between the working current value and the reference current value is used as the current compensation value in the corresponding temperature range.

[0053] The present invention clarifies the relationship between temperature and damping force change through experiments, and establishes a mapping model between temperature and solenoid valve 1 working current according to the relationship between solenoid valve 1 working current and damping force, obtains the compensation current value required for temperature change, and stores this temperature and current parameter relationship in the storage medium of the controller, so as to facilitate direct program use during the subsequent method execution. Through this method, the vehicle can achieve the expected vibration reduction effect in different use environments, thereby improving comfort and controllability.

[0054] Example 2

[0055] The present invention provides a temperature compensation device for a continuously damped adjustable shock absorber, which is used in the temperature compensation method for the continuously damped adjustable shock absorber described in the above technical solution, comprising: a continuously damped adjustable shock absorber, a temperature sensor 3 and a controller;

[0056] The temperature sensor 3 is used to detect the real-time oil temperature of the adjustable damping shock absorber in real time, and send the detection result to the controller;

[0057] The controller is used to determine a current compensation value based on the real-time oil temperature of the continuously damping adjustable shock absorber; and to control the working current of the solenoid valve 1 in the continuously damping adjustable shock absorber according to the current compensation value and the current base value, so as to control the damping force of the continuously damping adjustable shock absorber.

[0058] Specifically, the temperature sensor 3 is arranged on the inner cylinder 6 of the continuously adjustable damping shock absorber. The arrangement position of the temperature sensor 3 of the present invention can ensure effective monitoring of the oil temperature without affecting the normal operation of the continuously adjustable damping shock absorber.

[0059] Specifically, the temperature sensor 3 uses a thermocouple or a thermal resistor to ensure that the oil temperature information can be accurately collected.

[0060] Specifically, the signal end of the temperature sensor 3 is electrically connected to the input end of the controller for controlling the working current of the solenoid valve 1 through the wire 2; the wire 2 is led out through the main valve core and the pilot valve core of the solenoid valve 1 and electrically connected to the controller. The temperature sensor 3 of the present invention is electrically connected to the controller through the wire 2 to ensure the effectiveness of information transmission without affecting other information transmission paths in the vehicle. At the same time, the lead-out path of the wire 2 of the present invention can ensure the effective transmission of the oil temperature signal without affecting the normal operation of the continuously damping adjustable shock absorber.

[0061] The present invention determines the one-to-one correspondence between the oil temperature range and the current compensation value of the continuous damping adjustable shock absorber through experiments before assembling the device, and stores the mapping relationship in the storage medium of the controller, so that the controller can directly call the matching program, determine the current compensation value through the oil temperature range, and timely control the working current of the solenoid valve 1.

[0062] Specifically, the process of the controller determining the current compensation value based on the real-time oil temperature of the continuously damping adjustable shock absorber includes: determining the temperature range to which the real-time oil temperature of the continuously damping adjustable shock absorber belongs, locating the corresponding current compensation value according to the temperature range as the current current compensation value of the continuously damping adjustable shock absorber, and adding the current compensation value and the current basic value as the working current value of the solenoid valve 1 in the continuously damping adjustable shock absorber. The calculation model is simple and efficient, which ensures control accuracy while effectively saving calculation costs.

[0063] Example 3

[0064] like Figure 2 As shown, the present invention also provides a vehicle, the vehicle comprising:

[0065] one or more processors;

[0066] A memory for storing one or more programs;

[0067] When the one or more programs are executed by the one or more processors, the one or more processors implement the temperature compensation method of the continuously damping adjustable shock absorber described in the above technical solution.

[0068] Example 4

[0069] The present invention also provides a computer-readable storage medium having a computer program stored thereon, characterized in that when the program is executed by a processor, the temperature compensation method for the continuously damping adjustable shock absorber as described in the above technical solution is implemented.

