Aerospace and Electronic Systems Magazine September 2017 - 25

Zhu et al.
Table 1.

Model Parameters
Symbol

Value

Symbol

Value

Ap

2.26 × 10−3m2

pset

24 MPa

mt

150 kg

Ta

0.1 s

Bp

80 N/(m/s)

pb

0.5 MPa

fp

200 N

pe

0.5 MPa

FL

20 kN

ηpm

0.92

βe

690 MPa

T0

0.96 N * m

Cip

6.25 × 10−13m3/
(Pa * s)

p0

10 MPa

Cep

0

V0a

1 × 10−3m3

V0

4.52 × 10−5m3

Vs0

2 × 10−5m3

Cd

0.61

psmax

24 MPa

W

31.4 × 10 m

nmax

6,000 r/min

ρ

870 kg * m

ξp

0.9

−6

2

−3

ξs

0.8

ωnp

125.6 rad * s

ηpv

0.98

ωns

376.8 rad * s

Kp

2,500

p01

18 MPa

ymax

50 mm

V01a

1 × 10−4m3

Dp

3

2.5 × 10 m

Kp1

800

np

6,000 r/min

Dp1

0.625 ×
10−6m3

Δpset

1 MPa

−6

Figure 6.

Control performance comparison result (0.5 Hz square signal).

Figure 7.

Control performance comparison result (2 Hz sinusoidal signal).

QUAD REDUNDANT PBW SYSTEM MODELING
Since the quad redundant PBW system is composed of four, independent new PBW systems, the input and output flow rate of the
actuator are the sum of four subsystems. Therefore, the model of
a quad redundant PBW system can be established on the basis of
four new PBW subsystems by flow synthesis. In this model, the
displacement of pump Dp1 is a quarter of a pump used in other
models, and the proportional coefficient of controller Kp1 is also
different.

SIMULATION RESULTS
To prove the effectiveness of new the PBW TVC system, comparative simulation studies are carried out. The models of three PBW
systems and quad redundant PBW system have been established by
Amesim®. Model parameters used can be found in Table 1.

COMPARATIVE SIMULATION STUDY RESULTS
A 90-second-long test signal is designed to evaluate control performance and energy efficiency of three PBW systems. The frequenSEPTEMBER 2017

Figure 8.

Energy consumption comparison result.

cies of square signals are 0.2 Hz and 0.5 Hz, while the magnitudes
are ±0.05 m and ±0.03 m, respectively. The frequencies of sinusoidal signals are 0.5 Hz, 2 Hz, and 5 Hz, while the magnitudes are
±0.04 m, ±0.02 m, and ±0.02 m.
According to tracking performance results as shown in Figures
6 and 7, it is easy to find that the control performance of a pump
control PBW system is the worst, and the steady state error is large
for its low control stiffness. The control performance of a new
PBW system is slightly worse than a valve control PBW system;
however, it is far better than a pump control PBW system.
Figure 8 shows the energy consumption of three PBW systems.
The pump control system has the best efficiency, and the new PBW

IEEE A&E SYSTEMS MAGAZINE

25



Table of Contents for the Digital Edition of Aerospace and Electronic Systems Magazine September 2017

