PSR Electrical Inertia Simulation Dyno Test Machine For Brake

 

Introduction

 

1. Applications:

The equipment is mainly used for performance test of the brake for light vehicles, cars and friction and wear performance test of disc brakes or drum brakes.

 

2. Principle:

Electrical inertia simulation dyno test machine consist of   brake test rig platform body,  industrial control computer monitoring DAC (Data Acquisition & Controlling) system, and DC speed control of electric drive systems, electrical control and test systems, hydraulic brake servo control system (Servo Control) , cooling and dust removal system.

 

 

Figure 1 the structure of Electrical inertia simulation dyno test machine

 

When brake performance testing, the brake is installed on the test stand, DC motor driven spindle rotation. When the speed reaches the simulation speed, the brake caliper begins to work through brake friction between the clamp and the friction disk, the brake braking torque to force the spindle to stop rotating, the measurement of the braking torque, brake deceleration and other parameters during braking. The inertia of the electric inertia systems use a fixed small flywheel and computer control motor to coupled simulate, namely the use of fixed small flywheel simulation part of the inertia can (mainly used to compensate for the motor at low speed control performance), the use of computer control motor to simulate the rest of the inertia (during the entire brake test, the fly wheel axle with the motor shaft disengaged).

Electrical inertia system is a core part of the dyno measurement and control system; the system use the power of inertia to the motor to simulate mechanical inertia, and the technology to achieve the dyno will produce the following effects:

(1) Reduce the structure and size of the dyno, to reduce its weight;

(2) Stepless adjustment of the simulated load inertia;

(3) Greatly improved the system function, improve loading accuracy and automation of the equipment;

(4) The theoretical basis and control system of electrical inertia, moment of inertia of the various test systems, the control method and system design have reference, such as the automotive bench test system, synchronization test dyno and vehicle drum  test system.

(5) The electrical inertia simulation machinery used to amount to only use a basis of customary amount of compensation low-speed segment of the speed control characteristics, can be carried inertia continuous simulation test; mechanical operation is convenient to avoid the customary amount of rounds of artificial assembly of the cumbersome, simple operation, convenient use and maintenance .

 Adopts OMRON encoder for speed detection, speed detection accuracy; application Z4 series Siemens technology DC motor, governor Eurotherm 590 + four-quadrant speed control, speed, stability, speed change is changing fast, you can achieve a rapid increase or decrease speed, accurate simulation of the inertia.

 Germany FESTO pneumatic proportional valve pressure control to adjust the pneumatic pressure through 1:20 pressurized cylinder conversion for brake fluid, brake, pressurized, fast relief, you can achieve linear rapid increase in pressure relief.

By the United States imports twist to resist sensor detects the friction, simple structure, high precision, and stable quality.

 

3. Test object:

 Load of 3.5 tons and light vehicles, mini trucks, car disc / drum brake assembly or brake pads.

 

4. Basic functions:

4.1 With all of the features of the inertial bench;

4.2 KRAUSS, all tests of the LINKING test machine function;

4.3 With constant torque (constant output) test functions;

4.4 With constant pressure (constant input) test function;

4.5 With the test function of the static moment (select items);

4.6 With the parking brake test function (select items);

4.7 Full computer control, testing, printing curve and reports;

4.8 The software can be fully compiled, executable, China, Europe, the United States, Japan and other test standards.

 

5. Executable standard:

 P-VW3211, P-VW3212, VW-TL110, SAE J212, JB 3980, JB 4200, JASO C406, ISO 11157, AK Master, AK1, AK2

 

6. The main technical parameters:

 Motor power: (DC) 165 KW, the armature current 395A; 1500/2400 r / min;

Spindle speed: 30 ~ 2400 r / min;

Permissible torque: inertia brake (max) 5,000 Nm; continuous drag friction 840 Nm

Static moment: (max) 2,500 N.m

Hand brake cars: 0 ~ 3,500 N Rally, stroke 50 mm;

Stages parts: brake disc / drum of the diameter < 400 mm, width F <500 mm;

                     The maximum axial load of 5000 N, the maximum radial load 40000 N;

Brake pressure: gas-liquid booster - constant voltage or constant torque to 180 bar

Pressure gradient: (max) 1200 bar / sec

Temperature measurement: room temperature ~ 800 ℃

Cooling System: blast volume: 2400 m3 / h (wind speed 30 m / s) (can be analog set)

Lead the air flow: 2800 m3 / h;

Speed control devices: (Model European 590 + four-quadrant) 440V; 500A

Computer systems: DELL P4 3.06G, 2G memory, 22 "color display, 1TB hard drive, 16X DVD drive

Color printers: HP (A4)

Dimensions:

Host: 4500 × 1500 × 2500 (mm) Weight: approximately 6,000 kg;