[0070] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A temperature compensation method for a continuously damping adjustable shock absorber, characterized in that: The following steps are involved: Determine the current compensation value based on the real-time oil temperature of the continuously damping adjustable shock absorber; The working current of the electromagnetic valve in the continuous damping adjustable shock absorber is controlled according to the current compensation value and the current basic value to control the damping force of the continuous damping adjustable shock absorber.

2. The temperature compensation method of a continuously damping adjustable shock absorber according to claim 1, characterized in that: A temperature sensor is used to collect the real-time oil temperature of the continuously damping adjustable shock absorber.

3. The temperature compensation method of the continuously damping adjustable shock absorber according to claim 2, characterized in that: The temperature sensor is arranged on the inner cylinder of the continuously damping adjustable shock absorber.

4. The temperature compensation method of a continuously damping adjustable shock absorber according to claim 3, characterized in that: The temperature sensor is a thermocouple or a thermal resistor.

5. The temperature compensation method of a continuously damping adjustable shock absorber according to claim 4, characterized in that: The signal end of the temperature sensor is electrically connected to the input end of a controller for controlling the working current of the solenoid valve through a wire; the wire is led out through the main valve core and the pilot valve core of the solenoid valve and is electrically connected to the controller.

6. The temperature compensation method of a continuously adjustable damping shock absorber according to claim 1, characterized in that: The process of controlling the working current of the electromagnetic valve in the continuous damping adjustable shock absorber according to the current compensation value and the current base value includes: adding the current compensation value and the current base value as the working current value of the electromagnetic valve in the continuous damping adjustable shock absorber.

7. The temperature compensation method of a continuously damping adjustable shock absorber according to claim 4, characterized in that: The process of determining the current compensation value based on the real-time oil temperature of the continuously damping adjustable shock absorber includes: determining the temperature range to which the real-time oil temperature of the continuously damping adjustable shock absorber belongs, and locating the corresponding current compensation value according to the temperature range as the current current compensation value of the continuously damping adjustable shock absorber.

8. The temperature compensation method of a continuously damping adjustable shock absorber according to claim 6, characterized in that: It also includes determining the one-to-one correspondence between the oil temperature range and the current compensation value of the continuously damping adjustable shock absorber through experiments.

9. The temperature compensation method of a continuously adjustable damping shock absorber according to claim 6, characterized in that: The process of experimentally determining the one-to-one correspondence between the oil temperature range and the current compensation value of the continuously damped adjustable shock absorber includes: Determine an ideal operating temperature range of the continuously damped adjustable shock absorber based on its type, place the continuously damped adjustable shock absorber in a laboratory within the ideal operating temperature range, measure the operating current of the solenoid valve when the continuously damped adjustable shock absorber is working normally as a reference current value, and measure the damping force output by the solenoid valve when the continuously damped adjustable shock absorber is working normally as a reference damping force; The continuously damping adjustable shock absorber was placed in laboratories in different temperature ranges, and the working current value of the solenoid valve when the solenoid valve outputs the reference damping force when the continuously damping adjustable shock absorber is working normally was measured. The difference between the working current value and the reference current value was used as the current compensation value in the corresponding temperature range.

10. A temperature compensation device for a continuously damping adjustable shock absorber, characterized in that: A temperature compensation method for a continuously damping adjustable shock absorber according to any one of claims 1 to 9, comprising: a continuously damping adjustable shock absorber, a temperature sensor and a controller; Among them, the temperature sensor is used to detect the real-time oil temperature of the adjustable damping shock absorber in real time, and send the detection result to the controller; The controller is used to determine a current compensation value based on the real-time oil temperature of the continuously damping adjustable shock absorber; and to control the working current of the solenoid valve in the continuously damping adjustable shock absorber according to the current compensation value and the current base value, so as to control the damping force of the continuously damping adjustable shock absorber.

11. A vehicle, characterized in that: The vehicle comprises: one or more processors; A memory for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the temperature compensation method for the continuously damping adjustable shock absorber according to any one of claims 1 to 9.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the temperature compensation method for a continuously damping adjustable shock absorber according to any one of claims 1 to 9 is implemented.

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