No label
Aerospace and Electronic Systems Magazine September 2017 - No label
Aerospace and Electronic Systems Magazine September 2017 - Cover2
Aerospace and Electronic Systems Magazine September 2017 - 1
Aerospace and Electronic Systems Magazine September 2017 - 2
Aerospace and Electronic Systems Magazine September 2017 - 3
Aerospace and Electronic Systems Magazine September 2017 - 4
Aerospace and Electronic Systems Magazine September 2017 - 5
Aerospace and Electronic Systems Magazine September 2017 - 6
Aerospace and Electronic Systems Magazine September 2017 - 7
Aerospace and Electronic Systems Magazine September 2017 - 8
Aerospace and Electronic Systems Magazine September 2017 - 9
Aerospace and Electronic Systems Magazine September 2017 - 10
Aerospace and Electronic Systems Magazine September 2017 - 11
Aerospace and Electronic Systems Magazine September 2017 - 12
Aerospace and Electronic Systems Magazine September 2017 - 13
Aerospace and Electronic Systems Magazine September 2017 - 14
Aerospace and Electronic Systems Magazine September 2017 - 15
Aerospace and Electronic Systems Magazine September 2017 - 16
Aerospace and Electronic Systems Magazine September 2017 - 17
Aerospace and Electronic Systems Magazine September 2017 - 18
Aerospace and Electronic Systems Magazine September 2017 - 19
Aerospace and Electronic Systems Magazine September 2017 - 20
Aerospace and Electronic Systems Magazine September 2017 - 21
Aerospace and Electronic Systems Magazine September 2017 - 22
Aerospace and Electronic Systems Magazine September 2017 - 23
Aerospace and Electronic Systems Magazine September 2017 - 24
Aerospace and Electronic Systems Magazine September 2017 - 25
Aerospace and Electronic Systems Magazine September 2017 - 26
Aerospace and Electronic Systems Magazine September 2017 - 27
Aerospace and Electronic Systems Magazine September 2017 - 28
Aerospace and Electronic Systems Magazine September 2017 - 29
Aerospace and Electronic Systems Magazine September 2017 - 30
Aerospace and Electronic Systems Magazine September 2017 - 31
Aerospace and Electronic Systems Magazine September 2017 - 32
Aerospace and Electronic Systems Magazine September 2017 - 33
Aerospace and Electronic Systems Magazine September 2017 - 34
Aerospace and Electronic Systems Magazine September 2017 - 35
Aerospace and Electronic Systems Magazine September 2017 - 36
Aerospace and Electronic Systems Magazine September 2017 - 37
Aerospace and Electronic Systems Magazine September 2017 - 38
Aerospace and Electronic Systems Magazine September 2017 - 39
Aerospace and Electronic Systems Magazine September 2017 - 40
Aerospace and Electronic Systems Magazine September 2017 - 41
Aerospace and Electronic Systems Magazine September 2017 - 42
Aerospace and Electronic Systems Magazine September 2017 - 43
Aerospace and Electronic Systems Magazine September 2017 - 44
Aerospace and Electronic Systems Magazine September 2017 - 45
Aerospace and Electronic Systems Magazine September 2017 - 46
Aerospace and Electronic Systems Magazine September 2017 - 47
Aerospace and Electronic Systems Magazine September 2017 - 48
Aerospace and Electronic Systems Magazine September 2017 - 49
Aerospace and Electronic Systems Magazine September 2017 - 50
Aerospace and Electronic Systems Magazine September 2017 - 51
Aerospace and Electronic Systems Magazine September 2017 - 52
Aerospace and Electronic Systems Magazine September 2017 - 53
Aerospace and Electronic Systems Magazine September 2017 - 54
Aerospace and Electronic Systems Magazine September 2017 - 55
Aerospace and Electronic Systems Magazine September 2017 - 56
Aerospace and Electronic Systems Magazine September 2017 - 57
Aerospace and Electronic Systems Magazine September 2017 - 58
Aerospace and Electronic Systems Magazine September 2017 - 59
Aerospace and Electronic Systems Magazine September 2017 - 60
Aerospace and Electronic Systems Magazine September 2017 - 61
Aerospace and Electronic Systems Magazine September 2017 - 62
Aerospace and Electronic Systems Magazine September 2017 - 63
Aerospace and Electronic Systems Magazine September 2017 - 64
Aerospace and Electronic Systems Magazine September 2017 - Cover3
Aerospace and Electronic Systems Magazine September 2017 - Cover4
http://www.brightcopy.net/allen/aesm/34-2s
http://www.brightcopy.net/allen/aesm/34-2
http://www.brightcopy.net/allen/aesm/34-1
http://www.brightcopy.net/allen/aesm/33-12
http://www.brightcopy.net/allen/aesm/33-11
http://www.brightcopy.net/allen/aesm/33-10
http://www.brightcopy.net/allen/aesm/33-09
http://www.brightcopy.net/allen/aesm/33-8
http://www.brightcopy.net/allen/aesm/33-7
http://www.brightcopy.net/allen/aesm/33-5
http://www.brightcopy.net/allen/aesm/33-4
http://www.brightcopy.net/allen/aesm/33-3
http://www.brightcopy.net/allen/aesm/33-2
http://www.brightcopy.net/allen/aesm/33-1
http://www.brightcopy.net/allen/aesm/32-10
http://www.brightcopy.net/allen/aesm/32-12
http://www.brightcopy.net/allen/aesm/32-9
http://www.brightcopy.net/allen/aesm/32-11
http://www.brightcopy.net/allen/aesm/32-8
http://www.brightcopy.net/allen/aesm/32-7s
http://www.brightcopy.net/allen/aesm/32-7
http://www.brightcopy.net/allen/aesm/32-6
http://www.brightcopy.net/allen/aesm/32-5
http://www.brightcopy.net/allen/aesm/32-4
http://www.brightcopy.net/allen/aesm/32-3
http://www.brightcopy.net/allen/aesm/32-2
http://www.brightcopy.net/allen/aesm/32-1
http://www.brightcopy.net/allen/aesm/31-12
http://www.brightcopy.net/allen/aesm/31-11s
http://www.brightcopy.net/allen/aesm/31-11
http://www.brightcopy.net/allen/aesm/31-10
http://www.brightcopy.net/allen/aesm/31-9
http://www.brightcopy.net/allen/aesm/31-8
http://www.brightcopy.net/allen/aesm/31-7
https://www.nxtbookmedia.com